Patent ID: 6548981
Filing Date: 2003-04-15
Classification: H02K,Y10S

Abstract:
An actuator device, comprising:a housing; a freely rotatable rotor axis supported within the housing; driving means for driving the rotor axis, the driving means being rotatable about the rotor axis and stored within the housing; control means for controlling the rotation of the rotor axis via the driving means, the control means being provided within the housing; rotor axis rotation displacement detection means for detecting a rotation displacement of the rotor axis, the rotation displacement detection means being provided in the housing; torque amplification means for amplifying rotation torque output from the rotor axis; an output axis for rotating based on the rotation torque amplified by the torque amplification means; an output axis rotation displacement detection means for detecting a rotation displacement of the output axis; and calculation means, wherein the torque amplification means has reversible driving power sufficient for an input axis to generate a displacement corresponding to load torque externally given to the output axis, and the calculation means detects the load torque based on the detection results of the rotor axis rotation displacement detection means and the output axis displacement detection means.