Frequency domain auto-tune for an internal motor controller
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United States of America Patent
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-
Sep 16, 2003
Grant Date -
Feb 14, 2002
app pub date -
Jun 5, 2001
filing date -
Aug 14, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A built-in auto-tuning system of a motor control system provides an auto-tuning of the motor control system. The built-in tuning system generates and applies a random noise test signal to the controller. In response to the test signals, the tuning system obtains response data such as the gains and phases over a wide range of operating frequencies. Based on the received data, the tuning system generates an open-loop Bode plot of the control system. The tuning system then calculates the phase and gain margins of the control system. The calculated gain and phase margins are compared with a set of predetermined values by the tuning system to automatically adjust the compensation parameters of the motor control system for a stable operation.
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