Abstract: A power conversion system includes a power conversion device supplying electric power to a motor and a power supply device supplying electric power to the power conversion device. The power conversion device includes a reverse converter that converts the electric power, a control circuit that controls the reverse converter, and a current detector that detects current flowing through the reverse converter. The power supply device includes a storage device that stores electric power in accordance with a voltage, a step-up/down power supply circuit that changes the voltage of the storage device based on a voltage command, and a voltage command computing circuit that computes the energy stored in the storage device and output it as the voltage command to the step-up/down power supply circuit. When the characteristics of the motor are restricted, the voltage command computing circuit temporarily changes the voltage command to improve the motor characteristics.

Abstract: Provided are a deterioration diagnosis device and deterioration diagnosis method that make it possible to carry out accurate deterioration diagnosis that takes into consideration not only vibration quantity but also other vibration factors such as vibration cycle.

Abstract: Motor controller device comprising a position control system that controls the position of a machine end connected to a motor, wherein the motor controller device receiving the first speed directive from the high-level controller, stored in the position control system to output a motor axis position response to the high-level controller, comprising speed controller and vibration controller in speed control system, wherein the vibration controller in speed control system comprising: a position command estimator that calculates an estimate of the location directive based on the first speed directive and the motor axis position response, a parallel vibration damping controller that extracts the frequency components that excite vibration of the machine end included in the first speed directive based on the estimated value of the location directive, and outputs the extracted frequency components.

Abstract: A motor control device that supplies electric power to a motor is disclosed. The motor control device is provided with a storage unit to store position offset data and information of a machine origin position of the motor. The motor control device generates a command value of a position after offset by using an externally input position command and the position offset data and coverts electric power to be supplied to the motor based on the command value of a position after offset and position information that is input from an encoder. The position offset data is data in which offset positions and offset quantities have been recorded in a mapping relation. A start position of the offset positions differs from the machine origin position.

Abstract: This motor control device receives a speed command from an upper layer system control device having a position controller, the motor control device having: a position command estimator that calculates an estimate of a position command on the basis of the speed command and a motor axis position response; and a speed command generator that generates an actual speed command on the basis of the estimate so that an end section of a machine connected to the motor does not oscillate, wherein the actual speed command is output from the speed command generator to a speed controller.

Abstract: An estimated value of frequency of a vibration component for automatically adjusting a control unit that suppresses resonance characteristics of a machine is stably and reliably estimated without depending on the magnitude of amplitude of the vibration component and without risk of arithmetic overflow. A motor control device including an automatic adjustment device that adaptively adjusts a controller included in a motor control system based on a frequency of a vibration component superimposed on a response of the motor control system, the automatic adjustment device including a vibration extraction unit that receives the response of the motor control system and extracts the vibration component from the response of the motor control system; a notch filter unit that receives the vibration component from the vibration extraction unit; an encoding unit; a limiter unit that receives an output of the notch filter unit; an adaptive updating unit; and a unit conversion unit.

Abstract: This motor control device receives a speed command from an upper layer system control device having a position controller, the motor control device having: a position command estimator that calculates an estimate of a position command on the basis of the speed command and a motor axis position response; and a speed command generator that generates an actual speed command on the basis of the estimate so that an end section of a machine connected to the motor does not oscillate, wherein the actual speed command is output from the speed command generator to a speed controller.

Abstract: A power conversion system 200 includes a power conversion device 2 configured to supply electric power to a motor 3 and a power supply device 1 configured to supply electric power to the power conversion device 2. The power conversion device 2 includes a reverse converter 7 configured to convert the electric power, a control circuit 8 configured to control the reverse converter 7, and a current detector configured to detect a current flowing through the reverse converter 7. The power supply device 1 includes a storage device 6 configured to store electric power in accordance with a voltage, a step-up/down power supply circuit 5 configured to change the voltage of the storage device 6 based on a voltage command, and a voltage command computing circuit 15 configured to compute the energy stored in the storage device 6 and output it as the voltage command to the step-up/down power supply circuit 5.

Abstract: An estimated value of a frequency of a vibration component for automatically adjusting a control unit that suppresses resonance characteristics of a machine is estimated stably and highly reliably without depending on the magnitude of an amplitude of the vibration component and without any risk of arithmetic overflow.

Abstract: A resonance type power supply device includes: a power supply main circuit having a transformer, a resonance element connected on a primary side of the transformer, and a plurality of switching elements connected to the resonance element; and a power supply control circuit switching the plurality of switching elements in the power supply main circuit with a predetermined switching frequency, in which the power supply control circuit includes: a voltage controller outputting a current command value from a reference voltage, an output voltage of the power supply main circuit, and a voltage control gain; a current controller calculating a reference current, a current flowing on a secondary side of the transformer, and a current control gain; a gain calculator outputting the voltage control gain and the current control gain; and a control signal generator controlling the plurality of switching elements based on the switching frequency outputted by the current controller, and the gain calculator outputs the voltag

Abstract: A resonance type power supply device includes: a power supply main circuit having a transformer, a resonance element connected on a primary side of the transformer, and a plurality of switching elements connected to the resonance element; and a power supply control circuit switching the plurality of switching elements in the power supply main circuit with a predetermined switching frequency, in which the power supply control circuit includes: a voltage controller outputting a current command value from a reference voltage, an output voltage of the power supply main circuit, and a voltage control gain; a current controller calculating a reference current, a current flowing on a secondary side of the transformer, and a current control gain; a gain calculator outputting the voltage control gain and the current control gain; and a control signal generator controlling the plurality of switching elements based on the switching frequency outputted by the current controller, and the gain calculator outputs the voltag