Abstract: A seat base includes a plurality of linear actuators each having a first end pivotally mounted to a base member and a second end pivotally mounted to a seat member. A controller is adapted for controlling an extension length of each of the plurality of linear actuators in a coordinated manner for adjusting a position of the seat member with six degrees-of-freedom and for damping vibration of the seat member. An active vibration mitigation method for reducing vibrations of an aircraft seat includes receiving vibration data from one or more accelerometers mounted to the aircraft seat and determining a vibration profile based on the vibration data. When vibration mitigation is warranted, control signals for damping vibration are determined and transmitted to a plurality of linear actuators adapted to support the aircraft seat.

Abstract: An apparatus for hanging an instrument includes a wall plate, an axial arm, and a yoke. The wall plate is configured to secure the apparatus to a wall or other suitable surface. The axial arm extends axially between the wall plate and the yoke. The yoke is configured to receive at least a portion of an instrument. The apparatus also includes a humidistat disposed on a surface of the wall plate opposite the wall or other suitable surface. The humidistat is configured to display a relative humidity value corresponding to an amount of water vapor in the atmosphere proximate the instrument.

Abstract: A cup developed for tremor patients, which provides for the tremor patients to carry out their dietary activities in an easy way, suitable for long-term usage, the cup including a body, an upper body, a central body, a lower body, a valve, a button, a plane, a wire, an under-button spring, a cup handle spring, a spring at the back of the pin, a spring at the back of magnet-c, a body sheath, pockets, a handle sheath, a magnet housing, a magnet-a, a magnet-b and a magnet-c.

Abstract: A smoke detector includes a tamper indicator that can prevent a cover from at least partially covering a battery location and/or mounting of a detector body to a detector mount if a battery is not located at the battery location of the detector body. The detector mount and/or cover can engage with the detector body by relative rotation about an engagement axis, and the tamper indicator can pivot about a pivot axis that is parallel to the engagement axis and/or move along a linear path. The tamper indicator can prevent engagement of a portion of the detector mount, such as an intermediate component between the detector body and a base of the detector mount, with the detector body. The intermediate component can at least partially cover the battery location when engaged with the detector body. The base of the detector mount can engage with the detector body via the intermediate component.

Abstract: In in-process inspection or calibration of a print bed or 3D printed part with a 3D printer, toolpaths defining printing material shells for deposition by a 3D printer are compared to surface profile scans from a range scanner to identify differences between the print bed, instructed deposition and the measured result, permitting pausing or alteration of the toolpaths or printing process.

Abstract: A three dimensional printing system, the system including: a printhead; and a removable tray comprising a reservoir, the tray located in a print bed of the three dimensional printing system such that liquid purged from the printhead is deposited in the reservoir, wherein prior to the system purging liquid from the printhead, the system confirms that the tray is in place using a sensor.

Abstract: An apparatus for hanging an instrument includes a wall plate, an axial arm, and a yoke. The wall plate is configured to secure the apparatus to a wall or other suitable surface. The axial arm extends axially between the wall plate and the yoke. The yoke is configured to receive at least a portion of an instrument. The apparatus also includes a humidistat disposed on a surface of the wall plate opposite the wall or other suitable surface. The humidistat is configured to display a relative humidity value corresponding to an amount of water vapor in the atmosphere proximate the instrument.

Abstract: An aerial movement system and method for calibrating same includes, generally, registration points and wireless position transceivers proximate the registration points and the object that communicate with a computer and allow for the computer to determine the appropriate amount of support lines to draw in or release.

Abstract: An isolation joint with an integral angle measurement system. The isolation joint includes a suspension interface yoke, a payload support member, a spherical bearing, and an integral angle measurement system. The suspension interface yoke includes a suspension interface configured to couple the suspension interface yoke to one or more suspension bars. The payload support member includes a payload interface configured to couple a payload to the payload support member. The spherical bearing includes an inner race secured to one of the suspension interface yoke and the payload support member and an outer race secured to the other of the suspension interface yoke and the payload support member. The integral angle measurement system includes a plurality of position sensors configured to measure a change in position between the suspension interface yoke and the payload support member.

