SERVOSYSTEM

专利名称：SERVOSYSTEM

发明人：BOEZEN, HENDRIK,GERLINGS, JEROEN,

ALEXANDER,MOSTERT, FREDERIK

申请号：IB9700278申请日：19970321公开号：WO9738360A3公开日：19971231

摘要：The servosystem includes adjusting means (1) for changing the position of amechanical element (3), a first transducer (5) for forming an adjusting voltage which is ameasure of a desired position of the element, a second transducer (15) for forming aresponse voltage which is a measure of the actual position of the element, and detectionmeans (13) for forming an error signal (If) which is a measure of a difference between theresponse voltage and the adjusting voltage. The detection means (13) have a first and asecond input (11, 21) which are connected to the first transducer and the second

transducer, respectively, and an output (23) which is connected to an input (27) of controlmeans (29) for generating, in dependence on the value of the error signal, a controlsignal (Vc1, Vc2), for controlling the adjusting means. A compensation resistor (31) isinserted in the connection lead (9) between, for example the first transducer (5) and theinput (11) of the detection means (13) connected thereto. The detection means (13)conduct a compensation current through the compensation resistor (31), whichcompensation current causes a voltage drop across the compensation resistor which isequal to the difference between the response voltage and the adjusting voltage, andform the error signal (If) so that its value is proportional to the value of the

compensation current. Consequently, no control signal is applied to the adjusting means(1) if said connection (9) is interrupted.

申请人：PHILIPS ELECTRONICS N.V.,PHILIPS NORDEN AB

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