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JP2002113420 |
To solve the strain of an excitation waveform in a controlling device for a shaker, in which a displacement feedback loop is constituted of an LVDT displacement sensor.In the controlling device for the shaker, in which the displacement a...
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JP3297024 |
To realize a particularly improved vibration compensation by providing a characteristic completely compensating a frequency variation of a vibration in the case where the frequency rapidly varies. A trigger mechanism including at least o...
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JP3296973 |
To remove vibrations satisfactorily even in vertical direction. A magnetic levitation vibration resistant device is composed of a table equipped with a flat plate made of a magnetic substance and an electromagnetic actuator 12 which exer...
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JP2002108459 |
To solve the problem that the center frequency of a notch filter does not match a machine resonance frequency any more and machine resonance can not be suppressed in the case the machine resonance frequency changes by heat, etc., in the ...
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JP3294314 |
PURPOSE: To improve follow-up quality and convergency relating to a changing system by calculating external signals of showing an engine operative condition in an electronic control unit, and continuously changing an updated correction a...
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JP3294340 |
PURPOSE: To enable desired vibration decrease even in the case of the so-called causality being unmaterialized. CONSTITUTION: The filter coefficient of a first W-filter 15 updated by a control signal updating means 17 is copied to a seco...
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JP3292547 |
PURPOSE: To prevent damage of a tank or a pump by preventing propagation of vibration of a submerged pump, and extract sludge from a sludge stored tank having no sludge extracting equipment. CONSTITUTION: A submerged pump vibration preve...
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JP3292505 |
PURPOSE: To enhance vibration-isolating performance, facilitate assembly of actuators, etc., by detecting vibration in horizontal direction of an object to be controlled supported by air springs and, based on the detected results, applyi...
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JP2002089619 |
To provide a control system that forms a vibration control loop of an active vibration resistant device not for each conventional mode of motion but for each mode of vibration, and establish a calculating method that shortly and precisel...
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JP2002089620 |
To exert an effective vibration damping action even on a small vibration having a small relative amplitude between a vibration-damped object and a bed by controlling voltage application to an electro-viscous fluid and effectively damping...
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JP3282302 |
PURPOSE: To provide a vibrator or vibration damping device of six degrees of freedom capable of accurately vibrating or in the X-, Y- and Z-axis direction of a surface plate and the Xθ, yθ- AND zθ-directions of a rotary shaft. CONSTIT...
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JP2002060041 |
To provide a method and apparatus for controlling a piezoelectric vibrating parts feeder capable of effecting accurate vibration by means of a simple arrangement.The apparatus includes a piezoelectric vibrator 16 which vibrates at a pred...
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JP3281875 |
To provide a vibrating table waveform control apparatus and method capable of making a desired wave coincide with a reproduced wave through one excitation and being applicable to a vibration test in which the characteristic of a vibratin...
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JP3278069 |
PURPOSE: To automatically correct the deviation of a hydraulic actuator from a specific stand-by position by measuring and finding the deviation of the hydraulic actuator in a stand-by mode from the specific stand-by position as an offse...
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JP2002048184 |
To provide an anti-vibration system which enables an enhancement of accuracy of measurement with measuring apparatus, without causing increase in equipment cost.Oscillation of a measuring apparatus is inputted from measuring apparatus si...
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JP3276214 |
PURPOSE: To reduce vibration of air inside a vehicle as well as vibration of a solid element of the vehicle by detecting the vibration of the solid element of the vehicle as well as the vibration of the air inside the vehicle, and direct...
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JP3275449 |
PURPOSE: To enable noise reduction effect and vibration reduction effect to be obtained in wide frequency band, even if controllable frequency of a controlled sound source and a controlled vibration source is narrow. CONSTITUTION: A cran...
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JP2002031187 |
To stably support a vibration resistant table so that a vibration resistant device is isolated from external vibration surely.This vibration resistant device is provided with a vibration resistant table 10, magnetic levitation devices 31...
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JP3269223 |
PURPOSE: To eliminate the resonance of a vibration detector by setting the resonance frequency band of the detector and the resonance frequency band of the motor in separate bands. CONSTITUTION: An ultrasonic motor 5 is provided at a pho...
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JP3270672 |
To exhibit damping force characteristics the same as specified by its target by adjusting the damping force of a damping force variable shock absorber by the use of a signal comparatively easy to be detected such as relative speeds and r...
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JP3265793 |
PURPOSE: To suppress that control is diffused and to execute stable vibration reduction control. CONSTITUTION: Necessary control force FREQ required for dissolving vibration is estimated based on the number of engine revolution (step 202...
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JP3265715 |
PURPOSE: To prevent an increase in arithmetic load at the time of low-frequency vibration and high-frequency noise input and deterioration in control precision at the time of high-frequency vibration and high-frequency noise input withou...
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JP2002002542 |
To protect a distortion actuator 32 by preventing voltage his her than a predetermined value from being applied to the distortion actuator 32.When a vibration detected by a vibration detecting means 31 exceeds a certain value, a portion ...
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JP2001355669 |
To provide a vibration resistant device of a simplified device construction preventing accumulation of steady deviations and showing a sufficient vibration control performance.A summation signal of an output from a first order low pass f...
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JP2001332477 |
To sufficiently isolate vibration even in a high-frequency threshold.This active vibration isolation device is equipped with an actuator that has an air spring for giving force to an object whose vibration is to be isolated, a pressure d...