Abstract: The invention relates to a vehicle seat having a suspension unit for cushioning the rolling and vertical suspension movements of the vehicle seat, wherein the vehicle seat has a vehicle seat upper part and a vehicle seat lower part, wherein the vehicle seat upper part and the vehicle seat upper part are connected by means of the suspension unit so that the vehicle seat upper part and the vehicle seat lower part are movable relative to one another, wherein the suspension unit comprises a scissor arrangement having a first scissor arm and a second scissor arm, characterised in that the suspension unit is rotatably connected about a first axis of rotation to the vehicle seat lower part and comprises a spring element support and a first spring element, the first spring element being connected on the one hand to the vehicle seat lower part and on the other hand to the spring element support which is rotatably connected about a second axis of rotation to the first scissor arm and rotatably connected about a third a

Abstract: An actuated, height adjustable optical table or workstation for use in microscopy, optical research laboratories and similar environments includes fixed and moving parts which combine to create a rigid, height adjustable table structure on which to mount an optical breadboard or similar platforms via optional passive or active vibration isolation mounts. The height adjustment is performed by multiple compact actuators with associated control hardware and software, and allows the user or an application system to perform activities with the table at any heights.

Abstract: A cardan joint includes a cross-elevation assembly comprising a cross-elevation housing, a roll-elevation assembly comprising a roll-elevation housing, a payload interface assembly comprising a payload interface housing, and a suspension interface yoke comprising a suspension interface that couples the suspension interface yoke to one or more suspension bars. The roll-elevation assembly is rotatably connected to the cross-elevation assembly along a first rotation axis via a radial roller bearing and a thrust roller bearing. The payload interface assembly is rotatably connected to the roll-elevation assembly along a second rotation axis via a radial roller bearing and a thrust roller bearing. The suspension interface yoke is rotatably connected to the cross-elevation assembly along a third rotation axis via one or more radial roller bearings and one or more thrust roller bearings.

Abstract: The present disclosure discloses a control method and device for automated guided vehicle, and automated guided vehicle. By utilizing the coupling relation between the turntable and the chassis, a disturbance to the chassis electromechanical control subsystem is compensated by using a feedback signal in the turntable electromechanical control subsystem, or a disturbance to the turntable electromechanical control subsystem is compensated by using a feedback signal in the chassis electromechanical control subsystem, so that high-precision movement control of the turntable and the chassis is realized.

Abstract: In a system for monitoring a vibration-isolated foundation, the system includes: an air pressure monitoring system for monitoring air pressure supplied to air mounts of the vibration-isolated foundation, wherein the air pressure monitoring system includes: a plurality of air ports configured to receive air to be supplied to the air mounts; a plurality of pressure sensors, each of the pressure sensors being configured to measure the pressure of the air supplied to a corresponding one of the air ports and to output the measured pressure as a sensing signal; a control unit configured to receive the sensing signal from each of the pressure sensors and to output a control signal according to a measured value of each of the pressure sensors; and a notification unit configured to operate according to the control signal of the control unit.

Abstract: A three-dimensional printing system that includes a nozzle and means for positioning the nozzle. The nozzle is configured to dispense a concrete mix. The means for positioning the nozzle may include cable and control systems. The cable system includes positioning cables that are connected to the nozzle. The control system includes control modules each connected to a different corresponding one of the positioning cables. Each of the control modules controls a distance that the corresponding positioning cable positions the nozzle from the control module. Alternatively, the means for positioning the nozzle may include first and second flying drones.

Abstract: A system for detecting and/or mitigating the effects of an obstruction on a surface of a sensor may include a surface configured to receive the sensor, and comprising a sensor window configured to provide a path through which the sensor senses the environment. The system may also include a vibratory actuator configured to facilitate vibration of the sensor window and a heating element configured to heat the sensor window. The system may further include an obstruction detection system configured to detect an obstruction, such as moisture, and an obstruction mitigation controller configured to initiate activation of the vibratory actuator and/or the heating element to mitigate the obstruction. The obstruction detection system may be configured to receive a signal from one or more sensors and detect the obstruction based at least in part on the signal.

