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    • 4. 发明授权
    • Feedback system for robot controller
    • 机器人控制器反馈系统
    • US4481569A
    • 1984-11-06
    • US391515
    • 1982-06-24
    • Samir A. Hoodbhoy
    • Samir A. Hoodbhoy
    • B25J9/18G05B19/23G05B19/18
    • G05B19/23G05B2219/37152G05B2219/45083
    • A feedback system for a robot controller provides feedback signals representing incremental motion along an axis in either a first or second direction based upon a pair of encoder signals from a position encoder. The feedback system includes circuitry which produces a pair of signals indicating the state of the first encoder signal and whether the first encoder signal has changed state, and circuitry which produces a pair of signals indicating the state of the second encoder signal and whether the second encoder signal has changed state. A read only memory receives these four signals at its address inputs and produces the first and second feedback signals at its data outputs based upon stored microcode. The encoder signals may be in the form of pulsed up/down feedback, where one of the two encoder signals contains pulses and the other encoder signal remains unchanged. Alternatively, the encoder signals may be in the form of sinusoidal or squarewave quadrature feedback in which a quarter cycle lead/lag relationship exists between the first and second encoder signals to indicate the direction of movement.
    • 用于机器人控制器的反馈系统基于来自位置编码器的一对编码器信号,提供表示沿第一或第二方向的轴的增量运动的反馈信号。 反馈系统包括产生指示第一编码器信号的状态的一对信号以及第一编码器信号是否已经改变状态的电路,以及产生指示第二编码器信号的状态的一对信号的电路以及第二编码器 信号已经改变状态。 只读存储器在其地址输入处接收这四个信号,并且基于存储的微码在其数据输出端产生第一和第二反馈信号。 编码器信号可以是脉冲上升/下降反馈的形式,其中两个编码器信号中的一个包含脉冲,而另一个编码器信号保持不变。 或者,编码器信号可以是正弦波或方波正交反馈的形式,其中在第一和第二编码器信号之间存在四分之一周期的前导/滞后关系以指示移动方向。