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1.发明授权Electronically controlled power steering system for vehicles and method and system for motor control 有权用于车辆的电子控制动力转向系统和用于电机控制的方法和系统公开(公告)号：US07180256B2
公开(公告)日：2007-02-20
申请号：US11228658
申请日：2005-09-16
IPC分类号： H02K21/00
CPC分类号： B62D5/065 , Y10S388/933
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.
摘要翻译： 一种能够在电动机的中等低扭矩范围内获得高转速的动力转向装置，而不会大大增加制造成本。 动力转向装置通过由电动马达驱动的泵产生的油压产生辅助转向力。 电动机是三相无刷电动机，其旋转角度由霍尔传感器检测。 励磁线圈由来自电动机驱动控制部的驱动信号驱动的驱动电路提供电流。 电动机驱动控制部分通过在低中速旋转范围内的PWM控制来控制电动机，并且在中等高速范围内通过相位提前角控制控制电动机，PWM占空比为100％。
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公开(公告)号：US07202622B2
公开(公告)日：2007-04-10
申请号：US11149101
申请日：2005-06-09
申请人： James B Eskritt , Joel E Kuehner
发明人： James B Eskritt , Joel E Kuehner
摘要： A method for reducing EMI emissions in the control of an electric motor supplied by a switching inverter fed by a DC bus comprising controlling a phase advance of a conduction angle period during which a phase of the motor is fed power by the inverter to control the conduction angle to control the speed of the motor, thereby to reduce the number of switching operations of the inverter and thereby reduce EMI.
摘要翻译： 一种用于减少由由DC总线馈送的开关逆变器提供的电动机的控制中的EMI发射的方法，包括：控制所述电动机的相位由所述逆变器供电的导通角周期的相位提前，以控制所述导通 角度来控制电动机的速度，从而减少逆变器的开关操作次数，从而降低EMI。
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