Abstract: Methods, systems, and devices are described for mounting an antenna assembly to a vehicle, whereby rotational degrees of freedom between the antenna assembly and the vehicle are constrained. For example, an antenna mount may employ an intermediate structure between the antenna assembly and the vehicle. In various examples, the intermediate structure may be coupled with one of the vehicle or the antenna assembly by a linear coupling, and the intermediate structure may be coupled with the other of the vehicle or the antenna assembly by a planar coupling. The antenna assembly may be coupled with the vehicle by a compliant coupling that provides a centering force between the antenna assembly and the vehicle. According to various examples, rotational movement between the antenna assembly and the vehicle may be suppressed, and vibration from the vehicle to the antenna assembly may be attenuated.

Abstract: A data sampling and collection system in an oil drilling system includes a data acquirer installed in the measurement sub to transmit a sampling collector identification signal to one of a plurality of sampling collectors coupled to the data acquirer. Each sampling collector includes a sensor and a plurality of random access memory (RAM) pages to store sensor data received from the sensor. When one of the sampling collectors receives the enable signal from the data acquirer, a current RAM page currently receiving sensor data from the sensor continues to receive sensor data without interruption and an immediately preceding RAM page storing a last completed page of received sensor data is transmitted from the one sampling collector to a memory of the data acquirer and from there to a surface computing system. As such, recent data is retrieved and transmitted for processing without interrupting the continuous collection of sensor data.

Abstract: A measuring system comprises: a measuring transducer; transmitter electronics; at least one measuring tube; and at least one oscillation exciter. The transmitter electronics delivers a driver signal for the at least one oscillation exciter, and for feeding electrical, excitation power into the at least one oscillation exciter. The driver signal, has a sinusoidal signal component which corresponds to an instantaneous eigenfrequency, and in which the at least one measuring tube can execute, or executes, eigenoscillations about a resting position. The eigenoscillations have an oscillation node and in the region of the wanted, oscillatory length exactly one oscillatory antinode. The driver signal has, a sinusoidal signal component with a signal frequency, which deviates from each instantaneous eigenfrequency of each natural mode of oscillation of the at least one measuring tube, in each case, by more than 1 Hz and/or by more than 1% of said eigenfrequency.

Abstract: Systems and methods are provided for active vibration damping. One embodiment is a method for damping vibration in a mechanical system. The method includes detecting a vibration at a coupling of the mechanical system, generating a countervibration based on the detected vibration, and operating the mechanical system while generating the countervibration.

Abstract: A support for washing machine with automatic leveling function comprises: a sheath; a regulating mechanism, arranged in the sheath and axially movable relative to the sheath; and a flexible body assembly, which is arranged in the regulating mechanism and accommodates a hydraulic medium; one end of the flexible body assembly is limited and arranged in the sheath, another end is a stretchable end which acts on the regulating mechanism, the stretchable end expands and contracts under the action of the hydraulic medium and drives the regulating mechanism to move axially for automatic leveling. The flexible body assembly comprises a flexible accommodating body, a mounting, and a protection mechanism between the mounting assembly and the flexible accommodating body. The flexible body assembly is arranged in the sheath to avoid any damage, and the arrangement of the protection mechanism avoids the flexible accommodating body from directly contacting with the mounting assembly.

Abstract: A vehicle seat having a vehicle seat underbody, comprising: a base plate; a side horizontal suspension; a rolling suspension comprising a rod element rotatably mounted with respect to the side horizontal suspension; a scissors-type frame having a first swing and a second swing, wherein the first swing is connected by a first slide element to the rod element and the second swing is connected by a second slide element to the rod element and the first swing is connected to the first slide element and the second swing is connected to the second slide element; a first element carrier; a lengthwise horizontal suspension; and a first spring element, which is connected on the one hand to the first element carrier and on the other hand to the base plate or one of the swings.

Abstract: A gimbal sleeve for connecting to a camera gimbal may float between a floor surface and a ceiling surface of an aerial vehicle chassis such that the gimbal sleeve has freedom of motion in yaw, pitch, and roll directions relative to the vehicle chassis. The gimbal sleeve may comprise a pair of connection points to the lower dampers on a floor surface of the vehicle chassis. The gimbal sleeve may furthermore comprise a ball joint coupled to a back surface of the vehicle chassis. The connection points include spring forces that enable the gimbal sleeve to return to an equilibrium position in response to external vibrations and reduce the magnitude of vibrations transferred from the aerial vehicle to the gimbal and camera systems.

