Mitsuba Corporation

Kenichi Hirano

Masahiro Fueki

Narimitsu Kobori

Takayuki Kawakura

Akira Kadoya

Justin Valencia

Takao Arai

Provided is a motor control device which can accurately perform velocity control over a sliding door. The motor control device has a control unit which determines a command value for a duty ratio such that a moving velocity of the sliding door of a vehicle follows a target velocity set in advance while the sliding door is being opened and closed. The motor control device includes a plurality of upper stage switching elements that are connected between terminals of windings of the electric motor and the power source, and a plurality of lower stage switching elements that are connected between the terminals and a ground potential. The control unit causes all the upper stage switching elements or all the lower stage switching elements to be in a turned-on state in accordance with the command value.

Motor control device

The control device for a closure member of a vehicle according to the present invention comprises: estimated load calculation means () for obtaining an estimated load from a rotation speed, acceleration, and drive voltage of a DC motor () for driving a closure member (); motor torque calculation means () for calculating a motor torque from the rotation speed and drive voltage of the motor; reference torque calculation means () for calculating a reference torque based on a stationary state of the motor torque; and pinching determination means () for determining a pinching of an object based on the estimated load, motor torque and reference torque, wherein the pinching determination means determines that there is no pinching when at least one of the estimated load and the motor torque is below the reference torque even when the estimated load is greater than a prescribed threshold value.

Control device for a closure member of a vehicle

Growing community of inventors

Novi, MI, United States of America

Kenichi Hirano