US 2013/0076283 A1 · MOTOR CONTROL UNIT AND MOTOR CONTROL UNIT FOR VEHICLE STEERING APPARATUS

Abstract

A motor control unit controls a motor including a rotor and a stator facing the rotor. A current drive unit drives the motor at an axis current value of a rotating coordinate system that rotates in accordance with a control angle that is a rotational angle used in a control. An addition angle calculation unit calculates an addition angle to be added to the control angle. A control angle calculation unit obtains, at every predetermined calculation cycle, a present value of the control angle by adding the addition angle that is calculated by the addition angle calculation unit to an immediately preceding value of the control angle. A torque detection unit detects a torque that is other than a motor torque and that is applied to a drive target driven by the motor. A command torque setting unit sets a command torque to be applied to the drive target. An addition angle correction unit compares the command torque set by the command torque setting unit with the detected torque detected by the torque detection unit, and corrects the addition angle based on a comparison result.

Claims18

Dependent claims

A motor control unit that is used to control a motor that includes a rotor and a stator that faces the rotor, comprising:

a current drive unit that drives the motor at an axis current value of a rotating coordinate system that rotates in accordance with a control angle that is a rotational angle used in a control;
an addition angle calculation unit that calculates an addition angle that is to be added to the control angle;
a control angle calculation unit that obtains, at every predetermined calculation cycle, a present value of the control angle by adding the addition angle that is calculated by the addition angle calculation unit to an immediately preceding value of the control angle;
a torque detection unit that detects a torque that is other than a motor torque and that is applied to a drive target that is driven by the motor;
a command torque setting unit that sets a command torque that is to be applied to the drive target;
and
an addition angle correction unit that compares the command torque that is set by the command torque setting unit with the detected torque that is detected by the torque detection unit, and corrects the addition angle based on a result of comparison.

4 more elements

A motor control unit for a vehicle steering apparatus that has a motor that includes a rotor and a stator that faces the rotor, and a vehicle steering mechanism to which a drive power is applied by the motor, comprising:

a current drive unit that drives the motor at an axis current value of a rotating coordinate system that rotates in accordance with a control angle that is a rotational angle used in a control;
an addition angle calculation unit that calculates an addition angle that is to be added to the control angle;
a control angle calculation unit that obtains, at every predetermined calculation cycle, a present value of the control angle by adding the addition angle that is calculated by the addition angle calculation unit to an immediately preceding value of the control angle;
a torque detection unit that detects a steering torque that is applied to an operation member;
a command steering torque setting unit that sets a command steering torque that is to be applied to the operation member;
and
an addition angle correction unit that compares the command steering torque that is set by the command steering torque setting unit with the detected steering torque that is detected by the torque detection unit, and corrects the addition angle based on a result of comparison.

4 more elements

Dependencies are inferred from the claim text.

Motor control unit and motor control unit for vehicle steering apparatus

Life of this patent

Motor control unit and motor control unit for vehicle steering apparatus

Life of this patent

Abstract

Claims18