Method and apparatus for adaptive control
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United States of America Patent
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Nov 29, 1994
Issued Date -
N/A
app pub date -
Apr 10, 1992
filing date -
Mar 31, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and apparatus for controlling a plant are described. The control methods are adaptive and compensate for changes in plant component characteristics and plant environment, and are applicable to systems having a bias force. The methods are described in relation to a sampled-data control system for a computer disc drive servo actuator apparatus but the control methods are independent of plant type. Methods for extending a linear measurement range of a position sensor, for generating a plant gain constant, for measuring plant phase, for measuring plant resonance frequencies and compensating for the effects of plant resonance, and for switching between different modes depending on characteristics of the applied control value are described. These methods may be used separately or in combination to achieve the desired control.
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