专利名称：Servo-system
发明人：Nobuo Kaieda,Yoshihiro Okano申请号：US05/8817申请日：19771227公开号：US04232259A公开日：19801104
摘要：A servo-system includes a high-gain direct-coupled direct current (dc)differential amplifier to which a dc input signal is fed. An adder adds the dc amplifieroutput to a comparison voltage, and the adder output is applied through a filter circuitto a second input of the differential dc amplifier. A servo-amplifier drives a servo-motorin accordance with the dc amplifier output. Means are provided for zero- balancing the dcamplifier output while varying the comparison voltage by the servo-motor.
申请人：YOKOGAWA ELECTRIC WORKS, LTD.
代理机构：Parmelee, Johnson, Bollinger & Bramblett
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