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    • 1. 发明授权
    • Separately excited DC motor with boost and de-boost control
    • 独立激励的直流电机具有升压和降压控制
    • US6031965A
    • 2000-02-29
    • US162268
    • 1998-09-29
    • Joseph K. HammerDavid B. StangJohn R. HarmanChristopher M. KillianRobert Lankin
    • Joseph K. HammerDavid B. StangJohn R. HarmanChristopher M. KillianRobert Lankin
    • H02P7/298H02P5/178
    • H02P7/2985
    • A motor control system is provided comprising an electrically charged battery, an electrical motor, a battery voltage sensor, a motor speed sensor, an armature voltage sensor, an armature current sensor, and a microprocessor. The magnitude of the armature current applied to the motor is a function of a predetermined armature current setpoint signal and the magnitude of the field current applied to the motor is a function of a predetermined field current setpoint signal, a field current correction signal, and a field current de-boost signal. The microprocessor programmed to generate an armature current setpoint signal, a field current setpoint signal, and an armature voltage reference signal. Further, the microprocessor is programmed to (i) compare the armature voltage reference signal to the measured armature voltage signal and generate an armature voltage error signal based on the comparison; (ii) generate the field current correction signal as a function of the armature voltage error signal; (iii) generate an armature-to-field current check function, wherein the check function defines a set of armature current to field current ratio values as a function of armature current; (iv) calculate a ratio of the measured armature current signal to the field current setpoint signal to establish an operating ratio value, (v) compare the operating ratio value to a corresponding armature current to field current ratio value of the armature-to-field current check function, and (vi) establish the field current de-boost signal, wherein the magnitude of the field current de-boost signal is a function of the measured armature current signal and the comparison of the operating ratio value to the corresponding ratio value.
    • 提供一种电动机控制系统,包括充电电池,电动机,电池电压传感器,电动机速度传感器,电枢电压传感器,电枢电流传感器和微处理器。 施加到电动机的电枢电流的大小是预定的电枢电流设定点信号的函数,并且施加到电动机的励磁电流的大小是预定的励磁电流设定点信号,励磁电流校正信号和 场电流去升压信号。 微处理器被编程为产生电枢电流设定点信号,励磁电流设定点信号和电枢电压参考信号。 此外,微处理器被编程为(i)将电枢电压参考信号与所测量的电枢电压信号进行比较,并基于该比较产生电枢电压误差信号; (ii)产生作为电枢电压误差信号的函数的励磁电流校正信号; (iii)产生电枢到场电流检查功能,其中所述检查功能定义作为电枢电流的函数的一组电枢电流与励磁电流比值; (iv)计算测量的电枢电流信号与励磁电流设定点信号的比率以建立运行比值,(v)将运行比值与电枢对场的对应电枢电流与励磁电流比值进行比较 电流检测功能,以及(vi)建立励磁电流去升压信号,其中励磁电流去升压信号的幅度是所测量的电枢电流信号的函数,以及运行比值与相应的比值的比较 。
    • 2. 发明授权
    • Compensated field current control for a separately excited DC motor
    • 用于单独激励的直流电动机的补偿励磁电流控制
    • US6021251A
    • 2000-02-01
    • US162270
    • 1998-09-29
    • Joseph K. HammerDavid B. StangJohn R. HarmanChristopher M. KillianRobert Lankin
    • Joseph K. HammerDavid B. StangJohn R. HarmanChristopher M. KillianRobert Lankin
    • H02P7/29H02P7/292H02P5/178
    • H02P7/2913H02P7/292
    • In accordance with one embodiment of the present invention, a motor control system is provided comprising an electrical motor, a motor speed sensor, a speed command generator, an armature voltage sensor, and a microprocessor. The electrical motor includes an armature assembly and a field assembly. The armature assembly is responsive to an armature current, the magnitude of which is a function of a predetermined armature current setpoint. The field assembly is responsive to a field current, the magnitude of which is a function of a predetermined field current setpoint and a field current correction signal. The motor speed sensor is arranged to generate an actual motor speed signal representative of an actual speed of the electrical motor. The speed command generator is arranged to generate a speed command signal indicative of a desired speed of the electrical motor. The armature voltage sensor is arranged to generate a measured armature voltage signal from an electrical potential of the armature assembly. The microprocessor is programmed to: (i) generate an armature voltage reference signal, the field current setpoint, and the armature current setpoint, wherein the armature voltage reference signal, the field current setpoint, and the armature current setpoint as a function of the speed command signal and the actual motor speed signal; (ii) compare the armature voltage reference signal to the measured armature voltage signal and generate an armature voltage error signal based on the comparison; and, (iii) generate the field current correction signal as a function of the armature voltage error signal.
    • 根据本发明的一个实施例,提供一种电动机控制系统,其包括电动机,电动机速度传感器,速度指令发生器,电枢电压传感器和微处理器。 电动机包括电枢组件和现场组件。 电枢组件响应于电枢电流,电枢电流的大小是预定的电枢电流设定点的函数。 场组件响应于场电流,其大小是预定场电流设定点和场电流校正信号的函数。 电动机速度传感器被布置成产生代表电动机的实际速度的实际电动机速度信号。 速度指令发生器被布置成产生指示电动机的期望速度的速度指令信号。 电枢电压传感器被布置成从电枢组件的电位产生测量的电枢电压信号。 微处理器被编程为:(i)产生电枢电压参考信号,励磁电流设定点和电枢电流设定点,其中电枢电压参考信号,励磁电流设定点和电枢电流设定值作为速度的函数 指令信号和实际电机速度信号; (ii)将电枢电压参考信号与所测量的电枢电压信号进行比较,并根据比较产生电枢电压误差信号; 和(iii)产生作为电枢电压误差信号的函数的励磁电流校正信号。
    • 6. 发明授权
    • Optimal DC motor/controller configuration
    • 最佳DC电机/控制器配置
    • US5332954A
    • 1994-07-26
    • US859590
    • 1992-03-30
    • Robert Lankin
    • Robert Lankin
    • B60L11/18H02P7/298H02P1/00
    • B60L11/1805H02P7/298B60L2220/14Y02T10/642Y02T10/7005Y02T10/92
    • Optimal constructions for two motor/controller configurations are disclosed. The controller structure includes an H-bridge for controlling field current using synchronous-rectification of MOSFET devices, and a circuit for chopping the armature current using synchronous-rectification of MOSFET devices arranged in a half bridge. The controller may be configured with a series-wound or a separately excited DC traction motor. In the series-wound motor/controller configuration, the field and the armature current are separately controlled. In the separately excited motor/controller configuration, the field of the motor is preferably wound so that the rated field current is achieved at about 20% of the rated battery voltage. This provides a separately excited motor in which the field current can be boosted by a factor of 5 to achieve high start-up and low speed torques which match the torque outputs of a series-wound motor under similar operating conditions.
    • 公开了用于两个电机/控制器配置的最佳结构。 控制器结构包括用于使用MOSFET器件的同步整流来控制励磁电流的H桥,以及使用布置在半桥中的MOSFET器件的同步整流来斩波电枢电流的电路。 控制器可以配置有串联缠绕或单独激励的直流牵引电动机。 在串联电机/控制器配置中,励磁和电枢电流分别控制。 在单独激励的电机/控制器配置中,优选地卷绕电动机的场,使得额定励磁电流达到额定电池电压的约20%。 这提供了一个单独激励的电动机,其中励磁电流可以提升5倍,以实现与类似工作条件下的串联电动机的转矩输出相匹配的高启动和低速转矩。