Method and system for multiple servo motor control using a single control loop
US7474073B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2006 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Apr 3, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P5/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The solution involves the use of two or more motors to drive a common mechanism. The single control loop includes a position sensing device coupled to only a first of the plurality of servo motors and generating a position signal. A signal comparator receives the position signal and compares the position signal with a predetermined desired position based on a desired motion profile. The difference from the actual position and the motion profile is output as a position error signal. A signal converter receives the position error signal and derives a conversion signal based on the error signal. The conversion signal is provided to a plurality of signal amplifiers, which in turn are coupled to the plurality of servo motors. The amplifiers provide power to the motors for driving the mechanical load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.