Servo system
US12399485B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2023 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | May 7, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/4155
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A servo system including a control device and multiple servo drivers reduces noise resulting from switching. The servo system includes a control device and multiple servo drivers. Each servo driver includes a servo signal generator, a PWM calculator that generates a PWM control signal with a pulse being modulated, and an inverter. The PWM calculator performs a first process of generating, using a predetermined parameter set based on a circuit structure including the servo driver and the corresponding motor, a superimposed signal to be superimposed on the command signal, and the superimposed signal differs for each of control axes corresponding to the respective plurality of motors when the command signal is in a low voltage range. The PWM calculator performs a second process of generating the PWM control signal by adding the superimposed signal to the command signal and by comparing a resulting signal with a predetermined carrier signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.