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1. 发明授权

US4341986A Servo control system for the positioning of an apparatus 失效
标题翻译：用于定位装置的伺服控制系统
公开(公告)号：US4341986A
公开(公告)日：1982-07-27
申请号：US227311
申请日：1981-01-22
申请人： George B. Browder
发明人： George B. Browder
IPC分类号： G05B19/35 , G05D3/14 , G05B5/01
CPC分类号： G05B19/353 , G05D3/1463 , G05B2219/37462 , G05B2219/41477
摘要： A servo control system for the positioning of a projector comprising a dit current motor having the projector connected to the shaft of the motor, and a digital computer for providing command signals to move the projector to a programmed position at a programmed velocity within a predetermined time period. A potentiometer produced an electrical signal indicative of the actual position of the projector, and a tachometer produces an electrical signal indicative of the actual velocity of the projector. Feedback means, in turn, provides a position error signal indicative of the difference between the programmed position and the actual position of the projector, provides a velocity error signal indicative of the difference between the programmed velocity and the actual velocity of the projector, and varies, in response to the position and velocity error signals, the voltage level of the command signal such that the projector will attain the programmed position within the predetermined time period. A forward feed servo enhancer generates, in response to the command signals, a forward feed enchancement signal which when combined with the command signals will reduce the velocity error signal to approximately zero volts. This, in turn, allows the direct current motor, and thus the projector to respond to command signals at frequency rates not to exceed a predetermined frequency.
摘要翻译：一种用于定位投影仪的伺服控制系统，包括具有连接到电动机的轴的投影仪的直流电动机，以及数字计算机，用于提供命令信号，以在预定时间内以编程速度将投影仪移动到编程位置期。电位器产生指示投影仪的实际位置的电信号，并且转速计产生指示投影仪的实际速度的电信号。反馈意味着反过来提供表示编程位置与投影仪实际位置之差的位置误差信号，提供指示编程速度与投影仪实际速度之差的速度误差信号，并且变化响应于位置和速度误差信号，命令信号的电压电平使得投影仪将在预定时间段内达到编程位置。正向进给伺服增强器响应于命令信号产生正向进给加速信号，当与指令信号组合时，该进给加速信号将将速度误差信号减小到大约零伏特。这又允许直流电动机，并且因此投影仪以不超过预定频率的频率响应命令信号。

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