Abstract: A motor controller, comprising a first simulation control unit (8) and a second simulation control unit (9) as a feed forward control means for inputting a command to an actual control unit (10) performing a feedback control, wherein the control parameter of the first simulation control unit (8) is set so that the high-speed property of a control response is increased, and the control parameter of the second simulation control unit (9) is set so that the stability of the control response is increased, whereby an entire feed forward control means can be designed so as to meet the requirements for the high-speed property and high stability of the control response.

Abstract: Host control section 8 is provided with simulation model 8c for simulating the signal transmission characteristics of an electric motor control device. Host control section 8 performs an operation on the actual position command signal ?ref that is supplied from the host device in accordance with the simulation model, calculates the speed and position of the electric motor corresponding to the actual position command signal ?ref, and applies this speed and position as first simulation speed signal ?F and first simulation position signal ?F, respectively, with each second control sampling period t2. Host control section 8 further generates a linear combination of ?ref??F and ?F using, as combination coefficients, constants determined by parameters that characterize the simulation model, and supplies this linear combination as feedforward torque signal TFF for each second control sampling period t2.

Abstract: There are performed converting electric currents Iu, Iv, and Iw flowing through the synchronous motor into a d-axis actual current Idfb and a q-axis actual current Iqfb on rotational coordinate axes which rotate synchronously with a rotor magnetic flux vector, on the basis of an actual position ? of the rotor of the synchronous motor; estimating a d-axis simulated current Idob and a q-axis simulated current Iqob on the basis of the d-axis actual current Idfb, the q-axis actual current Iqfb, a d-axis actual voltage command Vdref, and a q-axis actual voltage command Vqref; generating a d-axis actual voltage command Vdref and a q-axis actual voltage command Vqref on the basis of a d-axis current command Idref, a q-axis current command Iqref, a d-axis simulated current Idob, and a q-axis simulated current Iqob; and converting the d-axis actual voltage command Vdref and the q-axis actual voltage command Vqref into actual voltage commands Vuref, Vvref, and Vwref on the basis of the actual position ? of a rotor of t

Abstract: There are performed converting electric currents Iu, Iv, and Iw flowing through the synchronous motor into a d-axis actual current Idfb and a q-axis actual current Iqfb on rotational coordinate axes which rotate synchronously with a rotor magnetic flux vector, on the basis of an actual position &thgr; of the rotor of the synchronous motor; estimating a d-axis simulated current Idob and a q-axis simulated current Iqob on the basis of the d-axis actual current Idfb, the q-axis actual current Iqfb, a d-axis actual voltage command Vdref, and a q-axis actual voltage command Vqref; generating a d-axis actual voltage command Vdref and a q-axis actual voltage command Vqref on the basis of a d-axis current command Idref, a q-axis current command Iqref, a d-axis simulated current Idob, and a q-axis simulated current Iqob; and converting the d-axis actual voltage command Vdref and the q-axis actual voltage command Vqref into actual voltage commands Vuref, Vvref, and Vwref on the basis of the actual position &thgr; of a

Abstract: Host control section 8 is provided with simulation model 8c for simulating the signal transmission characteristics of an electric motor control device. Host control section 8 performs an operation on the actual position command signal &thgr;ref that is supplied from the host device in accordance with the simulation model, calculates the speed and position of the electric motor corresponding to the actual position command signal &thgr;ref, and applies this speed and position as first simulation speed signal &ohgr;F and first simulation position signal &thgr;F, respectively, with each second control sampling period t2. Host control section 8 further generates a linear combination of &thgr;ref−&thgr;F and &ohgr;F using, as combination coefficients, constants determined by parameters that characterize the simulation model, and supplies this linear combination as feedforward torque signal TFF for each second control sampling period t2.

Abstract: A motor controller, comprising a first simulation control unit (8) and a second simulation control unit (9) as a feed forward control means for inputting a command to an actual control unit (10) performing a feedback control, wherein the control parameter of the first simulation control unit (8) is set so that the high-speed property of a control response is increased, and the control parameter of the second simulation control unit (9) is set so that the stability of the control response is increased, whereby an entire feed forward control means can be designed so as to meet the requirements for the high-speed property and high stability of the control response.