Motor control device, brushless motor, and motor control system
AssigneePanasonic Corporation
InventorDaisuke Sato
Life of this patent
Estimating the term…
Abstract
A motor controller comprises a PWM demodulation processor for re storing speed command value Vr from PWM command signal Si, a rotatio n control section for generating drive value Dd of a motor according to the speed command value Vr, a power drive section for generating driving vol tages Uo, Vo and Wo to energize and drive a motor winding according to the drive value Dd, a rotation speed calculating section for generating dete cted speed value Vd as an information signal to be transmitted to outside, and a PWM modulation processor for generating PWM information signal Fp pulse-width modulated by detected speed value Vd. The PWM modul ation processor outputs the PWM information signal Fp generated in sync hronization with the PWM command signal.
Claims6
A motor controller configured to receive a PWM command signal formed of a pulse-width modulated rotation speed command, and control a motor to rotate at a speed corresponding to the rotation speed command, the motor controller comprising:
- a PWM demodulation processor for demodulating the PWM command signal and restoring the rotation speed command as a speed command value;
- a rotation control section for generating a drive value of the motor according to the speed command value;
- a power drive section for generating a driving voltage to energize and drive a winding of the motor based on the drive value;
- an information signal generator for generating an information signal to be transmitted to an outside;
- and
- a PWM modulation processor for generating a PWM information signal that is pulse-width modulated by the information signal,
- wherein the PWM modulation processor generates and outputs the PWM information signal synchronized with the PWM command signal.
Dependencies are inferred from the claim text.