Abstract: The purpose of the present invention is to provide a charged particle radiation device capable of performing appropriate vibration suppression control in accordance with a device condition. To achieve the purpose, proposed is a charged particle radiation device provided with: a sample stage for supporting a sample irradiated with a charged particle beam emitted from a charged particle source; and a vacuum chamber for placing the atmosphere in which the sample is disposed in a vacuum state.

Abstract: A seat system for a vehicle includes a seat having a seat bottom on which a person can sit. An intermediate support structure is secured to the seat and the vehicle which allows the seat to rotate relative to the vehicle. An actuator can interact with the seat to cause the seat to rotate relative to the vehicle. The combined motion of the vehicle relative to the earth and the seat relative to the vehicle results in motion of the seat moving about a virtual pivot point. A user control is provided for adjustment of the location of the virtual pivot point.

Abstract: A vibration control system for a rotor hub provides vibration attenuation in an aircraft by reducing the magnitude of rotor induced vibratory. The system can include a force generating device attached to a rotor hub which rotates along with the rotor at the rotational speed of the rotor. Vibratory shear force is generated by rotating unbalanced weights each about an axis non-concentric with the rotor hub axis at high speed to create large centrifugal forces. The rotational speed of the weights can be a multiple of the rotor rotational speed to create shear forces for canceling rotor induced vibrations. The amplitude of the generated shear force is controlled by indexing the positions of the unbalanced weights relative to each other, while the phase of the shear force is adjusted by equally phasing each weight relative to the rotor.

Abstract: A stopper portion includes a first protruding portion protruding from the end face of the first attachment portion closer to the outside in the main load input direction toward the outside in the main load input direction; and a second protruding portion protruding from the end face of the first attachment portion closer to the outside in the main load input direction toward the outside in the main load input direction, being spaced apart from the first protruding portion so as to be in a non-contact state with the first protruding portion, being thinner than the first protruding portion in the main load input direction, and having a protruding end in which a distance between the protruding end and the contact surface is longer in the main load input direction than a distance between a protruding end of the first protruding portion and the contact surface.

Abstract: An active vibration isolation system for a motor vehicle seat that is adapted to be occupied by a user, includes an active suspension system that supports the seat above a floor of the motor vehicle, where the suspension system comprises at least one actuator that can be controlled to move the seat up and down in the direction of a vertical axis, a first sensor system mounted to the vehicle and that is adapted to sense vehicle height position changes along or parallel to the vertical axis, a second sensor system that is adapted to determine the seat translational position along or parallel to the vertical axis, and a controller that, in response to the first and second sensor systems, is adapted to provide control signals to the active suspension system that cause motions of the seat that are designed to control the height of the user's head or torso as the vehicle undergoes translations along the vertical axis.

Abstract: It is to be understood that the methods and apparatus which have been described above are merely illustrative applications of the principles of the invention. Numerous modifications may be made by those skilled in the art without departing from the true spirit and scope of the invention.

Abstract: Provided is a dynamic force generator having a supporting shaft, a first rotor including an internal bore housing the supporting shaft and bearings arranged between the supporting shaft and the internal bore so that the first rotor is mounted rotatably in relation to the supporting shaft, an external bore having an inner face provided with a first set of permanent magnets. A first unbalanced mass is within the internal bore of the first rotor and mounted opposite an outer face of the external bore of the first rotor. A second rotor is mounted rotatably in relation to the first rotor, via an antifriction component provided between the first rotor and the second rotor, and includes an internal bore housing the internal bore of the first rotor so that the internal bores of the first and second rotors are concentric, and an external bore with a second set of permanent magnets.

Abstract: A lithographic apparatus comprises a base frame constructed to form a supporting structure of the lithographic apparatus, an active base frame support arranged between the base frame and a ground floor. The active base frame support is configured to support the base frame on the ground floor. The active base frame support comprises an actuator configured to exert a force in a horizontal direction between the base frame and the ground plane. The lithographic apparatus further comprises a control device configured to drive the actuator, a signal representative of a disturbance force on the base frame being provided to the control device, the control device being configured to drive the actuator using the force sensor signal.

