Sinfonia Technology Co., Ltd.

Shinko Electric Company, Ltd.

Kobelco Construction Machinery Co., Ltd.

Hideaki Moriya

Yasushi Muragishi

Takayoshi Fujii

Katsuyoshi Nakano

Yushi Sato

Hiroshi Nakagawa

Takeo Ito

Takashi Fukunaga

Takeshi Tomizaki

Takashi Onoue

Masaaki Narihisa

Hidetoshi Katada

Takenori Motoori

Yusuke Kamimura

Akira Nakazumi

Yuji Yamanaka

Mamoru Kosaki

Hiroyuki Suminaga

Tomohiro Okazaki

Keisuke Matsuno

Yaushi Muragishi

A non-contact power supply device is used in a processing apparatus including a moving unit movable inside a closed container. The device supplies electric power to the moving unit from outside the closed container. The power supply device includes a feed unit and a heat dissipater. The feed unit includes a feed line and a power supply transformer. The feed line has a feed region arranged inside the closed container along the moving direction of the moving unit. The transformer is arranged inside the closed container so as to be opposed to the feed region in a non-contact manner and is provided so as to move together with the moving unit. The heat dissipater includes a portion on one end side connected to the feed region so as to be capable of conducting heat thereto, and a portion on the other end side extending outside the closed container, so that heat generated in the feed region is partially dissipated outside the closed container.

Non-contact power supply device, and processing apparatus including non-contact power supply device

A vibration damping system comprises a vibration applying device mounted on a frame and a control device that controls the vibration applying device, the control device comprising a voltage command producing part that produces a driving voltage command to drive the vibration applying device and a vibration failure diagnosis part that diagnoses whether there is failure based on a vibration detection signal output by a vibration detecting device, wherein the voltage command producing part produces the driving voltage command corresponding to a diagnosis frequency that is previously set at a frequency identical to a resonance frequency of the frame or the vibration applying device or at a predetermined frequency close to the resonance frequency and makes the vibration applying device generate the vibration applying force according to the driving voltage command, and the vibration failure diagnosis part diagnoses whether there is failure based on the vibration detection signal.

Vibration damping system and vehicle

The Electronic Module includes body casethat comprises a plurality of case membersby abutting each other and that has an internal space (S) where the first opening Pis formed on one side surface of the internal space (S) and the second opening Pthat opens in a direction different from that of the first opening Pis in an exposed state when a plurality of the case membersare separated each other, a substrateon which a sensor ICis mounted and that is housed in the internal space (S) of the body case, and a resin bodythat covers the substrateby being filled in the internal space (S) of the body caseand solidified or hardened, and is characterized by that a plurality of the case members

Electronic module and method for manufacturing electronic module

There is obtained a configuration capable of rapidly decelerating a motor even if a failure occurs in the communication between a controller and a motor control unit in a motor controller in which a speed command is input from the controller to the motor control unit. A motor controlleris provided with a main controller, and a motor control unitconfigured to be communicable with the main controllerto drive a motor M according to a torque command output from the main controller. The motor control unitincludes a speed control unitfor outputting a torque command, so as to decelerate the motor M, if any failure occurs in communication with the main controllerwhile the motor M is being driven.

Motor controller and construction machine provided therewith

An object of the present invention is to provide an inverter device for driving an electric motor, which allows control stability and efficiency to be ensured over a wide region of the speed of the electric motor. The inverter device includes a rotational-speed detection section which detects a rotational speed of the electric motor, a carrier-frequency calculation section which calculates a carrier frequency on the basis of the detected rotational speed, and a carrier-frequency switching section which switches, on the basis of the calculated carrier frequency, the carrier frequency used for performing PWM control on the electric motor. The carrier-frequency calculation section calculates, as the carrier frequency, a frequency increased with an increase in the electric-motor rotational speed detected by the rotational-speed detection section.

Inverter device for driving electric motor

The Electronic Module has a body case, including a plurality of case membersand that has an internal space (S) where a first opening Pis formed on one side surface of the internal space and a second opening Pthat opens in a direction different from that of the first opening Pis in an exposed state when a plurality of the case members are separated each other, a substrateon which a sensor ICis mounted and that is housed in the internal space of the body case, and a resin bodythat covers the substrateby being filled in the internal space of the body case and solidified or hardened, and is characterized by that a plurality of the case members and the substrateare integrated by the use of the resin bodyas an accouplement.

