Aisin Seiki Kabushiki Kaisha

Xiaoou Ma

Yoshihide Suzuki

Yuichiro Kitamura

Tomohiro Fukushima

Chiaki Umemura

Akemi Okawa

A driving control device of a motor includes a phase current control device for controlling a phase current which is fed to a phase coil of each phases of a motor in a predetermined control period of each phase coils so as to become a predetermined target current, respectively, a convergent control device for converging the phase current after the end of the control period of each phase coils and a driving signal generating device for generating a driving signal which controls the end timing of the phase current convergent control by the convergent control device so that the phase current convergent control is ended between a timing at which a reverse torque is generated by the phase current and the end timing of the control period for next phase coil.

Driving control device of a motor

A switched reluctance motor is provided with multi-phase coils on the stator poles. An energization on angle, a first energization off angle, a second energization off angle and a target value corresponding to an angle of rotation are determined with respect to each coil on the basis of a target torque and a rotation speed. A pair of transistors which act as switching elements are both turned on when the angle of rotation is reached at the energization on angle. One transistor is turned off if a value of an actual current is target value of the current while the angle of rotation is not reached at the first energization off angle. The same transistor is turned off irrespective of the magnitude of the value of the actual current and the target value of the current when the angle of rotation is reached at the first energization off angle. The transistors are both turned off when the angle of rotation is reached at the second energization off angle.

Growing community of inventors

Kariya, Japan

Xiaoou Ma