| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device that can accurately measure the Rs and Ls of a motor, irrespective of a capacity of the motor. <P>SOLUTION: The control device that controls the motor in terms of a variable voltage and a variable frequency, by using an inverter 1 of the motor 2 comprises a means 10 that measures a constant of the motor, controls an output frequency f1 of output torque iq to zero, accumulatively adds the motor winding resistance value Rs to the product of the current value id and the voltage value Vd, obtains the added value by dividing it with an accumulated and added value of the square value of the current id, accumulatively adds the inductance value Ls to a product of an accumulated and added value of the voltage value Vd and the current id; and measures the accumulated and added value, by dividing a square value of the current id with the accumulated and added value. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
