Open-close body controller and motor

Patent metadata

Field	Value
Publication number	US-11142940-B2
Application number	US-201916668375-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Nov 8, 2018
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

An open-close body controller includes a motor, movement interference determination unit, and disturbance determination unit. Motor is configured to open and close an open-close body of vehicle. Movement interference determination unit is configured to detect whether characteristic value of motor, which is varied in accordance with change in load applied to open-close body when moving, is in movement interference range or non-movement interference range bordering threshold value and determine that movement of open-close body has been interfered with by foreign object when characteristic value is in movement interference range. Disturbance determination unit is configured to determine whether motor is subject to effect of disturbance. Movement interference determination unit is configured to correct threshold value to narrow movement interference range based on varied amount of rotation amount of motor that corresponds to movement distance of open-close body when disturbance determination unit determines motor is subject to effect of disturbance.

First claim

The invention claimed is:

1. An open-close body controller comprising:
a motor that opens and closes an open-close body of a vehicle, the motor having a characteristic value that is varied in accordance with a change in a load applied to the open-close body when the open-close body is moving;
a movement interference determination unit configured to detect whether the characteristic value is in a movement interference range or a non-movement interference range bordering a threshold value, and determine that movement of the open-close body has been interfered with by a foreign object when the characteristic value is in the movement interference range; and
a disturbance determination unit configured to determine whether the motor is subject to an effect of disturbance,
wherein the movement interference determination unit is configured to correct the threshold value so as to narrow the movement interference range based on a varied amount of a rotation amount of the motor that corresponds to a movement distance of the open-close body when the disturbance determination unit determines that the motor is subject to the effect of disturbance.

2. The open-close body controller according to claim 1 , wherein the disturbance determination unit is configured to determine that the motor is subject to the effect of disturbance based on a signal indicating that a vehicle door is open.

3. The open-close body controller according to claim 1 , wherein the disturbance determination unit is configured to determine that the motor is subject to the effect of disturbance based on a vehicle speed.

4. The open-close body controller according to claim 1 , wherein the disturbance determination unit is configured to determine that the motor is subject to the effect of disturbance based on a variation of the characteristic value of the motor, which is varied in accordance with a change in a load applied to the open-close body that is moving.

5. A motor comprising:
the open-close body controller according to claim 1 ,
wherein the motor is configured integrally with the open-close body controller.

Assignees

• Denso Corp

Inventors

• Aoshima Hiroki

Classifications

• E05F15/695 Primary

  Control circuits therefor · CPC title

• E05Y2400/51

  of position, of back drive · CPC title

• E05Y2400/504

  of control, of software · CPC title

• E05Y2400/342

  Pulse count value setting or correcting · CPC title

• E05F15/41 Primary

  Detection by monitoring transmitted force or torque (E05F15/48 takes precedence); Safety couplings with activation dependent upon torque or force, e.g. slip couplings · CPC title