Method for the positioning of an actuator
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United States of America Patent
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Dec 29, 1998
Issued Date -
N/A
app pub date -
Mar 27, 1997
filing date -
Oct 15, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An acknowledgement-free method for the positioning of an actuator by means of an electric motor which is controlled as a function of time by a microprocessor, wherein there are proportionality constants K.sub.1, K.sub.2 of a formula Adjustment Path=K.multidot.Adjustment Time as well as the corresponding times T.sub.1, T.sub.2 for the braking of the rotor, after disconnection of the electric motor, from a first speed of rotation N.sub.a to a second speed of rotation N.sub.b. The constant K.sub.1 and K.sub.2 are the times T.sub.1 and T.sub.2 are determined and stored for the structural unit consisting of actuator and electric motor at at least two different loads B.sub.1, B.sub.2. Upon operation of the actuator, the time T.sub.x for the braking of the rotor from N.sub.a to N.sub.b is measured and, with the use of the stored times T.sub.1, T.sub.2, the proportionality constant K.sub.x corresponding to the time T.sub.x is calculated by linear interpolation and used for the control.
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