With Electronic Or Magnetic Control Patents (Class 267/140.15)
  • Patent number: 10644629
    Abstract: The present invention relates to a fan motor driving circuit, a driving method, and a cooling device and an electronic machine using the same. The present invention provides a motor driving circuit capable of suppressing strain on coil current and/or reducing noise. A control circuit a control circuit switches an output phase of an H-bridge circuit based on a Hall signal, and in a soft switching duration (Tss) that starts before and ends after the output-phase switching, slowly varies a duty ratio (DUTY1) of an output voltage (VOUT1) of one leg of the H-bridge circuit over time, and meanwhile, varies a duty ratio (DUTY2) of an output voltage (VOUT2) of another leg of the H-bridge circuit in an opposite direction with respect to the duty ratio (DUTY1) of the output voltage (VOUT1) of the one leg.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: May 5, 2020
    Assignee: ROHM CO., LTD.
    Inventors: Joji Noie, Tomofumi Mishima, Yuki Gohara
  • Patent number: 10487906
    Abstract: Motion-damping systems and methods that include motion-damping systems are disclosed herein. The motion-damping systems are configured to damp relative motion between a base structure and an attached component that define a gap therebetween. The systems include an at least substantially rigid tubular structure that defines an internal volume and extends within the gap. The systems also include a magnetic assembly and a magnetically active body. One of the magnetic assembly and the magnetically active body is located within the tubular structure and the other of the magnetic assembly and the magnetically active body is operatively attached to a selected one of the base structure and the attached component. The magnetic assembly is in magnetic communication with the magnetically active body such that a magnetic interaction therebetween resists motion of the attached component relative to the base structure. The methods include dissipating energy with the motion-damping system.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 26, 2019
    Assignee: The Boeing Company
    Inventors: John Ralph Hull, Michael Strasik, Thomas H. Martig
  • Patent number: 10125842
    Abstract: A mount assembly for vibration isolation or an engine includes a housing having first and second fluid chambers that are selectively connected through an elongated, first path, and a shorter, second path. A decoupler is received in the housing, and an inductive sensor assembly senses a position of the decoupler. An associated method of inductively sensing a decoupler position to improve switchable mount performance is provided. Metallic particles or a metal inserts are provided in the decoupler to cooperate with an induction coil mounted adjacent the decoupler.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 13, 2018
    Assignee: COOPER-STANDARD AUTOMOTIVE INC.
    Inventors: William B. McDonough, Jay Lucas, Wayne Jordan, Joe Mihalic
  • Patent number: 9802688
    Abstract: A system comprises an elastic mount configured to support a propulsion device with respect to a marine vessel. The elastic mount contains an electromagnetic fluid. An electromagnet is configured so that increasing an amount of electricity applied to the electromagnet increases the shear strength of the electromagnetic fluid in the elastic mount and thereby decreases elasticity of the elastic mount, and so that decreasing the amount of electricity applied to the electromagnet decreases the shear strength of the electromagnetic fluid in the elastic mount and thereby increases the elasticity of the elastic mount. A controller automatically adapts the amount of electricity applied to the electromagnet during translation of the marine vessel so as to reduce the likelihood that the propulsion device impacts an adjacent structure on the marine.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: October 31, 2017
    Assignee: Brunswick Corporation
    Inventors: Andrew Tuchscherer, Jeffrey C. Etapa
  • Patent number: 9509204
    Abstract: Motion-damping systems and methods that include motion-damping systems are disclosed herein. The motion-damping systems include a flexible body that is configured to extend within a gap that is defined between a base structure and an attached component. The motion-damping systems further include a magnetic assembly and a ferromagnetic body. One of the magnetic assembly and the ferromagnetic body is located within the flexible body and the other of the magnetic assembly and the ferromagnetic body is operatively affixed to a selected one of the base structure and the attached component. The magnetic assembly and the ferromagnetic body are oriented such that a magnetic force therebetween retains the flexible body in physical contact with the selected one of the base structure and the attached component. The methods include methods of installing and/or operating the motion-dampening systems.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: November 29, 2016
    Assignee: The Boeing Company
    Inventors: John Ralph Hull, Michael Strasik, Thomas H. Martig
  • Patent number: 9016674
    Abstract: Disclosed herein is an active mount including a housing surrounding components within the active mount and providing and outer surface, and a core disposed at an inside upper portion of the housing inside having an upper portion protruding outward from the housing. Additionally, an insulator is connected to a lower portion of the core and extends radially outward. An actuating mechanism is disposed at a predetermined distance from a lower portion of the insulator and includes a vertically movable center. A driving unit is disposed horizontally outside of the actuating mechanism and is configured to apply a force for vertically moving the center of the actuating mechanism.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: April 28, 2015
    Assignee: Hyundai Motor Company
    Inventors: Seung Won Kim, Jang Ho Kim, Yong Jin Kim, Dong Wook Lee
  • Patent number: 8998187
    Abstract: A two vacuum actuated switch mechanism is provided within an engine or hydromount. First and second ports are provided along a peripheral portion of an inertia track assembly. A decoupler or vacuum diaphragm is selectively exposed to vacuum through a first port. Under the influence of the vacuum, the decoupler can no longer oscillate. If vacuum is applied only to the decoupler, and not and idle diaphragm, the fluid is forced through a low frequency inertia track which creates high levels of damping and low frequencies. If vacuum is also applied to the decoupler and the idle diaphragm, the high frequency inertia track is opened and causes the fluid to flow therethrough. This creates a high frequency dynamic rate dip. Alternatively, if no vacuum is applied to either the decoupler or the idle diaphragm, the decoupler is allowed to freely oscillate creating a decoupled state for low input displacements. Higher input displacements results in fluids being forced through the low frequency inertia track.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: April 7, 2015
    Assignee: Cooper-Standard Automotive Inc.
