METHOD OF ESTIMATING LOAD INERTIA FOR A MOTOR

A method of estimating load inertia for a motor is provided that can estimate the load inertia even when a cogging torque of the motor is large or resonance occurs in the mechanical system of the load. Vibration is detected in an acceleration feedback signal. An estimated inertia gain Kn is multipli...

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Bibliographische Detailangaben
1. Verfasser:	IDE YUUJI
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS GENERATION MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TESTING
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Beschreibung
Zusammenfassung:	A method of estimating load inertia for a motor is provided that can estimate the load inertia even when a cogging torque of the motor is large or resonance occurs in the mechanical system of the load. Vibration is detected in an acceleration feedback signal. An estimated inertia gain Kn is multiplied by a coefficient alpha of zero (0) or more but less than one (1) when the detected vibration is equal to or more than a predetermined level, or the estimated inertia gain Kn is multiplied by a coefficient alpha of one (1) when the detected vibration is less than the predetermined level.