Method and apparatus for control of a motor-driven brake actuator
US6913327B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 2003 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jul 24, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/741
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention provides a method and control scheme to operate a motor-driven actuator. This includes determining actuator force on an external device, determining a command force, and monitoring actuator position. A determination is made whether to operate in a force-control mode or a position-control mode. Both the force-control mode and the position-control mode employ a common feedback control method (e.g. PI or PID). The system operates the actuator in the force-control mode, using actuator force as feedback to the control scheme when the controller determines that the force sensor is operating in its linear range. When the force sensor is operating outside or near the limits of its linear range, the control scheme determines a pseudo-force, comprising estimated force based upon measured position. The pseudo-force is input to the common feedback control method to control the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.