    Inventors: Jeff Bradshaw, Andrew Hartgers
  • Patent number: 8960390
    Abstract: Provided is a vehicle-mounted active vibration reducing device wherein vibrations in a plurality of directions are reduced by a single dynamic damper. Since an actuator is attached so as to be supported by an elastic member attached to a bracket, the actuator can be used as a mass of a dynamic damper. The moving directions of the actuator are the forward and rearward directions, and are different from the moving directions of the dynamic damper using the actuator as a mass, i.e., the upward and downward directions. Accordingly, vibrations can be controlled in the forward and rearward directions which correspond to the moving directions of the actuator as well as the upward and downward directions which correspond to the moving directions of the dynamic damper.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: February 24, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yasunori Kobayashi, Toshio Inoue
  • Publication number: 20150001773
    Abstract: The reference signal generating unit corrects the simulated vibration transmission characteristic from the offset vibration generating unit to the acceleration sensor using one of the correction tables switched corresponding to the static torque of the engine estimated by the static torque estimating unit out of the stored content of the correction table storing unit to generate control signals. The vibration transmitted from the engine to the side of the vehicle body can be surely reduced by offset vibration generated by the control signals at the offset vibration generating unit even in an essentially rigidly supporting status.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 1, 2015
    Inventor: Toshio Inoue
  • Patent number: 8844914
    Abstract: Disclosed is a variable differential mount apparatus using a Magnetorheological Elastomer (MRE). The apparatus includes a core, a coil, a plurality of MRE supports, and a magnetic path formation member. The core has a plurality of arms disposed thereon. The coil is wound on the plurality of arms, respectively. The plurality of MRE supports are disposed to face the plurality of arms, respectively. The magnetic path formation member is disposed outside the plurality of MRE supports. More specifically, a current is applied to coil to vary the degree of stiffness of the variable differential mount based on a particular driving condition to allow for increased handling and comfort.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: September 30, 2014
    Assignees: Hyundai Motor Company, IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Min Soo Kim, Kyung Mo Yang, Seong Hoon Lee, Ji Hyun Yoon, Un Chang Jeong, In Hyung Yang, Jae Eung Oh
  • Patent number: 8807543
    Abstract: A bearing body (2) is divided in the radial direction (r) by at least one insert (6) arranged in the bearing body (2) parallel to the bearing axis (12) into at least two spring packets (7, 8) having an outer switching packet (8). Each of the working chambers (4, 4?) is divided into several chamber sections (91-9n) extending in the radial direction (r) and into at least one chamber section (10) extending in the axial direction (a) and connecting the chamber sections (91-9n) with one another. The elastomeric bearing body (2) is segmented in the switching packet (8) in the axial direction (a) by the chamber sections (91-9n) protruding into the elastomeric bearing body (2).
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: August 19, 2014
    Assignee: Audi AG
    Inventors: Stefan Loheide, Hubert Siemer, Thomas Conrad
  • Publication number: 20140220545
    Abstract: Active vibration isolation (AVVI) systems are becoming more available in various markets, one such market being vehicle operator seating. Unfamiliarity with the performance of such systems may cause users initial perceptions of system performance to be unfavorable. AVI systems can include a demonstration system capable of providing simulations too users of various types of vibration isolation systems under various input conditions, so that users can be introduced to the system benefits over other systems before using an AVI equipped product in its intended application.
