Linear Inertia Or Accelerometer (includes Pendulum Type) Patents (Class 303/181)
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Patent number: 11592460Abstract: The present invention relates to a scan head for a scanning probe microscope arranged for moving a probe including a conductive cantilever relatively to a substrate surface, the head comprising: a first electrode positioned such that a capacitor is formed across a gap between the first electrode and a second electrode, wherein the second electrode is formed by the conductive cantilever; a voltage source for actuating the conductive cantilever by applying a voltage to the capacitor; and at least a first resistor arranged in series between the voltage source and one of the first and second electrodes such as to form an RC circuit for damping a vibration of the cantilever.Type: GrantFiled: December 3, 2019Date of Patent: February 28, 2023Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNOInventors: Roelof Willem Herfst, Hamed Sadeghian Marnani
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Patent number: 10569750Abstract: A fuzzy-based control system in a motor vehicle for controlling a speed comprises a brake pressure measurement unit, a signal processing unit and a control unit. The brake pressure measurement unit is adapted as a finite state machine to measure a current brake pressure of a brake of a wheel of the motor vehicle dependent on a trigger. The signal processing unit is adapted to estimate a current adhesion value ? between a tyre associated with the wheel and the current ground, based on the current brake pressure of the brake and further measurement values. The estimating comprises an inference based on fuzzy rules and a fuzzification, a subsequently a defuzzification of the inference. The control unit is adapted to control a speed of the motor vehicle or the brake pressure of the brake, based on the estimated current adhesion value ?.Type: GrantFiled: July 28, 2017Date of Patent: February 25, 2020Assignee: Lucas Automotive GmbHInventors: Andreas Hoehn, Alexander Rams
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Patent number: 8688380Abstract: A method and apparatus in a vehicular telemetry system and a remote data analysis system for detecting an event and switching a data acquisition mode. Checking a state of a data acquisition mode. If the state is in a filtered data state and if an indicator value is at or above a threshold value, then switch the data acquisition mode to an unfiltered data state and acquire unfiltered data. If the data acquisition mode is in an unfiltered data state and if the indicator value is below the threshold value, switch the data acquisition mode to a filtered data state and acquire filtered data.Type: GrantFiled: April 23, 2012Date of Patent: April 1, 2014Assignee: GEOTAB Inc.Inventors: Neil Charles Cawse, Darren Marc Lohmann Beams, Antonios Partheniou, Stelian Dumitrascu
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Publication number: 20100019567Abstract: A device for decelerating or braking a moving mass includes a movably guided coupling member for pressing a brake lining against a braking surface and a brake actuator, filled with hydraulic liquid and connected to the coupling member, for generating a pressure force that can be passed into the brake lining through the coupling member. The brake lining is connected to a pressure transducer that can be fastened on a frame of the mass to be decelerated or braked through a connecting device. The pressure transducer has a hydraulic liquid-filled supporting cylinder and a supporting piston interacting therewith. The supporting cylinder communicates with a brake cylinder through hydraulic lines. This allows an improved adjustment of deceleration or braking. For this purpose, a regulating device adjusts the brake force depending on a predetermined theoretical value.Type: ApplicationFiled: August 23, 2007Publication date: January 28, 2010Applicant: SIEMENS AKTIENGESELLSCHAFTInventors: Toni Schiffers, Christian Stammen
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Patent number: 6361123Abstract: A yaw control system for an automotive drivetrain includes an equal torque differential, an engine-driven hydraulic pump, and hydraulically actuated control brakes operable to apply a resistive torque to either a left or right axle of the driven wheels. An acceleration-responsive control valve actuates one of the control brakes according to the direction of lateral acceleration of the vehicle. The control valve includes an inertial or seismic mass that moves a valve member to connect or disconnect the control brakes from the hydraulic pump. The control brakes are attached to the vehicle chassis so the resistive torque is reacted through the chassis, thereby inducing a yaw moment that coincides with and assists the turning of the vehicle.Type: GrantFiled: July 21, 2000Date of Patent: March 26, 2002Inventor: James T. Hamilton
