Apparatus and method for detecting and preventing movement of a motor in a device of system
US9819288B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2016 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Feb 3, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2800/426
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A motor drive system configured to detect and prevent undesired movement of an item that is configured to be driven by the motor drive system. The motor drive system having: an electronic control unit operatively coupled to a rotor of the motor drive system, the electronic control unit being configured to detect undesired rotation of a shaft of the rotor, wherein the undesired rotation of the shaft is not caused by a force applied by the rotor; and wherein the electronic control unit of the motor drive system is configured to short windings of the motor drive system after a predetermined amount of undesired rotation of the shaft is detected by the electronic control unit such that further rotation of the rotor is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.