Abstract: A method of characterizing a signal, the method including acquiring a signal; and determining a vibration rating of a portion of the signal; determining a level of variation of a portion of the signal; and determining information characterizing the signal by applying a function that takes as arguments the vibration rating and the level of variation.

Abstract: In some embodiments, apparatuses and methods are provided herein useful to monitoring and reconciling inventory.

Abstract: Normally, a phase fixed control is executed. In the event that a vibration value VAPP of an engine becomes greater than or equal to a predetermined vibration value VAPP_th, a first phase of an active vibration generated by a first actuator and a second phase of an active vibration generated by a second actuator are changed in mutually opposite directions.

Abstract: A suspension cable robot is provided, its stability can be improved by using at least three groups of three cables arranged in a parallelogram manner. The ability to remain stable when subjected to forces acting on the robot platform or end effector is thereby significantly increased.

Abstract: A vibration reduction device for a vehicle seat that can reduce forward/backward vibration when the vehicle is stopped with the engine idling. The vibration reduction device includes a weight mounted through an elastic body in the seat back or the headrest of the seat.

Abstract: A polar axis calibration system (100) comprises: a polar scope (10), a polar axis calibration control device (20) and a display device (30). The polar scope comprises an optical lens (11) and an image sensor (12) for collecting constellation images (IM); the polar axis calibration control device receives the constellation images from the polar scope and determines the position (P1) of the rotation center of the polar axis and the celestial pole position (P2), the position of the rotation center of the polar axis means the position of the rotation center (R0) of the polar axis (510) of the equatorial instrument in the plane of the constellation image, and the celestial pole position means the position of the celestial pole in the plane of the constellation image; and the display device is coupled to the polar axis calibration control device and used to display the constellation image, the celestial pole position and the position of the rotation center of the polar axis.

Abstract: Apparatus, method and computer program for use in generating a three dimensional image. A three dimensional image volume comprising a three dimensional image is displayed using a visualization device in a way that the position and orientation of an input surface is visible within the three dimensional image volume. User input indicative of a two dimensional image provided in the plane of the input surface is received via the input surface. First positional data indicative of a relative position and orientation of the input surface in relation to the three dimensional image volume is then determined. Subsequently, the three dimensional image is modified to include a three dimensional representation of the two dimensional image, the three dimensional representation having a position and orientation within the three dimensional image volume determined from the first positional data.

Abstract: The invention relates to an adjustable damping system for a vehicle seat for damping a movement of the seat part-side upper part relative to the body-side lower part in at least one spatial direction, wherein, for damping, at least one damping element is provided, which is adjustable by an adjustment device and is arranged between the seat part-side upper part and the body-side lower part.

Abstract: Vibration damping device comprising two frames and an elastomer body that connects frames together and which delimits a first hydraulic chamber that communicates with a second hydraulic chamber that can be deformed by a constricted passage. An electromagnetic actuator, that controls the vibration damping behavior of the device, comprises a a permanent magnet holding machanism.

Abstract: Disclosed are active vehicle seat assemblies, methods for making and using such seat assemblies, and vehicles with active seat assemblies for counteracting unwanted inertial forces. An active vehicle seat assembly is disclosed that includes an occupant chair with interconnected seat and backrest portions. A motion sensor detects motion of the occupant chair and outputs signals indicative thereof. An automated platform movably mounts the occupant chair to the vehicle body. The platform includes: a pitch plate that pivots about two lateral axes; a pitch actuator that selectively pivots the pitch plate; a roll plate that pivots about two longitudinal axes; and a roll actuator that selectively pivots the roll plate. An on-board controller responds to signals from the motion sensor indicative of inertial motion disturbances to the chair by transmitting control signals to the pitch and/or roll actuators to pivot the pitch and/or roll plates to thereby counteract the inertial disturbances.

Abstract: A lithographic apparatus comprising: a positioning stage (WT); an isolation frame (300); a projection system (PS), comprising a first frame (210); a second frame (220); a supporting frame (10) for supporting the positioning stage; a first vibration isolation system (250) and a second vibration isolation system (270), wherein the supporting frame and the first frame are coupled via the first vibration isolation system; a stage position measurement system (400) to determine directly the position of a stage reference of an element of the positioning stage in one or more degrees of freedom with respect to an isolation frame reference of an element of the isolation frame; and wherein the first frame and the isolation frame are coupled via the second vibration isolation system.