    Type: Application
    Filed: February 4, 2013
    Publication date: August 7, 2014
    Inventors: Antonio Sangermano, II, James A. Parison, JR., Brian A. Selden
  • Patent number: 8775019
    Abstract: In an active anti-vibration supporting device (301), an ACM_ECU (200) for estimating an engine vibration state by using output data from a crank pulse sensor (Sa) and a TDC sensor (Sb) drives a driving unit (41) so as to extend and contract and thereby suppresses the transmission of vibration. The ACM_ECU (200) calculates the number of STGs (S1F) that is a quotient obtained when dividing the phase delay (P1F) of a target current value waveform by an average STG time ((T1)/4) in a first cycle (C1) of engine vibration and the remaining time (P?1F) of the phase delay (P1F), wherein the target current value waveform is used for suppressing the transmission of the engine vibration calculated using the output data from the crank pulse sensor (Sa) and the TDC sensor (Sb). The timing at which the elapse of the STG time equivalent to the number of STGs (S1F) in a third cycle (C3) of the engine vibration in the driving timing of the driving unit has been detected is set as a phase delay reference.
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: July 8, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hideyuki Okamoto, Tetsuya Ishiguro
  • Patent number: 8763996
    Abstract: A method includes the steps of: detecting “starter ON” by IG-SW signal (step S12); calculating an moving average value TCRKAVE of crank pulse intervals (steps S13-S17); determining engine starting when the TCRKAVE is less than or equal to a threshold value Tth (step S19); and controlling a vibration isolating support unit M based on a natural vibration frequency of the engine when engine starting is determined (steps S20-S22).
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: July 1, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tetsuya Ishiguro, Hirotomi Nemoto, Shungo Fueki
  • Patent number: 8745977
    Abstract: A mass damper method includes providing an electroactive polymer (7) and using the electroactive polymer (7) to manufacture a mass damper (6). The mass damper (6) for damping a vibrating system of a motor vehicle includes at least one of a damping body (10) forming a countervibrating mass with a damping spring (11) and a springy damping body (10) forming the countervibrating mass. The damping body (10) is indirectly or directly coupled with the vibrating system. The springy damping body (10) or the damping spring (11) includes an electroactive polymer (7). A motor vehicle exhaust system of an internal combustion engine is provided including an exhaust gas line (3) with an exhaust pipe (4), an exhaust gas-treating device (5) integrated in the exhaust pipe and the mass damper (6) coupled with the exhaust gas line.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: June 10, 2014
    Assignee: Eberspächer Exhaust Technology GmbH & Co. KG
    Inventor: Arnulf Spieth
  • Patent number: 8702074
    Abstract: In order to control vibrations of two parts of a piece of machinery, a variable force may be generated to oppose the vibrations, with the variable force being generated under control of a controller on the basis of an iterative relationship, the iterative relationship being such as to generate the force of one iteration using a controller output signal in frequency domain vector form derived from the controller output signal of the immediately previous iteration in frequency domain vector form plus a frequency domain vector quantity derived from the resultant vibration of more than one previous iteration. Where these two parts are connected by multiple (f) mounting devices, the controller output signals a previous iterations are taken into account, and the frequency domain vector quantity derived from the controller output signals and more than f previous iterations.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: April 22, 2014
    Assignee: DTR VMS Limited
    Inventor: Peter Michael Trewhella Fursdon
  • Patent number: 8684340
    Abstract: A variable stiffness liquid inertia vibration isolation device includes a liquid inertia vibration elimination isolator and a variable stiffness spring operably associated with the liquid inertia vibration elimination isolator for varying the stiffness of the liquid inertia vibration isolator. The variable stiffness spring may include an elastomeric pad exhibiting a first stiffness along a first axis and a second stiffness, significantly greater than the first stiffness, along a second axis that is perpendicular to the first axis.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: April 1, 2014
    Assignee: Textron Innovations Inc.
    Inventors: Michael R. Smith, Frank B. Stamps
  • Patent number: 8672105
    Abstract: A damping control device includes a lower core, a nonmagnetic orifice, an upper core, and a membrane made of an elastic material to shield a lower end of the lower core, and in which the lower core and the upper core are magnetized when a current is applied to the coil, and a predetermined amount of the MR fluid is filled therein, such that the MR fluid flows between the pressure applying plate and the upper plate according to an elastic compression of the membrane.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: March 18, 2014
    Assignee: Hyundai Motor Company
    Inventor: Jang-Ho Kim
  • Patent number: 8632061
    Abstract: In a so-called motoring state at the time of engine starting before actuating engine, there is a problem that a roll vibration, which is generated when an engine revolution speed Ne is at a predetermined engine revolution speed and vibrates the engine and the vehicle body largely, can not be suppressed. For this reason, the present invention provides an active vibration isolating support apparatus in which the roll vibration can be suppressed in the motoring state at the time of engine starting.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: January 21, 2014
    Inventor: Hirotomi Nemoto
  • Patent number: 8626386
    Abstract: A damping apparatus for an automobile is provided, capable of ensuring a high level of reliability while obtaining excellent damping effect with simple configuration. The damping apparatus for an automobile that reduces vibrations of an automobile body may include an actuator that is attached to the automobile body and drives an auxiliary mass; a current detector that detects a current flowing through an armature of the actuator; a section that detects a terminal voltage applied to the actuator; a calculation circuit that calculates an induced voltage of the actuator, and further calculates at least one of the relative velocity, relative displacement, and relative acceleration of the actuator, based on a current detected by the current detector and the terminal voltage; and a control circuit that drive-controls the actuator based on at least one of the relative velocity, relative displacement, and relative acceleration of the actuator calculated by the calculation circuit.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: January 7, 2014
    Assignee: Shinko Electric Co., Ltd.
