Invention Grant
- Patent Title: Electric power assisted steering apparatus
- Patent Title (中): 电动辅助转向装置
-
Application No.: US12443517Application Date: 2007-09-28
-
Publication No.: US08818635B2Publication Date: 2014-08-26
- Inventor: Neil Trueman , George Thomas Dibben
- Applicant: Neil Trueman , George Thomas Dibben
- Applicant Address: GB Midlands
- Assignee: TRW Limited
- Current Assignee: TRW Limited
- Current Assignee Address: GB Midlands
- Agency: MacMillan, Sobanski & Todd, LLC
- Priority: GB0619367.6 20060930
- International Application: PCT/GB2007/003682 WO 20070928
- International Announcement: WO2008/038006 WO 20080403
- Main IPC: B62D5/04
- IPC: B62D5/04

Abstract:
An electric power assisted steering apparatus for a vehicle, comprising:a steering mechanism, which operatively connects a steering wheel to road wheels of the vehicle;an electric motor operatively connected to the steering mechanism;a torque sensing means adapted to produce a first output signal indicative of the torque carried by a portion of the steering mechanism;a vehicle speed sensing means for producing a second output signal indicative of the speed of the vehicle;a signal processing means adapted to receive the first and second signals and to produce a torque demand signal representative of the torque to be applied to the steering mechanism by the motor; anda motor drive stage adapted to provide a drive current to the motor responsive to the torque demand signal;wherein the apparatus include at least one of the torque limiter arranged to limit the torque and the maximum rate of increase of the torque following a restart of the apparatus, the limit and rate being determined at least in part by information indicative of a state of the system prior to the restart.
Public/Granted literature
- US20100305815A1 ELECTRIC POWER ASSISTED STEERING APPARATUS Public/Granted day:2010-12-02
Information query
IPC分类: