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WO/2000/039480A1 |
A system for enhancing vibration reduction in a vehicle that utilizes one or more sensors which sense ambient vibration in the vehicle and generate a signal corresponding to the sensed vibrations. A control circuit is coupled to the sens...
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WO/2000/020306A1 |
A mechanism for driving a vibratory-type conveyor system which relies on the known principles of superimposition of simple harmonic oscillating forces, but enables the operation of such a system in the absence of mechanical interconnecti...
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WO/1999/047888A1 |
The invention relates to a mechanical oscillator (100) having an oscillating body (106, 114) which can be excited to carry out a forced oscillation. Said oscillator comprises a device (125) which allows for easy stabilising of the amplit...
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WO/1999/036695A1 |
The invention relates to a method for measuring and controlling oscillations in a wind turbine wherein the wind turbine control system is adapted by means of spectrum analysis, to determine the existence and amplitude of vibrations of th...
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WO/1999/028218A1 |
The control system is particularly usable with extended vibration conveyors and permits the installation of multiple vibratory drive units (18, 20) comprised of one or more vibratory modules. Each module comprises a motor (34, 42), one o...
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WO/1999/026120A1 |
The columns (48) of an aligner are placed on a surface plate (20). Actuators (46A-46D) are provided between the surface plate (20) and the leg parts (48a-48d) of the column (48). Acceleration sensors (50A-50D and 52A-52D) are attached to...
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WO/1998/010258A1 |
The present invention pertains to a method of capacitive stimulation of an oscillator control in sensors used for capacitive measurement of strengh, acceleration and especially rotation speed based on the Coriolis principle. In this meth...
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WO/1998/006960A1 |
A single-axis active vibration reducing system for reducing vibrations in an object (12) in a single axis (20). The vibration isolation system enables the sensing (48) of motion of the center of mass (28) of an object (12) along a single...
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WO/1997/008438A1 |
The invention concerns a system for actively reducing rotational non-uniformity of a shaft (10), in particular the drive shaft of an internal-combustion engine or a shaft which is coupled, or can be coupled, to the drive shaft. The syste...
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WO/1997/007590A1 |
A mechanical vibration detector which can pick up mechanical vibration with a high level of accuracy and can be easily adjusted, and a vibration damping controller capable of accomplishing damping of mechanical vibration. A motor control...
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WO/1997/003386A1 |
A controlled system is preset as a controlled model having mechanical looseness between an actuator and a movable section. The value of a frequency weight function by which the sensitivity function expressing the target position follow-u...
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WO/1996/034154A1 |
A pitching damping device for a construction machine that can provide an effective vibration damping action by suppressing pitching without making a vehicle body larger. To this end, a gyrostabilizer (10) mounted on an upper swinging bod...
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WO/1996/032623A1 |
An improvement to a phase controlled mechanical oscillator (111) consists of a balancing network (150) which generates a feedback signal from two different input signals with adjustable weights. One of these input signals is directly der...
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WO/1996/023248A1 |
Known drive circuits for vibration conveyors control the supplied power by means of a variable transformer or phase control regulation. The conveyors are mechanically tuned to the mains frequency or double the mains frequency. Disadvanta...
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WO/1995/033419A1 |
An electric toothbrush (26) includes a motor (30) and a mechanical oscillator (32) for driving a brush head assembly (24) at high frequencies. The brush head assembly (24) attaches to the mechanical oscillator (32). A motor (30) drives t...
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WO/1995/027573A1 |
A device for cleaning dirty objects, for example dirty textiles or dishes, is characterized by a fluid-proof housing (8) immersible in water together with the dirty objects and made to vibrate by means of drive mechanisms (12; 46). The v...
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WO/1995/022789A1 |
A device for suppressing vibration of a working machine in which residual vibration produced immediately after an operation is completed can be suppressed well without deteriorating the response. The device comprises working machine acce...
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WO/1995/020705A1 |
A method and apparatus for structural deflection control, as well as associated sequential controls that are based on new control laws. The apparatus of this invention is of relatively low cost and performs better than prior art devices....
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WO/1994/021403A1 |
This invention aims at reducing the vibration occurring during a motion of a vacuum transfer apparatus in a transfer press, and prevent the misfeeding of a work. To achieve this object, accelerometers (30, 32) are set on a crossbar (21) ...
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WO/1994/019732A1 |
The invention relates to a device for reducing oscillations of a robot. An acceleration pattern is subjected to Fourier transform to provide a power spectrum distribution. A component of a resonant frequency (fn) is removed from the powe...
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WO/1993/007548A1 |
A compressor unit (1) comprises a compressor (2) of the resonant-piston type and an oscillating motor (3) for driving a compressor (2). Furthermore, the compressor unit (1) includes a control device (30) for energizing the oscillating mo...
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WO/1993/002462A1 |
The invention relates to a resonance reducing arrangement for a device displaceable between two positions. In one described embodiment the device (14) is displaced against the resilience of a spring (11) by causing an electrical device (...
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WO/1992/022861A1 |
A resonance vibratory system for materials handling and processing comprises a surface resiliently mounted for vibration, means to measure the vibratory displacement of the surface, means to provide a signal to a driving device to mainta...
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WO/1992/021840A1 |
A vibration control device for structures, which constitutes a double action vibration absorber of positive control type by providing a driving member of a predetermined mass mb as a second added mass body relative to a first added mass ...
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WO/1992/021841A1 |
A vibration control device for structures, which constitutes a double action vibration absorber of positive control type, in which a structure made of concrete or steel and having a room therein is placed on the top portion of a building...
