DIGITAL SERVO-CONTROLLING METHOD

PURPOSE:To prevent a motor speed from being fluctuated, by setting a state observing device for estimating disturbance torque to focus a difference between an actual speed and an estimated speed to be zero, and by correcting torque command applied to a servo-motor from torque estimated by the state...

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Bibliographic Details
Main Authors IWASHITA HEISUKE, SAKAMOTO KEIJI
Format Patent
LanguageEnglish
Published 06.12.1989
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:PURPOSE:To prevent a motor speed from being fluctuated, by setting a state observing device for estimating disturbance torque to focus a difference between an actual speed and an estimated speed to be zero, and by correcting torque command applied to a servo-motor from torque estimated by the state observing device. CONSTITUTION:An arithmetic device 11 outputs a speed difference between a command speed VCMD and a motor speed XI(i) to an integrator 12. Besides, an arithmetic device 14 outputs a difference between the output of the integrator 12 and the output of a comparator 13 as torque command. In the meantime, a state observing device 50 receives the motor speed XI(i) and torque command u(i) and estimates disturbance torque to focus a deviation between an actual speed and an estimated speed to be zero, and the output of the estimated disturbance torque X2(i) is directed to a torque command correcting section 15 via a gain setting section 70. The torque command correcting section 15 feeds the corrected torque command u(i) to a motor.
Bibliography:Application Number: JP19880132143