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| Number | Title | Issue Date |
| 7602135 | Arrangement having at least one movable furniture part An arrangement having at least one movable furniture part, in particular having a drawer or the like, having at least one drive unit and at least one regulating device for regulating the at least one drive unit, wherein the arrangement (7) has at least one, p... | 10/13/2009 |
| 7423393 | Car control method and car control apparatus A car control apparatus including a wheel sensor, wheel torque calculating means for calculating wheel torque from the wheel speed, drive force detecting means for detecting drive force generated by an electric motor, car body drive force calculating means for calcu... | 09/09/2008 |
| 7245103 | Motor speed and position control A method of controlling the speed and position of a motor includes receiving a pulse train indicative of the speed of the motor, and a periodic signal at a frequency greater than the pulse train. The number of cycles of the periodic signal per cycle of the pulse tra... | 07/17/2007 |
| 7202956 | Translation mechanism for opto-mechanical inspection An apparatus is disclosed for moving an optical component of an opto-mechanical inspection system relative to an object to be inspected using a linear actuator comprising a coil located in a magnetic field created by a magnet assembly. A translation stage is coupled... | 04/10/2007 |
| 7196489 | Rotary shaft control apparatus The invention aims to suppress or prevent the vibration that can occur due to the intervention of a low-rigidity part between detector and rotating body. An angular acceleration sensor for detecting the rotational angular acceleration of a rotating body is provided,... | 03/27/2007 |
| 7187148 | Controller Disclosed is a controller for restraining vibration of a driven element driven by a servomotor. The driven element driven by the servomotor is provided with acceleration detecting means. A correction value is obtained by multiplying a detected acceleration value det... | 03/06/2007 |
| 6940248 | Motion controlling Motion controlling includes a combining network having an acceleration input for receiving an acceleration signal representative of acceleration of a movable element and a position input for receiving a position signal representative of position of the movable eleme... | 09/06/2005 |
| 6876168 | Disturbance attenuation in a precision servomechanism by a frequency-separated acceleration soft sensor In servomechanisms, like for example used in disk drives, disturbances, for example, friction, shock and vibration, prevent the system positioning accuracy from further improvement. These disturbances occur in a relatively low-frequency range compared to the electri... | 04/05/2005 |
| 6876167 | Method and apparatus for determining the rotational rate of a rotating device A non-invasive apparatus and method for measuring the speed of a rotating device that includes a sensor that measures a dynamic characteristic of the rotating device. A sample of the signal is transformed from the time domain into a frequency spectrum. The frequency... | 04/05/2005 |
| 6684132 | Active anti-vibration apparatus and exposure apparatus This invention relates to an active anti-vibration apparatus having an anti-vibration table on which a stage is mounted. This anti-vibration apparatus includes a pneumatic spring actuator for supporting and driving the anti-vibration table, a PI compensat... | 01/27/2004 |
| 6597145 | Motion controlling Motion controlling includes a combining network having an acceleration input for receiving an acceleration signal representative of acceleration of a movable element and a position input for receiving a position signal representative of position of the mo... | 07/22/2003 |
| 6513958 | Vehicle lamp system A vehicle lamp system 1 having a leveling mechanism 2 for controlling the posture of a reflector RF and a stepping motor 3 as a driving source of the leveling mechanism. The lamp system has a detector 5 which may determine whether an external force, such ... | 02/04/2003 |
| 6462501 | Motor controlling method and apparatus When a movement destination P is designated, a switching time t1 when the movement is switched from acceleration to constant-speed-movement and a switching time t2 when the movement is switched from the constant-speed-movement to dec... | 10/08/2002 |
| 6128552 | Anti-vibration apparatus and method An anti-vibration apparatus has a feedback loop based on vibration information from an anti-vibration table, and a feedforward loop based on vibration information from a setting foundation. A compensation mechanism in the feedforward loop uses an adaptive... | 10/03/2000 |
| 5801507 | Acceleration sensor An acceleration sensor includes a first acceleration sensor and a second acceleration sensor both disposed neither parallel to the plumb plane nor perpendicularly to the plumb plane, wherein the first acceleration sensor and the second acceleration sensor... | 09/01/1998 |
| 5545962 | Positioning system A positioning system includes a plurality of actuators for driving an object to be positioned, a plurality of current output type amplifiers for amplifying drive signals from the actuators and for producing drive currents corresponding to the drive signal... | 08/13/1996 |
| 5418442 | Method of and an apparatus for detecting an angular velocity of a motor and for controlling the same The present invention is directed to a method of and an apparatus for detecting an angular velocity and a rotation angle of a rotary member and for controlling a motor disposed to drive the rotary member. In the present invention, first and second acceler... | 05/23/1995 |
