Shift range control device
AssigneeDenso Corporation
InventorShigeru KAMIO
Life of this patent
Estimating the term…
Abstract
A shift range switching control device for switching a shift range by controlling driving of a motor includes a feedback control section, a stationary phase energization control section, and a switching control section. The feedback control section performs a feedback control based on an actual angle of the motor, and a motor speed. The stationary phase energization control section performs a stationary phase energization control which energizes a stationary phase selected according to the actual angle. The switching control section switches the control state of the motor.
Claims8
A shift range control device for switching a shift range by controlling driving of a motor, the shift range control device comprising:
- an angle computing section configured to compute an actual angle of the motor based on a signal of a rotation angle sensor that detects a rotation angle of the motor;
- a speed computing section configured to compute a motor speed, which is a rotation speed of the motor, based on the actual angle;
- a feedback control section configured to perform a feedback control based on the actual angle and the motor speed;
- a stationary phase energization control section configured to perform a stationary phase energization control which energizes a stationary phase selected according to the actual angle;
- and
- a switching control section configured to switch a control state of the motor, wherein:
- the feedback control section includes
- a target speed setting section that sets a target speed of the motor based on an angular deviation which is a deviation between a target angle determined according to a request shift range and the actual angle, and
- a controller that computes a feedback duty command value to cause the target speed and the motor speed to coincide with each other;
- the switching control section selects the feedback control for the control state when the request shift range is switched;
- and
- the switching control section switches the control state from the feedback control to the stationary phase energization control when the angular deviation is equal to or smaller than an angle determination threshold.
A shift range control device for switching a shift range by controlling driving of a motor, the shift range control device comprising:
- a microcomputer configured to
- compute an actual angle of the motor based on a signal of a rotation angle sensor that detects a rotation angle of the motor;
- compute a motor speed, which is a rotation speed of the motor, based on the actual angle;
- perform a feedback control based on the actual angle and the motor speed;
- perform a stationary phase energization control which energizes a stationary phase selected according to the actual angle;
- and
- switch a control state of the motor, wherein
- in the feedback control, the microcomputer sets a target speed of the motor based on an angular deviation which is a deviation between a target angle determined according to a request shift range and the actual angle, and computes a feedback duty command value to cause the target speed and the motor speed to coincide with each other,
- the microcomputer selects the feedback control for the control state when the request shift range is switched;
- and
- the microcomputer switches the control state from the feedback control to the stationary phase energization control when the angular deviation is equal to or smaller than an angle determination threshold.
Dependencies are inferred from the claim text.