Servo controller and control method using the same
US7477951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2006 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Apr 26, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B11/42
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
When an integral calculation of a physical quantity representing a state of a controlled system is performed, two integral calculations, that is, a positive-integral calculation and a negative-integral calculation are performed. In this way, differentiated information can be obtained, depending on the control conditions. A selection of which one of the integral value obtained by the positive-integral calculation and the integral value obtained by the negative-integral calculation is used, is made on the basis of an actual control value and a desired control value when control is performed so that a value representing the state of the controlled system becomes equal to the desired control value. In this way, a control parameter which has been judged to include a phase delay is removed. Thus, the phase delay in the overall control can be suppressed, and an appropriate steering assist control can be performed, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.