    Inventors: Yasushi Muragishi, Hideaki Moriya, Yushi Sato, Takashi Fukunaga, Katsuyoshi Nakano, Hiroshi Nakagawa, Takayoshi Fujii, Takashi Onoue, Masaaki Narihisa
  • Patent number: 8616536
    Abstract: An active dynamic vibration absorber apparatus for a vehicle that may be mounted to a frame of the vehicle and vibrates when power may be supplied to attenuate vibration of the vehicle, may include a housing, an upper spring and a lower spring, and a yoke assembly disposed between the upper spring and the lower spring which may be plates arranged in parallel, and selectively vibrates up/down in the housing, wherein the yoke assembly has an upper protrusion and a lower protrusion that protrude from the top and the bottom thereof, respectively, the upper protrusion being fastened to the center of the upper spring through the housing, and the lower protrusion being fastened to the center of the lower spring in the housing.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: December 31, 2013
    Assignees: Hyundai Motor Company, Pavco Co., Ltd.
    Inventors: Jae-San Kim, Jeong-Hoon Kim, Un-Hwan Park, Yoon-Chul Song, Sang-Heun Oh
  • Publication number: 20130328254
    Abstract: A torque rod (1) has two elastic bushes (2, 3) to be mounted respectively to a vibration-generating side and a vibration-receiving side, and a connecting rod (4) connecting the two elastic bushes (2, 3). The actively controlled vibration cancellation means (5) is an actuator including: the shaft (5a) having two opposite ends mounted to the connecting rod (4) and extending in an axial direction of the connecting rod (4), the mass member (5b) shaped in a tube to surround the shaft (5a); a coil (5e) and a winding core (5f) fixed to the shaft (5a) in the tube-shaped mass member (5b); a permanent magnet (5d) mounted to an inner peripheral surface of the tube-shaped mass member (5b) or the shaft (5a), and a connecting member (5c) for connecting at least one end of the tube-shaped mass members (5b) to the shaft (5a).
    Type: Application
    Filed: August 23, 2011
    Publication date: December 12, 2013
    Applicants: NISSAN MOTOR CO., LTD., BRIDGESTONE CORPORATION
    Inventors: Hiroshi Kojima, Yukihiro Sugimoto, Akira Ueki, Humiharu Kurose, Takanobu Sugiyama, Yoshiyasu Kimura, Masahiko Kondo, Yuusuke Satou
  • Patent number: 8594911
    Abstract: An ACM_ECU (200) estimates an engine vibration state in a first cycle (C1) of engine vibration on the basis of signal outputs from a TDC sensor (Sb) and a crank pulse sensor (Sa) and calculates a target current value waveform having a cycle length (T1). The ACM_ECU (200) then samples the target current value waveform at a constant sampling rate, thereby obtaining, for example, an aggregate of the data of target current values (Fr_ICMD) for a driving unit for driving an active control mount (MF) on the front side (Fr side). After that, the ACM_ECU (200) estimates the cycle length (T3?) of a third cycle (C3) of the engine vibration on the basis of a predetermined number of crank pulse intervals at a timing when the data of the target current values (Fr_ICMD) are output to the driving unit (41). The obtained aggregate of the data of target current values is corrected so as to correspond to the estimated cycle length (T3?) and fed to the driving unit (41).
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: November 26, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventor: Hideyuki Okamoto
  • Patent number: 8570130
    Abstract: A multilevel magnetic system described herein includes first and second magnetic structures that produce a net force that transitions from an attract force to a repel force as a separation distance between the first and second magnetic structures increases. The multi-level magnetic system is configured to maintain a minimum separation distance between a transition distance where the net force is zero and a separation distance at which a peak repel force is produced.
    Type: Grant
    Filed: May 11, 2013
    Date of Patent: October 29, 2013
    Assignee: Correlated Magnetics Research, LLC.
