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1. 发明授权

US5554915A High impedance AC coupling method for quick command response in torque compensation systems 失效
标题翻译：用于扭矩补偿系统中快速命令响应的高阻抗交流耦合方法
公开(公告)号：US5554915A
公开(公告)日：1996-09-10
申请号：US574093
申请日：1995-12-14
申请人： Robert S. Wedeen , Gholam D. Goodarzi
发明人： Robert S. Wedeen , Gholam D. Goodarzi
IPC分类号： B60L15/20 , G05B5/00
CPC分类号： B60L15/20 , Y02T10/7275
摘要： A high impedance AC coupling arrangement that processes a transducer feedback signal derived from an output shaft of an electric vehicle motor to compensate for electrical motor pulsations. The high impedance AC coupling arrangement is coupled between the transducer and a summing device and generates a feedback compensation signal that is combined with an input signal to compensate for output shaft oscillations. The high impedance AC coupling arrangement includes a loop amplifier having a predetermined transfer function that is coupled to the transducer, and AC coupling circuitry, typically including a plurality of coupling capacitors, that is coupled between the loop amplifier and the summing device. A limiter circuit having first and second oppositely coupled diodes is coupled between a voltage source and a point between the AC coupling capacitors. A cascode amplifier is coupled to the AC coupling circuitry. Compensation for the pulsations is provided by utilizing the AC component of the signal derived from the transducer as a feedback signal from which compensation commands are derived. This AC-coupled signal is fed back with proper amplitude and phase shift to modulate and compensate the motor current and/or slip and/or speed and/or commutating angle and/or field current to eliminate torque fluctuations of the drive train of the vehicle. The present invention eliminates these unwanted pulsations over all modes of propulsion operation.
摘要翻译：一种高阻抗AC耦合装置，其处理从电动车辆电动机的输出轴得到的换能器反馈信号，以补偿电动机的脉动。高阻抗AC耦合布置耦合在换能器和求和装置之间，并产生与输入信号组合以补偿输出轴振荡的反馈补偿信号。高阻抗AC耦合装置包括具有耦合到换能器的预定传递函数的环路放大器，以及耦合在环路放大器和求和装置之间的通常包括多个耦合电容器的AC耦合电路。具有第一和第二相对耦合的二极管的限幅器电路耦合在电压源和AC耦合电容器之间的点之间。级联放大器耦合到AC耦合电路。通过利用从换能器得到的信号的AC分量作为推导补偿指令的反馈信号来提供脉动补偿。该AC耦合信号以适当的幅度和相移反馈，以调制和补偿电机电流和/或滑差和/或速度和/或换向角度和/或场电流，以消除车辆的传动系的扭矩波动。本发明在所有推进操作模式中消除了这些不需要的脉动。

2. 发明授权

US5442268A Torque oscillation compensation using torque emulator/observer feedback 失效
标题翻译：使用扭矩仿真器/观察者反馈的扭矩振荡补偿
公开(公告)号：US5442268A
公开(公告)日：1995-08-15
申请号：US61658
申请日：1993-05-13
申请人： Gholam D. Goodarzi , Robert S. Wedeen
发明人： Gholam D. Goodarzi , Robert S. Wedeen
IPC分类号： B60L11/18 , B60L15/20 , H02P7/00
CPC分类号： B60L15/20 , B60L11/1803 , Y02T10/7005 , Y02T10/7275
摘要： A torque oscillation compensation system and torque estimator that uses torque emulator/observer feedback derived from an electric vehicle motor drive train. The present torque oscillation compensation system is adapted for use with an electric vehicle comprising a source of torque command signals and an electric motor that is controlled by a power switching circuit. The power switching circuit is responsive to the torque command signals and provides pulse width modulated signals for driving the motor. The system comprises a torque estimator that is coupled to received pulse width modulated signals provided by the power switching circuit, and motor currents and speed, for providing estimated torque feedback signals derived therefrom. A summing device coupled to the source of of torque commands, the torque estimator, and to the power switching circuit, for combining the torque command signals with the estimated torque feedback signals to provide compensated input signals to the power switching circuit that control the motor torque and speed. The present invention provides a calculated estimate of motor power and torque in an electric drive train system. The power and torque are calculated by utilizing pulse width modulated signals of a motor controller and scaling the result according to the value of the battery voltage/power supply. This provides accurate operation over the entire battery voltage range without requiring voltage measurement at the motor terminals. The present technique provides for smooth vehicle handling over a broad range of speeds for every mode of propulsion operation. Single phase and three phase embodiments of the invention are disclosed.
摘要翻译：扭矩振荡补偿系统和扭矩估计器，其使用来自电动车辆电动机传动系的扭矩仿真器/观测器反馈。本扭矩振荡补偿系统适用于包括转矩指令信号源的电动车辆和由电力切换电路控制的电动机。功率开关电路响应于转矩指令信号，并提供用于驱动电动机的脉宽调制信号。该系统包括耦合到由功率开关电路提供的接收的脉冲宽度调制信号以及电动机电流和速度的扭矩估计器，用于提供从其导出的估计转矩反馈信号。一个与转矩指令源相耦合的求和装置，转矩估计器和功率开关电路，用于将转矩指令信号与估算的转矩反馈信号相组合，以向调节电动机转矩的功率开关电路提供经补偿的输入信号和速度。本发明提供了电力传动系统中的电动机功率和转矩的计算估计。通过利用电机控制器的脉宽调制信号来计算功率和转矩，并根据电池电压/电源的值对结果进行缩放。这在整个电池电压范围内提供精确的操作，而不需要在电机端子上进行电压测量。本技术提供了用于每种推进操作模式的宽范围速度下的平稳车辆处理。公开了本发明的单相和三相实施例。

