Electro-mechanical actuator braking apparatus and method using motor commutation sensor output to derive piston displacement
US7129658B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Oct 14, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2066/003
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A braking system is disclosed that includes a brake (22), a ram (20) shiftable in a linear direction relative to the brake (22) for actuating the brake (22), and a stop (24) for limiting movement of the ram (20). The system further includes a motor (12) for moving the ram (20) which motor (12) includes a stator and a rotor (13) and a commutation sensor (14) producing an output. A motor controller (28) receives a commutation signal based on the output and controls the motor (12) based on the commutation signal. A processor (31) also uses the commutation signal to generate a position signal indicative of the position of the ram (20) relative to the stop (24). Methods of using this system are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.