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WO/1992/020482A1 |
An active vibration control device for controlling vibration in a cantilevered member (12) and a method for the same are disclosed. The device is comprised of a cantilevered member (12) having a longitudinal axis (13) comprising a sensor...
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WO/1992/014195A1 |
Oscillation is suppressed by a state feedback in which a special filter is applied to the amount of twist and the speed of twist of a control object such as a robot that has a low-frequency oscillation system. The amount of twist epsilon...
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WO/1992/011814A1 |
A method and apparatus for operating on the human eye detects changes in load, more specifically, mechanical impedance, of the transducer (300) and controls aspiration based on the load changes. A change from a lower load to a higher loa...
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WO/1991/008842A2 |
In an unbalanced mass vibration generator in which the unbalance can be varied (202, 204, 205, 254) during operation, the unbalanced masses are divided into partial unbalanced bodies (214, 216, 218, 220) which can be adjusted in the peri...
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WO/1991/006439A1 |
The invention relates to a process and a device for chassis control in vehicles. The reference shock absorber force (reference value) for at least one adjustable shock absorber with a piston with damped flow resistance is derived from at...
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WO/1991/003780A1 |
A method of controlling a robot, by which the robot can be prevented from causing vibration arising from low rigidity thereof. A processor in a digital servo circuit cyclically performing loop processing of position, speed, and electric ...
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WO/1990/013108A1 |
An active sound or vibration control system for compensating noise or vibration arising from a periodic source of changing periodicity, wherein sensors (6) sense the existing noise and vibration, the sensor signals are sampled several ti...
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WO/1990/003009A1 |
A sequence of impulses is determined which eliminates unwanted dynamics of a dynamic system. This impulse sequence is convolved with an arbitrary command input to drive the dynamic system to an output with a minimum of unwanted dynamics....
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WO/1989/001655A1 |
A servo loop control for the dither drive of a Coriolis rate sensor is provided. The dither drive includes a pair of electromagnetic coils (70), which are alternately energized to dither a parallelogram frame (50), on which first and sec...
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WO/1987/006693A1 |
A solid state power amplifier for driving a shaker. The amplifier is comprised of a circuit which generates a pulse-width modulated drive signal for driving an armature of a shaker. The circuit includes an oscillator (91) (92) (93), powe...
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WO/1981/000237A1 |
A vibration controller for a vehicle, which incorporates cylinders (4A), (4B) for suppressing the vertical vibration of an automotive body (1) and a cylinder (4C) for suppressing the lateral vibration provided in parallel with springs (3...
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JP7477670B2 |
Apparatus and methods to reduce unwanted motion in precision instruments are described. An active vibration-isolation system may include a feedback loop that senses motion of an intermediate mass. In noisy environments, where the feedbac...
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JP2023112721A |
To provide a mobile robot, a vibration damping method for the mobile robot, and a program that can more effectively reduce vibrations occurring in an environment sensor.A mobile robot comprising a robot body and a moving mechanism config...
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JP7306926B2 |
To provide a vibration testing device capable of applying vibration to a test piece according to a test condition.A vibration testing device 1 comprises: a vibration excitor E which applies vibration to a test piece D; and a controller C...
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JP7225210B2 |
Apparatus and methods to reduce unwanted motion in precision instruments are described. An active vibration-isolation system may include a feedback loop that senses motion of an intermediate mass. In noisy environments, where the feedbac...
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JP7197774B2 |
To determine whether a phase error adaptive control system for vibration transfer characteristics is within a stable range from behavior of vector re-convergence when an integrated value manipulated variable is intentionally imparted to ...
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JP2022186428A |
To provide a vibration control device and a moving robot capable of changing damping characteristics with a simple structure.A vibration control device is equipped with an actuator that has a ball spring and a motor, a holding portion th...
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JP7023121B2 |
This active anti-vibration device (A) is provided with: a stage (4) for positioning a mounted object (S); an anti-vibration base (1) supporting the stage (4); a servo valve (24) which provides the anti-vibration base (1) with a control f...
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JP6975659B2 |
It is a subject to provide a vibration control system and a washing machine that can appropriately control vibration of an object with a low cost. The present invention is characterized in that the invention includes a linear actuator (1...
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JP2021181976A |
To improve control of an electromechanical actuator.The present invention relates to a control method for an electromechanical actuator (101). The method comprises determining a voltage (U) applied to the actuator (101) by superimposing ...
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JP6951977B2 |
This disclosure relates to a drivable working machine, including a vehicle, a concrete placing boom that can be rotated on a vehicle-fixed carrying structure by means of a slewing gear, and a plurality of supporting legs arranged on the ...
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JP2021122770A |
To provide a self-oscillator that can achieve fine processing control by enabling cutting depth to be changed even in cutting subjected to a constant pressing force, by controlling oscillation amplitude so as to change processing efficie...
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JP6913571B2 |
To predict a vibration mode of a building corresponding to a peripheral event with high accuracy.A sensor data acquisition part 24 acquires sensor data outputted by a sensor installed in a building of a prediction object. An event inform...
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JP2021026323A |
To obtain a control unit capable of suppressing the lowering of damping effects of the control unit due to an update delay of frequency information.A control unit 10 generates a command signal for drive-controlling a vibration applying u...
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JP2021017914A |
To suppress effective vibration in a specified frequency band area while holding the stiffness of a vibration isolation pedestal.An active-type vibration control device comprises: a vibration detection sensor 3a for detecting the vibrati...
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