    Inventors: Larry W. Fullerton, Mark D. Roberts
  • Patent number: 8556240
    Abstract: A fluid-filled vibration damping device wherein a partition member is formed by fitting an inner orifice member inside an outer orifice member with the members relatively displaceable. An orifice-defining window is provided on either one of an inside peripheral face of the outer orifice member and an outside peripheral face of the inner orifice member. An orifice passage is defined utilizing a zone being produced through partial covering of the orifice-defining window by the other of the outer orifice member and the inner orifice member. The covered zone of the orifice-defining window changes through relative displacement of the inner orifice member and the outer orifice member, so that a passage length along the orifice passage changes in association with change of the covered zone of the orifice-defining window.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: October 15, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Koichi Hasegawa, Seiichiro Yamamoto
  • Patent number: 8548678
    Abstract: An apparatus has an active suspension including an electromagnetic actuator coupled to a plant in a vehicle. A force bias eliminator is coupled to the plant for causing the actuator to experience a zero-mean load, and a vibration isolation block generates a control signal based on the response of a nominal plant to measured disturbances of the actively suspended plant. A compensation system modifies the control signal in response to a difference between the response of the nominal plant to the control signal and a measured response of the actively-suspended plant to the control signal.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: October 1, 2013
    Assignee: Bose Corporation
    Inventors: Upendra V. Ummethala, Daniel Francis Opila, James A. Parison, Jr., Thomas C. Shroeder, Linda T. Scully, Roman N. Litovsky
  • Patent number: 8517359
    Abstract: A hydraulic damping mount has a working chamber and a compensating chamber, which are filled with a hydraulic liquid and separated from each other by an intermediate plate. The working chamber and the compensating chamber are connected to each other via a transfer passage and a bypass channel. The bypass channel can be opened or closed by an actuator. The actuator is configured as a one-piece elastomer part, which has a fastening portion on the edge and an actuating element, which is connected to the fastening portion via a flexible connecting portion.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: August 27, 2013
    Assignee: Trelleborg Automotive Germany GmbH
    Inventors: Arndt Graeve, Henry Winter, Ulrich Mews, Eric Eisel
  • Patent number: 8504239
    Abstract: A damping apparatus for an automobile is provided, capable of ensuring a high level of reliability while obtaining excellent damping effect with simple configuration. The damping apparatus for an automobile that reduces vibrations of an automobile body may include an actuator that is attached to the automobile body and drives an auxiliary mass; a current detector that detects a current flowing through an armature of the actuator; a section that detects a terminal voltage applied to the actuator; a calculation circuit that calculates an induced voltage of the actuator, and further calculates at least one of the relative velocity, relative displacement, and relative acceleration of the actuator, based on a current detected by the current detector and the terminal voltage; and a control circuit that drive-controls the actuator based on at least one of the relative velocity, relative displacement, and relative acceleration of the actuator calculated by the calculation circuit.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: August 6, 2013
    Assignee: Shinko Electric Co., Ltd.
    Inventors: Yasushi Muragishi, Hideaki Moriya, Yushi Sato, Takashi Fukunaga, Katsuyoshi Nakano, Hiroshi Nakagawa, Takayoshi Fujii, Takashi Onoue, Masaaki Narihisa
  • Publication number: 20130127098
    Abstract: Disclosed is a variable differential mount apparatus using a Magnetorheological Elastomer (MRE). The apparatus includes a core, a coil, a plurality of MRE supports, and a magnetic path formation member. The core has a plurality of arms disposed thereon. The coil is wound on the plurality of arms, respectively. The plurality of MRE supports are disposed to face the plurality of arms, respectively. The magnetic path formation member is disposed outside the plurality of MRE supports. More specifically, a current is applied to coil to vary the degree of stiffness of the variable differential mount based on a particular driving condition to allow for increased handling and comfort.
    Type: Application
    Filed: March 2, 2012
    Publication date: May 23, 2013
    Applicants: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University), HYUNDAI MOTOR COMPANY
    Inventors: Min Soo Kim, Kyung Mo Yang, Seong Hoon Lee, Ji Hyun Yoon, Un Chang Jeong, In Hyung Yang, Jae Eung Oh
  • Patent number: 8401735
    Abstract: A damping apparatus for an automobile is provided, capable of ensuring a high level of reliability while obtaining excellent damping effect with simple configuration. The damping apparatus for an automobile that reduces vibrations of an automobile body may include an actuator that is attached to the automobile body and drives an auxiliary mass; a current detector that detects a current flowing through an armature of the actuator; a section that detects a terminal voltage applied to the actuator; a calculation circuit that calculates an induced voltage of the actuator, and further calculates at least one of the relative velocity, relative displacement, and relative acceleration of the actuator, based on a current detected by the current detector and the terminal voltage; and a control circuit that drive-controls the actuator based on at least one of the relative velocity, relative displacement, and relative acceleration of the actuator calculated by the calculation circuit.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: March 19, 2013
    Assignee: Shinko Electric Co., Ltd.
