Controller, control method, and clutch controller

Patent metadata

Field	Value
Publication number	US-2019249727-A1
Application number	US-201916267661-A
Country	US
Kind code	A1
Filing date	Feb 5, 2019
Priority date	Feb 15, 2018
Publication date	Aug 15, 2019
Grant date	—

Abstract

A controller according to an embodiment that controls a control object by driving a motor includes an estimation unit and a switching unit. The estimation unit estimates a load of the control object on the basis of a value of a current applied to the motor. The switching unit switches control contents between learning control in which learning is performed on the basis of the load estimation and normal control other than the learning control. The control contents in the learning control cause the current fluctuation in the learning control to be further reduced than that in the normal control using other control contents.

First claim

What is claimed is:

1 . A controller that controls a control object by driving a motor, the controller comprising:
an estimation unit that estimates a load of the control object on the basis of a value of a current applied to the motor; and a switching unit that switches control contents between learning control in which learning is performed on the basis of the load estimation and normal control other than the learning control, wherein the control contents in the learning control cause current fluctuation in the learning control to be further reduced than the current fluctuation in the normal control using other control contents.

2 . The controller according to claim 1 , wherein the switching unit switches the control contents from the control contents in the normal control to the control contents in the learning control only at certain timing.

3 . The controller according to claim 2 , wherein the switching unit stops the normal control at the certain timing.

4 . The controller according to claim 1 , wherein
the control object is controlled on the basis of feedback control performed on the motor, and the switching unit switches at least one of a speed command value map corresponding to an actual rotation angle of the motor, a feedback gain, a filter, and a pulse width modulation frequency in the control contents.

5 . The controller according to claim 2 , wherein
the control object is controlled on the basis of feedback control performed on the motor, and the switching unit switches at least one of a speed command value map corresponding to an actual rotation angle of the motor, a feedback gain, a filter, and a pulse width modulation frequency in the control contents.

6 . The controller according to claim 3 , wherein
the control object is controlled on the basis of feedback control performed on the motor, and the switching unit switches at least one of a speed command value map corresponding to an actual rotation angle of the motor, a feedback gain, a filter, and a pulse width modulation frequency in the control contents.

7 . The controller according to claim 2 , wherein
the control object and the motor are mounted on a vehicle, and the switching unit performs the switching at timing when an ignition switch of the vehicle is turned off and the timing is the certain timing.

8 . The controller according to claim 3 , wherein
the control object and the motor are mounted on a vehicle, and the switching unit performs the switching at timing when an ignition switch of the vehicle is turned off and the timing is the certain timing.

9 . A control method using a controller that controls a control object by driving a motor, the control method comprising:
estimating a load of the control object on the basis of a value of a current applied to the motor; and switching control contents between learning control in which learning is performed on the basis of the load estimation and normal control other than the learning control, wherein the control contents in the learning control cause current fluctuation in the learning control to be further reduced than the current fluctuation in the normal control using other control contents.

10 . A clutch controller that controls a clutch of a vehicle by driving a motor, the clutch controller comprising:
an estimation unit that estimates a load of clutch control on the basis of a value of a current applied to the motor; and a switching unit that switches control contents in clutch engagement operation or clutch disengagement operation between learning control in which learning is performed on the basis of the load estimation and normal control other than the learning control, wherein the control contents in the learning control cause current fluctuation in the learning control to be further reduced than the current fluctuation in the normal control using other control contents.

Assignees

• Denso Ten Ltd

Inventors

• Kurokawa Ryosuke

Classifications

• F16D2500/70615

  PI control · CPC title

• F16D2500/70668

  Signal filtering · CPC title

• F16D2500/3069

  Engine ignition switch · CPC title

• F16D2500/70605

  Adaptive correction; Modifying control system parameters, e.g. gains, constants, look-up tables · CPC title

• F16D2500/1023

  Electric motor · CPC title