A damping device includes a calculator calculating a pseudo vibration to cancel a source vibration transmitted from a vibration source to a position to be damped, using an adaptive control algorithm. The canceling vibration is generated according to the pseudo vibration. A vibration detector detects an error vibration remaining at the position. The adaptive control algorithm is adapted by learning to reduce the error vibration. A frequency recognizer recognizes a frequency of the source vibration from a signal related to the vibration source. The frequency of the vibration is used to determine a frequency of the pseudo vibration. A phase difference identifier identifies a phase difference between the error vibration and the canceling vibration according to the pseudo vibration, and a frequency corrector corrects, according to the phase difference, the frequency of the vibration to eliminate the phase difference.

Vibration damping device and method for canceling out a vibration at a damping position based on a phase difference

A linear actuator driving device is provided. The linear actuator driving device includes an electromagnetic driving unit which makes a moving element reciprocate in response to a driving command and an offset correcting unit which corrects the driving command to carry out offset energization to make the center of reciprocation of the moving element be moved in the direction in which deviation between the center of reciprocation of the moving element and the center of the movement possible range is eliminated. The offset correcting unit is configured such that the amplitude information is acquired and, with respect to the amplitude value corresponding to the acquired amplitude information, if the movable amplitude is in a movable area insufficient condition, correction of the driving command is performed and, on the other hand, if the movable amplitude is not in the movable area insufficient condition, correction of the driving command is released.

Linear actuator driving device

A damping apparatus for an automobile is provided, capable of ensuring a high level of reliability while obtaining excellent damping effect with simple configuration. The damping apparatus for an automobile that reduces vibrations of an automobile body may include an actuator that is attached to the automobile body and drives an auxiliary mass; a current detector that detects a current flowing through an armature of the actuator; a section that detects a terminal voltage applied to the actuator; a calculation circuit that calculates an induced voltage of the actuator, and further calculates at least one of the relative velocity, relative displacement, and relative acceleration of the actuator, based on a current detected by the current detector and the terminal voltage; and a control circuit that drive-controls the actuator based on at least one of the relative velocity, relative displacement, and relative acceleration of the actuator calculated by the calculation circuit.

Damping apparatus for reducing vibration of automobile body

Damping apparatus for reducing vibrations

[Object] To predetermine a target vibration level and keep vibration generated at a position at which vibration is to be controlled equal to or smaller than a target vibration level. [Solving Means] A frequency detection means for detecting a frequency of vibration arising from a vibration generation source, a vibration detection means for detecting vibration of a frequency that is equal to the frequency of the vibration arising from the vibration generation source that is detected by the frequency detection means at a position at which vibration is to be controlled, a vibration level conversion means for converting the detected vibration into a vibration level, a vibration means provided at a position that is different from or the same as the position at which vibration is to be controlled, for generating a vibration control force with which the position at which vibration is to be controlled is vibrated, a comparison means for comparing the vibration level with a predetermined target vibration level, and a vibration command generation means for generating, based on a comparison result obtained by the comparison means, a vibration command for reducing vibration so that the vibration level is changed into the target vibration level in a case where the vibration level is larger than the target vibration level, and outputting the generated vibration command to the vibration means are provided.

Vibration control device and vehicle

An A/D conversion device includes a first A/D converter that receives an analog vibration signal corresponding to a vibration detected by a vibration detecting sensor and converts the analog vibration signal to a first digital value, an analog amplifier that amplifies the analog vibration signal and outputs an amplified signal, a second A/D converter that converts the amplified signal to a second digital value, a determiner that determines whether an amplitude of the amplified signal input to the second A/D converter exceeds a range of amplitude that is convertible by the second A/D converter, and a selector that receives the first digital value and the second digital value and output one of the first and second digital values based on the determination of the determiner.

A/D conversion device and vibration damping apparatus for automobile using the A/D conversion device

A vibration damping apparatus including reference wave production section that produces a reference wave; a fundamental order adaptive algorithm block that calculates fundamental order adaptive filter factors from a vibration detection signal and the reference wave and produces a fundamental order vibration damping current instruction; an amplitude detection section that calculates a peak current value of the fundamental order vibration damping current instruction; and a fundamental order current excess detection section that derives a fundamental order current upper limit value from the fundamental frequency to produce a fundamental order current upper limit excess signal that is output to the fundamental order adaptive algorithm block, which revises the fundamental order adaptive filter factors in a direction in which the vibration damping current instruction is limited within a range.

Growing community of inventors

Ise, Japan

Hideaki Moriya