    Inventors: Yaushi Muragishi, Hideaki Moriya, Yushi Sato, Takashi Fukunaga, Katsuyoshi Nakano, Hiroshi Nakagawa, Takayoshi Fujii, Takashi Onoue, Masaaki Narihisa
  • Patent number: 8387959
    Abstract: A structure of an orifice plate for an engine mount filled with a magnetorheological (“MR”) fluid may include a core of which a center part may be formed at the center thereof and a blade part may be formed with a plurality of blades protruding in a radial direction from an outer periphery of the center part, and a coil assembly enclosing the outer periphery of the center part and wired up, wherein a gap may be formed between the blades so as to allow the MR fluid to flow between the blades and the coil assembly applied with current magnetizes adjacent blades to have different polarities.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: March 5, 2013
    Assignee: Hyundai Motor Company
    Inventor: Jang-Ho Kim
  • Patent number: 8333368
    Abstract: A hydraulically damped mounting device has first and second anchor parts connected by a first deformable wall, and a working chamber for hydraulic fluid partially bounded by the first deformable wall. The working chamber is connected to a composition chamber for the hydraulic fluid by a first passageway, the composition chamber being partially bounded by a second deformable wall. There is also an auxiliary chamber partially bounded by a third deformable wall connected to the working chamber by a second passageway. The mounting device then has a vacuum chamber connectable to a vacuum source for varying the pressure in the vacuum chamber.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: December 18, 2012
    Assignee: DTR VMS Limited
    Inventor: Michael Paul Rooke
  • Patent number: 8282087
    Abstract: An oscillation decoupling device is disclosed with a load-receiving element which is mounted in an oscillating manner relative to a support unit at least along an active direction along which at least part of the load is applied having at least one sensor unit which detects an oscillation of the element due to the load and at least one actuator unit acting against the oscillation of the element. The support unit is modularly configured and serves as a support structure for at least one unit that receives the element and is elastically deformable in the active direction of the load. The load-receiving element is connected to the elastically deformable unit. The at least one actuator influences the deformation applied to the at least one unit, or is integrated thereon, so that the at least one actuator initiates a deformation acting against an elastic deformation due to the load inside the unit.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: October 9, 2012
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Dirk Mayer, Tobias Melz, Martin Thomaier
  • Patent number: 8279031
    Abstract: A multi-level magnetic system includes first and second magnetic structures and transitions between an attract mode and a repel mode when the first and second magnetic structures are separated by an equilibrium separation distance. The multi-level magnetic system is placed between two objects and configured to oscillate about the equilibrium separation distance in response to a vibration from a motion source. The oscillation about the equilibrium separation distance causes the multi-level magnetic system to function as a low pass filter that substantially attenuates vibrations above a cutoff frequency thereby limiting the conducting of the vibration between the two objects.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: October 2, 2012
    Assignee: Correlated Magnetics Research, LLC
    Inventors: Larry W. Fullerton, Mark D. Roberts
  • Patent number: 8269438
    Abstract: An apparatus and method for driving a motor of an air conditioner are disclosed. A method for driving a motor of an air conditioner includes driving the motor in response to a predetermined speed command, sequentially detecting first and second mechanical angles in response to the speed command or a reference speed being spaced apart from the speed command by a predetermined range, calculating a maximum speed mechanical angle corresponding to a maximum speed ripple of the motor on the basis of the detected first and second mechanical angles, and compensating for load torque of the motor on the basis of the calculated the maximum speed mechanical angle. As a result, the speed ripple is decreased during the constant speed operation.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: September 18, 2012
    Assignee: LG Electronics Inc.
    Inventors: Youngho Hong, Yangkwang Choi, Wonseok Kim
  • Patent number: 8267383
    Abstract: Devices and methods are provided to facilitate measurement of forces acting on locations connecting a subframe portion and a body portion of a vehicle, such devices and methods include mount devices having an inner member, an outer member, at least one sensor, a sleeve and an annular member. The sensor is disposed within an annular chamber formed between the inner member and the outer member. The sensor is attached to at least one of the inner member and the outer member. The sensor is configured to measure force exerted on the mount device during use of a vehicle. Vehicles including these mount devices are also provided.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: September 18, 2012
    Assignee: Honda Motor Company, Ltd.
    Inventor: Charles J. Gagliano
  • Publication number: 20120132476
    Abstract: An active vibratory control device for a vehicle, comprising a link comprising a link body that extends between first and second articulations intended to be connected one to a vibrating member and the other to a chassis, and a mounting base connected to the second articulation of the link so as to enable the link to pivot with respect to the mounting base, this mounting base being secured to a vibration generator.
