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1. 发明授权

US6134490A Power steering device assisted by variable power 有权
标题翻译：动力转向装置由可变动力辅助
公开(公告)号：US6134490A
公开(公告)日：2000-10-17
申请号：US277739
申请日：1999-03-29
申请人： Norihisa Ito , Nobuhiko Uryu , Yasuhiko Sugihara
发明人： Norihisa Ito , Nobuhiko Uryu , Yasuhiko Sugihara
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D113/00 , B62D117/00 , B62D119/00
CPC分类号： B62D5/0463
摘要： Steering of a vehicle is assisted by a motor driven according to a steering signal formulated by a digital computer. The steering signal is formulated so that a high and quick power-assist is obtained when the steering is steep or sharp, while trembling vibrations appearing on a steering wheel due to noise are suppressed when the steering is slow or the steering wheel is stably held. A steering velocity calculated from a steering angle and a steering torque signal detected from a torsional torque of a steering shaft are used to formulate the steering signal. An original steering torque signal is modified by a transfer function having a higher gain and a higher phase advance in a certain frequency range thereof, thereby formulating a final steering signal which controls operation of the power-assist motor.
摘要翻译：车辆的转向由根据由数字计算机制定的转向信号驱动的电动机辅助。转向信号被配置为使得当转向陡峭或锋利时获得高且快速的助力，同时当转向较慢或方向盘稳定地保持时，抑制由于噪音而在方向盘上出现颤抖的振动。使用从转向轴的扭转扭矩检测到的转向角度和转向转矩信号计算的转向速度来制定转向信号。原始转向转矩信号通过在其一定频率范围内具有较高增益和较高相位超前的传递函数进行修改，从而形成控制动力辅助电动机运行的最终转向信号。

2. 发明授权

US06727671B2 Control system for electric power steering apparatus 有权
标题翻译：电动助力转向装置控制系统
公开(公告)号：US06727671B2
公开(公告)日：2004-04-27
申请号：US10383756
申请日：2003-03-10
申请人： Norihisa Ito , Hideki Amakusa , Atsushi Sato
发明人： Norihisa Ito , Hideki Amakusa , Atsushi Sato
IPC分类号： H02P700
CPC分类号： B62D5/0493
摘要： A control system for an electric power steering apparatus detects calculation anomalies in a CPU regardless of the magnitude of a modified control quantity. The CPU has a basic control quantity calculating means for calculating a basic control quantity to drive a motor based on an output from a torque sensor, and a modified control quantity calculating means for calculating a modified control quantity corresponding to the steering conditions (for example, steering speed) of the steering wheel. The CPU-calculation monitoring unit has a first anomaly deciding means for deciding whether the calculation result of the basic control quantity calculating means is normal or anomalous in light of the output from the torque sensor, and a second anomaly deciding means for deciding whether the calculation result of the modified control quantity calculating means is normal or anomalous in light of the steering conditions. The motor is deactivated if anomalies are detected.
摘要翻译：用于电动转向装置的控制系统检测CPU中的计算异常，而与修改的控制量的大小无关。 CPU具有基本控制量计算装置，用于基于来自扭矩传感器的输出来计算用于驱动电动机的基本控制量;以及修改控制量计算装置，用于计算对应于转向条件的修改控制量（例如，方向盘的转向速度）。 CPU计算监视单元具有第一异常判定装置，用于根据扭矩传感器的输出来判定基本控制量计算装置的计算结果是正常还是异常;第二异常判定装置，用于判定计算根据转向条件，修正控制量计算装置的结果是正常的或异常的。如果检测到异常，则电机停用。

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