Abstract
A high-performance optimal position servo is proposed for a microcomputer-controlled induction motor. The servo is designed and realized by top-down computer-aided design (CAD). A field-orientation-control approach is adopted to design an optimal voltage-controlled regulator for position control. A type of globally stable and parameter insensitive observer-linearizer is presented and utilized to overcome the restricted availability of sensed variables: winding voltages and currents, and shaft speed and angle. The digital scheme has been experimentally tested and verified. The effect of quantization errors and sampling period in analog/digital analog on the response and accuracy of the control system is shown. >
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