    Type: Application
    Filed: November 22, 2011
    Publication date: May 31, 2012
    Applicant: HUTCHINSON
    Inventors: Jean-Luc Gastineau, Pascal Petit, Eric Seminatore
  • Patent number: 8157251
    Abstract: A vibration damping mount assembly having a vibration damping mount main body and a tubular bracket. The tubular bracket is made of lightweight material composed of non-ferric metal or synthetic resin, and has an inside peripheral face including an upper tapered face and a lower tapered face that gradually expand in diameter towards openings at either axial end from an axially medial section. A flanged portion of a second mounting member is axially juxtaposed against an open end of the upper tapered face, while the lower tapered face is pressed against a rubber fitting, with the lower tapered face locked in contact against an annular mating face of the rubber fitting thereby providing dislodging of the vibration damping mount main body from the tubular bracket.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: April 17, 2012
    Assignees: Tokai Rubber Industries, Ltd., Honda Motor Co., Ltd.
    Inventors: Eiji Tanaka, Tetsuya Miyahara
  • Patent number: 8157250
    Abstract: An hydraulic mount providing double idle rate dip frequencies of dynamic stiffness, the idle rate dips being vibration orders of an internal combustion engine corresponding to one and two times firing frequencies. The double idle rate dip is achieved by providing the first idle rate dip at the first vibration order via resonance tuning of the idle inertia track, and providing the second idle rate dip at the second vibration order via additional resonance tuning of a tunable air conduit.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: April 17, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Ping Lee
  • Patent number: 8152145
    Abstract: A conically-shaped, magneto-rheologically responsive shock and vibratory isolator. The isolator includes a conically-shaped magneto-rheological elastomer component attached to opposing faces of a first and second mounting plate. Within the magneto-rheological elastomer component is a magneto-rheologically responsive fluid contained within an elastomer jacket. By its conical shape and magneto-rheological elastomeric composition, the isolator is capable of both adjusting its response to shock and vibratory disturbances of varying frequency, while maintaining an identical response along any axis (isoelasticity).
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: April 10, 2012
    Assignee: Honeywell International Inc.
    Inventor: Robert B. Anderson
  • Patent number: 8150053
    Abstract: The invention is a device and a method for eliminating vibrations of a mechanical structure with at least one electromechanical converter material that is actively connected to the mechanical structure and connected to an electrical circuit with at least one electrical impedance. The electrical circuit is connected to an interface, via which the at least one electrical impedance can be variably adjusted by wireless or wired communications with a control unit that is separated from the electrical circuit in which the electrical impedance features at least one variable ohmic resistor, inductive resistor or capacitor.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: April 3, 2012
    Assignees: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V., Technische Universität Darmstadt
    Inventors: Holger Hanselka, Tobias Melz, Dirk Mayer, Christoph Klein
  • Patent number: 8132796
    Abstract: A fluid filled type vibration damping device wherein an elastic rubber film is disposed to partially define a primary fluid chamber disposed on one side thereof, and a pressure operating chamber is disposed on an opposite side from the primary fluid chamber with the elastic rubber film interposed therebetween. The elastic rubber film has a dome shape and an attraction face of the pressure operating chamber has an inverted dome shape, and has a negative pressure suction groove including an outer circumferential groove extending in a circumferential direction at an outer peripheral portion of the attraction face and opening to the pressure operating chamber, and a negative pressure suction bore for introducing a negative pressure to the pressure operating chamber is connected to the negative pressure suction groove.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: March 13, 2012
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Mutsumi Muraoka
  • Patent number: 8100388
    Abstract: An electromagnetic active engine mount apparatus includes a sub-channel through which working fluid flows is formed in the central portion of an electromagnetic drive so as to be able to cool heat generated from the coil of a solenoid section of the electromagnetic drive by repetitive operation of a vibrating member. Thus, the electromagnetic active engine mount apparatus can inhibit the heat generated from the coil to thus prevent thermal damage to various components formed of rubber, and provide improvement of its durability, reduction of its size, and simplification of its structure.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: January 24, 2012
    Assignees: Hyundai Motor Company, Daedong Movel System Co., Ltd., Automobile Industrial Ace Co., Ltd., Daedong System Co., Ltd.
    Inventors: Doo Hum Lee, Hyung Su Kang, Jeong Hoon Kim, Sung Woo Hong, Ho Chul Lee
  • Patent number: 8100389
    Abstract: A pneumatic actuator for use in a vibration damping device comprising: a base housing; an elastic wall member being fastened fluid-tightly to the base housing to form a working air chamber therebetween; and an urging member positioned within the working air chamber for exerting urging force on an output portion provided to the elastic wall member, such that the output portion is actuated to undergo displacement in opposition to the urging member through change in an air pressure in the working air chamber from an outside. At least one of opposing faces of the base housing and the elastic wall member on the working air chamber side thereof has a plurality of rib portions which extend from an inner circumferential side thereof towards an outer circumferential side thereof. A vibration damping device equipped with the pneumatic actuator is also disclosed.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: January 24, 2012
    Assignees: Tokai Rubber Industries, Ltd., Honda Motor Co., Ltd.