| 5385217 | Vibration eliminating apparatus for elminating vibration of an installation floor A vibration eliminating apparatus for eliminating vibration suspends a floor board from an installation floor. A supporting electromagnet is provided on the installation floor in order to suspend a magnetic member fixed to the floor board by a magnetic fo... | 01/31/1995 |
| 5336983 | Accelerometer and angular accelerometer An accelerometer includes a main body, a displacing member, a scale, and a detecting unit. The displacing member is attached to the main body and has a displacing portion displaced relative to the main body at least in a direction of acceleration measurem... | 08/09/1994 |
| 5272424 | Generating device of phase current instruction value for alternating current servomotor and the generating method thereof A generating device of a phase current instruction value for an A.C. servomotor and the generating method thereof, drives a synchronous A.C. servomotor. A sine wave, namely, a phase current instruction value for commutation of the A.C. servomotor driver c... | 12/21/1993 |
| 5261026 | Controlling apparatus for balanced cargo or work handling system A controlling apparatus for use in a balanced work or cargo handling system which aims at detecting the weight of the work or cargo suspended accurately even if a drift occurs in an acceleration detector due to changes in ambient temperature to thereby en... | 11/09/1993 |
| 5055759 | Servo accelerometer A servo accelerometer includes a pendulum, a coil, a detection unit, and a servo unit. The detection unit has a photopotentiometer for receiving light passing through a slit of the pendulum and outputting a detection output on the basis of a change in res... | 10/08/1991 |
| 4910446 | Coordinate positioning apparatus A three-coordinate measuring machine has a probe (22) connected to an output member (11). A driving system (10) is made up of three carriages (15, 17, 19) on guide rails (14, 16, 18). In parallel with this, there is provided a driven system (20) made up o... | 03/20/1990 |
| 4806835 | Electromagnetic device for reducing vibration in a rotary machine fitted with fluid bearings The electromagnetic device comprises at least one compensation ring placed in the vicinity of the fluid bearing and mounted relative to the rotor by means of an active radial magnetic bearing whose electromagnet windings are powered as a function firstly ... | 02/21/1989 |
| 4716347 | Oscillation reducing apparatus for rotary compressor In a rotary compressor provided with a motor to be controlled by an inverter, the power-supply frequency or impressed voltage during one rotation of the induction motor is varied in accordance with the changes in the load torque to make the production tor... | 12/29/1987 |
| 4651075 | Servoed accelerometer having isolated voltage torquing and method Servoed accelerometer with isolated voltage torquing having first and second grounds, a servoed accelerometer having a torque coil, and an amplifier for driving said torque coil. The amplifier has inverting and non-inverting junctions. The second ground i... | 03/17/1987 |
| 4481588 | Method and apparatus for adjusting installation position of switch members in numerical control system A method and apparatus for adjusting the positions of switch members such as a deceleration limit switch installed on a machine tool in a numerical control system for controlling the machine tool on the basis of numerical control data and for executing pr... | 11/06/1984 |
| 4398418 | Three-axis accelerometer having improved magnet configuration A proof mass for an accelerometer is electromagnetically constrained in three orthogonal directions. An array of filaments forms an elastic suspension for the proof mass to constrain it in the remaining degrees of freedom. The resulting instrument has the... | 08/16/1983 |
| 4372162 | Three-axis accelerometer having dynamic bias compensation A proof mass for an accelerometer is electromagnetically constrained in three orthogonal directions. An array of filaments forms an elastic suspension for the proof mass to constrain it in the remaining degrees of freedom. The resulting instrument has the... | 02/08/1983 |
| 4353254 | Control circuit for electro-static accelerometer An electro-static capacitive accelerometer is a square law device and includes two fixed plates and an intermediary movable plate. A control circuit detects unbalances in the accelerometer, due to acceleration, and generates a signal which induces a corre... | 10/12/1982 |
| 4305028 | System for evaluating the capability of a work-performing robot to reproduce a programmed series of motions A system for evaluating whether a work-performing robot can perform a series of programmed motions is disclosed which includes means for continuously comparing the velocity of the various links of a robot simulator, which is manually moved through the seq... | 12/08/1981 |
| 4221995 | Linear motor drive system for continuous-path closed-loop position control of an object A precision numerical controlled servo-positioning system is provided for continuous closed-loop position control of a machine slide or platform driven by a linear-induction motor. The system utilizes filtered velocity feedback to provide system stability... | 09/09/1980 |
| 4144764 | Servo amplifier for an electrically damped accelerometer A servo amplifier system for an accelerometer includes a torque coil. A torque coil is included in the output circuit of a first amplifier. A position sensor circuit develops a signal corresponding to the position of the coil which is applied to the input... | 03/20/1979 |
| 3979090 | Velocity damped erection system for stable gyroscopic attitude and heading reference apparatus An improved second order gyroscopic attitude and heading reference system including separate variable time constant accelerometer integrators for independently controlling the velocity error signals associated with respective east and north acceleration s... | 09/07/1976 |
