Patent application number | Description | Published |
20080309279 | MOTOR CONTROLLER - A motor controller includes: a notch filter arranged inside a control system; an oscillation frequency estimating section which estimates an oscillation frequency component in a motor; and a notch control section which controls a notch filter so as to change a notch frequency and a notch width. The notch control section changes a frequency between an oscillation frequency and a notch frequency set in a notch filter as a new notch frequency, while changing a notch width to a new notch width such that the notch width is larger after the change than before the change. | 12-18-2008 |
20100333010 | Motor Control Characteristic Evaluation Device and Motor Control Characteristic Presentation Method - An evaluation index selection section in which any evaluation index is selected from a plurality of evaluation indices of the control characteristics in the motor control system and which outputs selection information indicating the selected evaluation index; a relational data extraction section for extracting data related to the selected evaluation index from a data group of the motor control system based on the selection information; an evaluation value calculation section for calculating an evaluation value of the evaluation index based on the extracted data; and a display control section for displaying the calculated evaluation value on a display are included. | 12-30-2010 |
20110029137 | MOTOR DEVICES, AND MOTOR DRIVING SYSTEM AND INTEGRATED CIRCUIT DEVICE COMPRISING THE SAME - A motor device comprising a motor, and a drive control circuit for driving and controlling the motor, in which the drive control circuit includes a control unit for generating a control signal for controlling the rotation of the motor, a drive unit for driving the motor on the basis of the control signal, and a communication unit for making serial communications via a serial communication bus for transmitting serial data. This communication unit has an address generating function for generating and setting addresses. | 02-03-2011 |
20110031906 | MOTOR DRIVING DEVICE, INTEGRATED CIRCUIT DEVICE, MOTOR DEVICE, AND MOTOR DRIVING SYSTEM - A motor driving device according to the present invention includes: a serial communication unit that conducts communication through a serial communication bus, the serial communication bus including a serial data line through which serial data is transmitted and a clock line through which a clock signal is transmitted; and a drive control unit that controls a driving operation of a motor. The motor driving device is configured such that a clock signal received from the serial communication bus is used as a reference clock signal of the drive control unit. | 02-10-2011 |
20110221378 | MOTOR CONTROLLER - There are provided: a plurality of notch filters which are arranged inside a control system for feedback-controlling a moving operation of a moving section of a motor and attenuate signal components having near frequencies with a notch frequency at a center in an input signal; a plurality of oscillation extracting filters which are set with different frequency bands as being corresponded to the respective notch filters and extract oscillating components in the set frequency bands from a speed detection signal; and a plurality of notch controlling sections which are arranged with respect to the respective oscillation extracting filters and control the notch frequencies of the corresponding notch filters so as to decrease amplitudes of the oscillating components extracted by the oscillation extracting filters. | 09-15-2011 |
20130063064 | MOTOR CONTROL APPARATUS - There are provided a first notch filter disposed in a feedback control system, an oscillation extracting filter for outputting signal x | 03-14-2013 |
20130113409 | MOTOR CONTROLLER - There are provided: a plurality of notch filters which are arranged inside a control system for feedback-controlling a moving operation of a moving section of a motor and attenuate signal components having near frequencies with a notch frequency at a center in an input signal; a plurality of oscillation extracting filters which are set with different frequency bands as being corresponded to the respective notch filters and extract oscillating components in the set frequency bands from a speed detection signal; and a plurality of notch controlling sections which are arranged with respect to the respective oscillation extracting filters and control the notch frequencies of the corresponding notch filters so as to decrease amplitudes of the oscillating components extracted by the oscillation extracting filters. | 05-09-2013 |
20130175970 | CURRENT CONTROL GAIN ADJUSTING METHOD FOR PM MOTOR, CURRENT CONTROL METHOD, AND CONTROL DEVICE - The present invention includes a voltage applying step of applying an applied voltage including a DC component and a plurality of frequency components to a PM motor, a motor current detecting step of detecting a motor current flowing depending on the applied voltage, and a current control gain adjusting step of calculating a current control gain based on frequency characteristics of the applied voltage and the motor current. In this manner, a stable current control gain having a high current response can be adjusted within a short period of time. | 07-11-2013 |
20130181650 | MOTOR CONSTANT CALCULATING METHOD FOR PM MOTOR, AND MOTOR CONSTANT CALCULATING DEVICE - A motor constant calculating method for a PM motor according to the present invention includes a voltage applying step of applying an applied voltage including a DC component and a plurality of frequency components to a PM motor, a motor current detecting step of detecting a motor current flowing depending on the applied voltage applied in the voltage applying step, and a motor constant calculating step of calculating a motor constant of the PM motor based on the applied voltage and the motor current. | 07-18-2013 |
20140152202 | METHOD FOR CALCULATING MOTOR CONSTANT OF PERMANENT MAGNET TYPE SYNCHRONOUS MOTOR AND MOTOR CONSTANT CALCULATING DEVICE - A method for calculating a motor constant of a permanent magnet type synchronous motor according to the present invention includes: a voltage applying step of applying a voltage obtained by compositing a DC component and an AC component to a permanent magnet type synchronous motor while varying a frequency of the AC component; a current detecting step of detecting a motor current flowing according to the applied voltage; a phase difference calculating step of calculating a difference in phase between the AC component of the applied voltage and an AC component of the motor current; and a motor constant calculating step of calculating a motor constant of the permanent magnet type synchronous motor. In addition, in the motor constant calculating step, the motor constant is calculated based on the applied voltage and the motor current when the difference in phase becomes nearly 45 degrees. | 06-05-2014 |
20150064023 | MOTOR CONTROLLER AND MOTOR CONTROL METHOD - A motor controller of the present invention comprises units which obtain information indicative of a motor speed (ω) and information indicative of motor torque (T), an air flow calculation section which calculates an air flow (Q) of a fan based on the motor speed (ω) and the motor torque (T); and a speed command generation section which generates a speed command (ω*) of a motor such that the air flow (Q) coincides with the predetermined air flow command (Q*). | 03-05-2015 |