    Inventors: Eiji Tanaka, Tetsuya Miyahara
  • Patent number: 8091694
    Abstract: Actuator arrangement with an actuator (8), a reference mass (22), a spring (24) and a first sensor (26; 42, 43; 32, 36). The actuator (8) applies a force between a first object (2) and to a second object (16; 54). The reference mass (22) is, in use, supported by a third object (16; 56) by means of the spring (24). The first sensor (26; 42, 43; 32, 36) generates a first distance signal that depends on a first distance (z2; z5, z6; z3, z4) between the reference mass (22) and the first object (2) and is applied to a controller (6) to actuate the actuator (8).
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: January 10, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Michael Johannes Vervoordeldonk, Theo Anjes Maria Ruijl, Robertus Mathijs Gerardus Rijs, Johannes Cornelius Antonius Muller
  • Patent number: 8095268
    Abstract: An apparatus includes a force bias element coupled to a plant in a vehicle. The force bias element has a first bandwidth. An active suspension includes a linear electromagnetic actuator located within an interior of the force bias element. The linear electromagnetic actuator has a second bandwidth that is higher than the first bandwidth and is coupled to the plant.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: January 10, 2012
    Assignee: Bose Corporation
    Inventors: James A. Parison, Christopher J. Breen, Richard F. O'Day
  • Publication number: 20110316207
    Abstract: A vibration isolator having a housing defining a fluid chamber, piston assembly, tuning passage, and a switchable fluid path assembly for changing the isolation frequency of the vibration isolator. The piston assembly is resiliently disposed within the housing. A vibration tuning fluid is allowed to flow within the housing. Actuation of a valve in the switchable fluid path assembly selectively controls fluid flow within the fluid path of the switchable fluid path assembly.
    Type: Application
    Filed: March 12, 2009
    Publication date: December 29, 2011
    Inventors: Michael R. Smith, Frank B. Stamps
  • Patent number: 8083217
    Abstract: A Fluid-filled type vibration damping device, which is configured to be free from the necessity of supplying a continuous application of electricity to a coil so as to maintain a movable valve body in either an opened state or a closed state, is provided. The device includes a cam mechanism, which transmits a rotational drive force of a motor to the movable valve body in the form of a reciprocating drive force. In the device, a first rotation angle switch is connected to a first control switch in series relative to a motor coil, and a second rotation angle switch is connected to a second control switch in parallel relative to the first switch. The first rotation angle switch is turned on in a state of a first angular range ?1, and the second rotation angle switch is turned on in a third angular range ?3. When the first control switch and the second control switch receive the same control signal, they are brought into respective inverted ON/OFF states.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: December 27, 2011
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Hironori Koyama, Koichi Hasegawa, Atsushi Muramatsu
  • Patent number: 8047513
    Abstract: A vibration damping device including: a pressure-receiving chamber and an equilibrium chamber connected by a first orifice passage; a movable member disposed within the pressure-receiving chamber, to form a primary fluid chamber partly defined by a rubber elastic body, and an auxiliary fluid chamber partly defined by an oscillating plate; and a second orifice passage connecting the auxiliary fluid chamber to the equilibrium chamber. A through-hole is formed in a partition member that partitions the primary fluid chamber and the auxiliary fluid chamber, the oscillating plate is housed within the through-hole with a gap provided therebetween whereby the oscillating plate is displaceable in an axial direction within the through-hole. A stopper abutted by the oscillating plate during displacement to one axial side is provided, with the gap becoming closed off when the oscillating plate is in a state of abutment against the stopper.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: November 1, 2011
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Mutsumi Muraoka, Hironori Koyama
  • Patent number: 8037981
    Abstract: Device and process for oscillation insulation in a transmission path. The device includes a first body structured and arranged to undergo an oscillation movement, at least one rigid connection element, a second body connected to the first body via the at least one rigid connection element, and an actuator device attached to the at least one connection element. A sensor unit is arranged in an interface area of the at least one connection element, and a regulator unit, connected to the sensor unit, is arranged to control the actuator device to perform an elastic deformation equivalent to an oscillation movement of the first body. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: October 18, 2011
    Assignees: EADS Deutschland GmbH, Eurocopter Deutschland GmbH
    Inventors: Marius Bebesel, Peter Jänker, Rudolf Maier, Henning Strehlow