DRIVE CONTROLLER

PROBLEM TO BE SOLVED: To control the drive of an SMA actuator precisely in simple and low-cost circuit constitution which does not need a resistance value detecting circuit or a dividing circuit (CPU). SOLUTION: A drive controller includes a fixed resistor which is connected in series to shape momer...

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Bibliographische Detailangaben
Hauptverfasser:	AOI TAKESHI, TANIMURA YASUTAKA
Format:	Patent
Sprache:	eng
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY BLASTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER SPRING, WEIGHT, INERTIA OR LIKE MOTORS WEAPONS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To control the drive of an SMA actuator precisely in simple and low-cost circuit constitution which does not need a resistance value detecting circuit or a dividing circuit (CPU). SOLUTION: A drive controller includes a fixed resistor which is connected in series to shape momery alloy, a detecting means which detects the voltage values applied to each of the shape momery alloy and the fixed resistor, a driving means which supplies the shape memory alloy with power via the fixed resistor and energizes and heats it, and a control means which controls the amount of drive of the above driving means, based on the information about each voltage value detected by the above detecting means. The above control means controls the amount of drive of the above driving means by controlling the ratio of the voltage values applied to each of the above shape memory alloy and the fixed resistor. COPYRIGHT: (C)2009,JPO&INPIT