| 摘要 |
<P>PROBLEM TO BE SOLVED: To estimate the electric constant of an induction motor accurately at standstill of a rotor, and to reduce the cost by performing fixed point operation while reducing the operation load. <P>SOLUTION: A controller of an induction motor comprises: a signal operation unit 101 including first and second signal operation means for operating first and second signals, respectively, from a plant input (primary voltage detection value of an induction motor), third and fourth operation means for operating third and fourth signals from a plant output (primary current detection value of an induction motor), means for setting a fifth signal to a fixed value, and means for operating an output estimation value from the internal product of a 5-dimensional signal vector and a 5-dimensional parameter estimation value vector; an adaptive identification device 102 which operates a parameter estimation value vector from the deviation of the output from the output estimation value and the signal vector; and a coefficient operation unit 103 and an electric constant operation unit 104 for operating the electric constant estimation value of an induction motor from the parameter estimation value vector. <P>COPYRIGHT: (C)2013,JPO&INPIT |
