VACUUM INSULATION MATERIAL, AND MANUFACTURING METHOD FOR SAME

For the purpose of obtaining a micro-step driving control apparatus for a stepping motor in which torque fluctuations caused by the influence of detent torque can be reduced without performing preliminary driving, the apparatus is comprised of a phase difference estimator for calculating, based on d...

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Bibliographische Detailangaben
Hauptverfasser:	SUZUKI, Shunkei, SHINOKI, Toshio
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING BUILDING CEILINGS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FLOORS FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL GENERAL BUILDING CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERATION HEATING INSULATION OR OTHER PROTECTION OF BUILDINGS JOINTS OR FITTINGS FOR PIPES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES RANGES ROOFS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING VENTILATING WALLS, e.g. PARTITIONS WEAPONS
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Beschreibung
Zusammenfassung:	For the purpose of obtaining a micro-step driving control apparatus for a stepping motor in which torque fluctuations caused by the influence of detent torque can be reduced without performing preliminary driving, the apparatus is comprised of a phase difference estimator for calculating, based on detected current of the motor and a command value, an estimated phase difference between the command value and the current; a low-speed motor rotational angle estimator for calculating, based on the detected current and a micro-step driving signal, an estimated motor rotational angle ¸ MEL at a low speed rotation; a high-speed motor rotational angle estimator for calculating, based on the estimated phase difference and the command value, an estimated motor rotational angle ¸ MEH at a high speed rotation; an addition unit for calculating, based on the command value, an estimated motor rotational angle ¸ ME by mixing the estimated motor rotational angles ¸ MEL and ¸ MEH at an appropriate rate; a detent torque estimator for calculating, based on the estimated motor rotational angle ¸ ME , estimated detent torque; and a compensation signal generator for generating a compensation signal based on the estimated detent torque and the estimated motor rotational angle ¸ ME .