3. 发明授权

US5359269A Torque oscillation compensation using torque transducer feedback 失效
标题翻译：转矩振荡补偿使用转矩传感器反馈
公开(公告)号：US5359269A
公开(公告)日：1994-10-25
申请号：US61657
申请日：1993-05-13
申请人： Robert S. Wedeen , Gholam D. Goodarzi
发明人： Robert S. Wedeen , Gholam D. Goodarzi
IPC分类号： B60L11/18 , B60L15/20 , G05D17/02 , H02P7/00
CPC分类号： B60L11/18 , B60L15/20 , G05D17/02 , Y02T10/7005 , Y02T10/7275
摘要： A torque oscillation compensation system and circuit that uses torque transducer feedback derived from an output shaft of an electric vehicle motor to compensate for electrical motor pulsations such as are experienced in an electric vehicle. A torque input source provides a torque input signal, that is coupled to a summing circuit. A controller is coupled to the summing circuit, and power switching circuitry is coupled between the controller and the electric motor. A torque transducer is coupled to the output shaft of the motor to sense torque pulsations. An oscillation compensation circuit is coupled between the torque transducer and the summing circuit that generates a feedback compensation signal that is combined with the torque input signal to compensate for output shaft oscillators. The oscillation compensation circuit comprises a loop amplifier having a predetermined transfer function and is coupled to the torque transducer, and AC coupling circuitry, typically comprising a plurality of coupling capacitors, coupled between the loop amplifier and the summing circuit. A limiter circuit comprising first and second oppositely coupled diodes may be coupled to a point between the AC coupling capacitors. The oscillation compensation circuit may include a cascade amplifier coupled to the AC coupling circuitry. Compensation for the torque pulsations is provided by utilizing the AC component of a signal derived from the torque transducer that is coupled to the drive shaft of the electric motor as a feedback signal from which compensation commands are derived. This AC-coupled signal is fed back with proper amplitude and phase shift to modulate and compensate the motor current and/or slip and/or speed and/or commutating angle and/or field current to eliminate torque fluctuations of the drive train of the vehicle. The present invention eliminates these unwanted torque pulsations over all modes of propulsion operation.
摘要翻译：一种扭矩振荡补偿系统和电路，其使用从电动车辆电动机的输出轴获得的扭矩传感器反馈来补偿电动车辆中经历的电动机脉动。扭矩输入源提供扭矩输入信号，其耦合到求和电路。控制器耦合到求和电路，并且功率开关电路耦合在控制器和电动马达之间。扭矩传感器耦合到马达的输出轴以感测扭矩脉动。振荡补偿电路耦合在扭矩传感器和求和电路之间，该电路产生与扭矩输入信号组合以补偿输出轴振荡器的反馈补偿信号。振荡补偿电路包括具有预定传递函数并耦合到扭矩传感器的环路放大器，以及耦合在环路放大器和求和电路之间的通常包括多个耦合电容器的AC耦合电路。包括第一和第二相对耦合的二极管的限幅器电路可以耦合到AC耦合电容器之间的点。振荡补偿电路可以包括耦合到AC耦合电路的级联放大器。扭矩脉动的补偿通过利用从与电动机的驱动轴相连接的扭矩传感器得到的信号的交流分量作为推导补偿指令的反馈信号来提供。该AC耦合信号以适当的幅度和相移反馈，以调制和补偿电机电流和/或滑差和/或速度和/或换向角度和/或场电流，以消除车辆的传动系的扭矩波动。本发明在所有推进操作模式中消除了这些不必要的扭矩脉动。

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