Abstract: Apparatus and methods to reduce unwanted motion in a payload of a precision instrument are described. The payload may be supported by an intermediate mass. A feedback signal based upon sensed motion of the intermediate mass may be applied to an intermediate-mass actuator arranged to drive the intermediate mass. Additionally, a feedforward signal may be applied to a payload actuator arranged to drive the payload and used to suppress unwanted motion of the payload. The feedforward signal may be derived from a source within the apparatus or external to the apparatus that would otherwise cause unwanted motion of the payload.

Abstract: A first electronic device is positionable between one or more contact positions and an aligned position with respect to a second electronic device. One or more actuators of the first electronic device are activated in response to one or more sensors of the first electronic device determining that the first electronic device and second electronic device are misaligned. Activation of the actuator may result in the first electronic device moving to the aligned position. In some implementations, the actuator may move the first electronic device toward the aligned position when activated. In other implementations, the actuator may overcome static friction to put the first electronic device in motion when activated and when the first electronic device is in motion one or more alignment mechanisms may overcome the kinetic friction to move the first electronic device to the aligned position.

Abstract: The invention relates to a vehicle cab or a vehicle seat comprising an upper part and a lower part which are vertically spring-mounted relative to one another by means of at least one height-adjustable scissor-action frame comprising two scissor arms which are pivotable about a common axis, and at least one air spring having a variable air volume, it being possible for movements of the scissor-action frame to be transmitted to a switching element, by means of a transmission element that is mechanically operatively connected to the scissor-action frame, in order to control the air volume of the air spring, wherein a height-adjustment device for the scissor-action frame, comprising a manually actuable control lever element and a guide element that is mechanically operatively connected thereto, the switching element being able to be pivoted about a first axis of rotation and the transmission element being able to be pivoted about the first axis of rotation in the opposite direction to the switching element by me

Abstract: A control circuit includes a first input coupled to a power source, a second input coupled to an output of a power supply, and an output coupled to an input of the power supply. The control circuit senses current at the power supply output. If the sensed current exceeds a threshold, the control circuit connects the power supply input to the power source. If sensed current does not exceed the threshold, the control circuit disconnects the power supply input from the power source and applies a voltage to the power supply output. If the sensed current exceeds the threshold while the power supply input is disconnected from the power source and while the control circuit is applying voltage to the power supply output, the control circuit discontinues application of voltage to the power supply output and connects the power supply input to the power source.

Abstract: A support assembly for a gas turbine engine includes at least one inner support that extends about a circumferential axis and defines a cavity for receiving a control ring. At least one cover plate is attached to at least one inner support to enclose the cavity. At least one of the inner support and the cover plate includes a rail and the other of the inner support and the cover plate includes a groove for engaging the rail.

Abstract: A support assembly for a gas turbine engine includes a control ring that extends about a circumferential axis. A plurality of first supports has a cavity that receives the control ring. A plurality of cover plates are attached to the first plurality of supports and enclose the cavity.

Abstract: A microsystem includes a base layer formed from an electrical insulating material. The base layer has an inner surface defining a cavity and an external surface opposed to the inner surface, and in direct communication with an environment. A cap layer and a microelectromechanical (MEMS) device layer are formed from electrical insulating material or an other electrical insulating material. The cap has an inner surface defining a cavity, and an external surface opposed to the inner surface, and in direct communication with the environment. A MEMS device on/in the MEMS device layer is disposed between the base and the cap. Respective adjacent portions of the base, the cap and the device substrate are bonded to define an enclosed space. The enclosed space at least partially includes the base cavity or the cap cavity. At least a portion of a MEMS device on the device layer is in the enclosed space.

Abstract: A positioning apparatus mounted with at least one linear axis or axis of rotation and a robot on a base and mounted with vibration isolators and the robot includes vibration isolators that are capable of seating and suspending the base and a controller that controls suspension and seating of the vibration isolators in accordance with an operating condition of the robot.