发明名称 Electronically controlled power steering system for vehicles and method and system for motor control
摘要 A power steering device capable of obtaining a high rotary speed in the medium low torque range of an electric motor without incurring a drastic increase in manufacturing cost. The power steering device generates an auxiliary steering power by oil pressure that is generated by a pump which is driven by an electric power motor. The electric motor is a triple-phase brushless motor, with its angle of rotation being detected by the Hall sensors. The field coils are provided with the electric current from a drive circuit which is driven by a drive signal from the motor drive control part. The motor drive control part controls the electric motor by PWM control in the low medium speed rotation range and controls the electric motor by phase advance angle control, with PWM duty at 100 percent, in the medium high speed range.
申请公布号 US7180256(B2) 申请公布日期 2007.02.20
申请号 US20050228658 申请日期 2005.09.16
申请人 INTERNATIONAL RECTIFIER CORPORATION 发明人 ESKRITT JAMES B;KUEHNER JOEL E;JOUNOKUCHI HIDEKI;YAMAZAKI YOSHIYUKI
分类号 H02K21/00;B62D5/065 主分类号 H02K21/00
代理机构 代理人
主权项
地址