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Patent number: 6305760Abstract: A behavior control device of a vehicle including a longitudinal acceleration sensor has a judgment system for judging if the longitudinal acceleration sensor is operating normally by comparing an output of the acceleration sensor with a corresponding longitudinal acceleration of the vehicle detected based upon a wheel rotation speed detected by a sensor therefor, excepting at least when the acceleration sensor output is much different from a longitudinal acceleration calculated based upon a wheel drive torque, so that the reliability of the behavior control incorporating the acceleration sensor is ensured, while when the acceleration sensor is not operating normally, the behavior control is modified or suspended.Type: GrantFiled: December 15, 1999Date of Patent: October 23, 2001Assignee: Toyota Jidosha Kabushiki KaishaInventor: Hirotada Otake
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Patent number: 6282480Abstract: A brake control unit provides a properly oriented brake control display irrespective of whether the brake control unit is installed in a normal or inverted mode. The brake control unit determines whether a brake control signal is asserted when the brake control unit is connected to a vehicle power supply. If so, the brake control display is inverted. Alternatively, the brake control unit determines orientation by monitoring a position sensitive device. The brake control unit is also capable of determining and displaying the status of a brake load on the brake control display. In addition, the brake control unit is capable of determining and displaying an output voltage of the brake control unit on the brake control display.Type: GrantFiled: October 29, 1999Date of Patent: August 28, 2001Inventors: Dennis M. Morse, Bruce E. Smith, Larry Eccleston
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Patent number: 6260935Abstract: The present invention is directed to an unpaved road detection system wherein a slip rate is calculated on the basis of wheel speeds detected by wheel speed sensors and a vehicle speed detected by a vehicle speed detection device. A linear acceleration sensor is provided for detecting an acceleration of the vehicle in a longitudinal direction thereof to produce a signal linearly proportional to the detected acceleration. A variation of the signal produced by the linear acceleration sensor corresponding to the variation of the slip rate is calculated. The variation of the signal is compared with a reference value. If the variation exceeds the reference value, it is determined that the vehicle is traveling on an unpaved road.Type: GrantFiled: December 22, 1998Date of Patent: July 17, 2001Assignee: Aisin Seiki Kabushiki KaishaInventors: Yasuhiro Abe, Masaki Banno, Toshihisa Kato, Shinji Tsugawa, Koichi Kondo, Yasushi Kobayashi, Hiroyuki Matsubayashi
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Patent number: 6238017Abstract: A motorcycle chassis embodies novel techniques, geometries, and configurations to provide enhanced performance, including new techniques to enhance braking performance. A first feature facilitates the application of braking force to each wheel in proportion to its traction capability. Maximum deceleration rates are provided prior to wheel lockup. A second feature applies liquid cooling to a brake disk. Liquid cooling eliminates brake fade caused by overheating of the brake pad material. Aerodynamic control features in concert with unique component arrangement better protect the rider from wind forces and also reduce aerodynamic drag. Narrow steering bars enclosed by bodywork and deep leg notches in the fairing contour largely remove rider induced air flow trips. The leg notches serve to brace the rider during deceleration, unloading his wrists from much of the braking force. An exhaust system routed over the engine permits a totally smooth body undercarriage to reduce aerodynamic drag.Type: GrantFiled: October 1, 1998Date of Patent: May 29, 2001Inventor: Frederick G. Eitel
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Patent number: 5890777Abstract: According to the present invention, the gradient of duty pressure increase can be adjusted to a best possible value even when an M/C pressure has varied. For example, duty ratio is set to a first set value when a difference between the M/C pressure and a wheel locking pressure is equal to or larger than a predetermined value and to a second set value for a longer pressure increase duration when the difference is smaller than the predetermined value. Then, a brake fluid pressure control valve is operated so that the duty pressure can be increased according to the duty ratio.Type: GrantFiled: November 15, 1996Date of Patent: April 6, 1999Assignee: Aisin Seiki Kabushiki KaishaInventors: Takeshi Naito, Akitaka Nishio
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Patent number: 5785393Abstract: An electronic brake controller for actuating electric wheel brakes of a towed vehicle which includes a zero adjusting circuit for a pendulum in an inertia sensor.Type: GrantFiled: February 19, 1997Date of Patent: July 28, 1998Assignee: Hayes Wheels International, Inc.Inventors: Michael C. McGrath, Wayne M. Groleau, Michael A. Hedding, Brian J. Stockford, David Sullivan