Circuitry for determining actuator position
    1.
    发明授权
    Circuitry for determining actuator position 有权
    确定执行器位置的电路

    公开(公告)号:US6078154A

    公开(公告)日:2000-06-20

    申请号:US249339

    申请日:1999-02-12

    IPC分类号: H02P6/08 H02P7/00 H02P7/06

    CPC分类号: H02P6/18 Y10S388/909

    摘要: Circuitry (100, 100') for determining actuator position includes four MOS transistors (T1-T4) connected to each side of a bi-directional motor (10). The current flowing through the motor (10) at any given time is proportional to voltages developed across the internal impedances of the transistors (T1-T4). The resulting motor voltages are amplified and high-pass filtered to remove any DC offsets due to the signal amplification. The conditioned motor voltages are then compared to one or more threshold voltages and passed through a one shot circuit (120) to provide detectable pulses for each motor commutation event. Circuitry (106,107) is provided for counting pulses provided by the one shot circuit (120) and, based on a desired motor position, for providing a number of digital control signals to a digital control circuit (104). Digital control circuit (104) is responsive to the number of digital control signals to control the gate voltages of the four transistors (T1-T4) to thereby control the position of the motor (10).

    摘要翻译: 用于确定致动器位置的电路​​(100,100')包括连接到双向电动机(10)的每一侧的四个MOS晶体管(T1-T4)。 在任何给定时间流过电动机(10)的电流与在晶体管(T1-T4)的内部阻抗上产生的电压成比例。 所产生的电机电压被放大并高通滤波,以消除由于信号放大引起的任何DC偏移。 然后将经调节的电动机电压与一个或多个阈值电压进行比较,并通过一次电路(120)以为每个电动机换向事件提供可检测的脉冲。 电路(106,107)被提供用于对由单触发电路(120)提供的脉冲进行计数,并且基于期望的电动机位置,用于向数字控制电路(104)提供多个数字控制信号。 数字控制电路(104)响应于数字控制信号的数量来控制四个晶体管(T1-T4)的栅极电压,从而控制电动机(10)的位置。

    Control method and apparatus for two-wire motor actuator
    2.
    发明授权
    Control method and apparatus for two-wire motor actuator 失效
    双线马达执行器的控制方法和装置

    公开(公告)号:US5744925A

    公开(公告)日:1998-04-28

    申请号:US715282

    申请日:1996-09-16

    申请人: Wayne Alan Madsen

    发明人: Wayne Alan Madsen

    摘要: An actuator for automotive HVAC control is coupled to a remote controller by two wires. The controller applies power to the actuator in a high current or a low current mode. A variable resistance driven by the actuator generates a voltage proportional to position in the low current mode. Zener diodes in the actuator circuit prevent motor operation in the low current mode and permit motor operation in the high current mode. A microprocessor in the controller selects the mode and reads the voltage in low mode to determine position. It controls the motor for a duration required to reach a desired position and then checks the new position to verify that the target has been reached. If not, another iteration is employed to reach the target.

    摘要翻译: 用于汽车HVAC控制的致动器通过两根线连接到遥控器。 控制器以高电流或低电流模式向执行器供电。 由致动器驱动的可变电阻器在低电流模式下产生与位置成比例的电压。 执行器电路中的齐纳二极管阻止电机在低电流模式下工作,并允许电机在高电流模式下工作。 控制器中的微处理器选择模式,并以低模式读取电压以确定位置。 它控制电机达到所需位置所需的持续时间,然后检查新位置以验证目标是否到达。 如果没有,则采用另一个迭代来达到目标​​。