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JP3255449 |
PURPOSE: To achieve reduction of vibration and noise which corresonds to sensing of the vibration and noise by a driver and occupants in performing active control of vibration and noise of a vehicle using error scanning method. CONSTITUT...
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JP2001321902 |
To reduce striped defect on a cast slab by impressing moltensteel with an amplitude modulation magnetic field having vertical vibration of a mold and the same frequency signal wave to overcome the surface wave motion generated by the mol...
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JP2001317584 |
To provide an economically excellent active vibration damping device capable of exhibiting an excellent vibration damping effect even on vibration of microamplitude unrealized by a conventional vibration damping device and capable of dam...
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JP2001312302 |
To provide an active damping method capable of effectively performing damping not only to oscillations caused by the natural frequency of a controlled system but also to oscillations caused by other external disturbances.Concerning the a...
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JP2001304332 |
To provide an active vibration damping device, of a compact constitution capable of rapidly damping rotational vibration, such as pitching, rolling and yawing. This active vibration damping device is installed at a vibration isolating ta...
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JP3244184 |
PURPOSE: To improve torsional vibration-proof performance and transient characteristics by employing disturbance torque estimated through an equivalent disturbance torque estimating mechanism in the configulation of an observer under low...
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JP3240726 |
PURPOSE: To automatically adjust the carrying speed of a goods in an optimum condition, and stably carry or supply the goods to a machine. CONSTITUTION: Parts such as bolts are fed from a parts storing part 6 of a parts feeder 1 to a goo...
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JP3240757 |
PURPOSE: To make it possible to carry out a vibration test by compensating the response delay of an actuator. CONSTITUTION: A counterforce measuring means 8 is installed at an actuator drive part 7a and the counterforce to an actuator 7 ...
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JP2001271870 |
To provide a vibration damping device, capable of bringing out sufficient vibration suppressing performance. This active vibration damping device is provided with a support mechanism 2 for supporting a vibration damping table 1 for mount...
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JP2001271871 |
To attain weight reduction and miniaturization. Air springs 64 and 65 are arranged on the upper and lower sides of an added control mass body 63. The air quantity of the air springs 64 is controlled by a servo valve 66a with a feedback s...
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JP3235858 |
PURPOSE: To make the attachment of a detector to a vibrated object unnecessary and to secure the reliability of the subject controller by detecting the AC distortion caused by the driving AC voltage of the vibrated object and also contro...
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JP2001254774 |
To develop an amplitude-increased vibration control device having compactness in a total unit of the device to settle large shaking of long wavelength in a short time.This device is characterized by constituting it with a mass unit 2 mov...
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JP3228153 |
To compute a transfer fuction, required to reduce vibration, in a short time and with high accuracy without complicated arithmetic processing by identifying the transfer fuction using identification signals generated by discrete sine wav...
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JP3227944 |
PURPOSE: To decrease an error when a reference process signal required for the update arithmetic of an adaptive digital filter is calculated without causing any large increase in arithmetic load, etc. CONSTITUTION: A timer is cleared to ...
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JP3228224 |
To make a periodic variation (beat) state of a drive signal, etc., detectable without causing any great increase in arithmetic load. According to the amplitude of the drive signal, whether or not the drive signal periodically varies is d...
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JP3227963 |
PURPOSE: To evade growth to the real divergence of control. CONSTITUTION: In the case that the period of vibration is judged to be constant in a step 201, and in addition, the possibility of the divergence of an adaptive digital filter i...
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JP3226956 |
PURPOSE: To reduce the generation of bending vibration of a car low cost and excellent control performance by arranging lateral vibration acceleration detectors to the vicinity of the two side ends of a car body, a vertical vibration acc...
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JP3224489 |
PURPOSE: To permit the feed forward compensation provided for preventing swinging of a vibration-proof table to operate effectively by adding a timing pseudo differential signal for suppressing swinging of the vibration-proof table to th...
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JP2001221733 |
To provide a fine control mechanism providing a stable damping effect and permitting positioning at high speed in a short setting time.The residual vibration of a moving portion 12 is damped by a passive dynamic vibration reducer A havin...
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JP2001221278 |
To further inhibit the remaining inclination of a body structure in order to enhance the performance of an active vibration-resisting device and an exposure device using it.An air spring type vibration-resisting device is provided with a...
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JP2001221282 |
To provide a vibration-resisting device which is relatively simple in constitution and capable of lowering a characteristic frequency of a vibration- resisting stand and enlarging damping.In this vibration-resisting device having a vibra...
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JP3220418 |
To accurately perform control so that the response of a controlled system driven by using more than one drive signal has desired relation with an original target. A temporary target generating means 30 constituting a PSD controller 12 of...
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JP2001213509 |
To solve a problem in a conventional vibrating feeder where an acceleration in the direction opposite to the transferring direction is higher than that in the transferring direction of fine particles to transfer fine particles on a vibra...
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JP2001209434 |
To prevent a divergence of positioning control from occurring even if gain of positioning control is set highly.A vibration component of a table (14) is extracted, and according to the extracted component, the vibration component to canc...
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JP3217604 |
PURPOSE: To perform positioning with a high precision by generating an oscillation suppression control torque command based on a motion analysis model and feeding back this torque command to a motor torque command. CONSTITUTION: A machin...
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