Control device for clutch

Patent metadata

Field	Value
Publication number	US-11286998-B2
Application number	US-201816753719-A
Country	US
Kind code	B2
Filing date	Oct 5, 2018
Priority date	Oct 5, 2017
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

A control device for a clutch, which is provided between an operation machine and a drive shaft of an engine, controls an operation of a valve member for opening and closing an oil supply port through which an oil reservoir chamber and a torque transmission chamber communicate. The control device refers to a desired rotation speed of a rotating body of the operation machine and to an acquired rotation speed of the rotating body of the operation machine, calculates a proportional term manipulated variable based on a deviation between an angular acceleration of the rotating body and a desired angular acceleration, and controls the operation of the valve member on the basis of this calculated proportional term manipulated variable.

First claim

The invention claimed is:

1. A control device for a clutch provided between a drive shaft and an operation machine,
wherein the control device is configured to control an operation of a valve member for opening and closing an oil supply port that communicates an oil reservoir chamber with a torque transmission chamber, so as to adjust an amount of oil supplied from the oil reservoir chamber to the torque transmission chamber in the clutch, and
the control device comprises:
a first calculation unit that calculates a desired rotation speed of a rotating body of the operation machine with reference to acquired information on the operation machine;
a second calculation unit that calculates a proportional term manipulated variable based on a deviation between an angular acceleration and a desired angular acceleration of the rotating body with reference to the desired rotation speed of the rotating body of the operation machine calculated by the first calculation unit and an acquired rotation speed of the rotating body of the operation machine; and
a valve member control unit that controls an operation of the valve member based on the proportional term manipulated variable calculated by the second calculation unit.

2. The control device for the clutch according to claim 1 , further comprising:
a third calculation unit that calculates a feedforward manipulated variable with reference to the desired rotation speed of the rotating body of the operation machine calculated by the first calculation unit and an acquired rotation speed of the drive shaft; and
a fourth calculation unit that calculates an integral term manipulated variable with reference to the desired rotation speed of the rotating body of the operation machine calculated by the first calculation unit and an acquired rotation speed of the rotating body of the operation machine,
wherein the valve member control unit controls an operation of the valve member based on the proportional term manipulated variable calculated by the second calculation unit, the feedforward manipulated variable calculated by the third calculation unit, and the integral term manipulated variable calculated by the fourth calculation unit.

3. The control device for the clutch according to claim 2 ,
wherein the operation machine is a cooling fan of an engine.

4. The control device for the clutch according to claim 2 ,
wherein the operation machine is a coolant pump of an engine.

5. The control device for the clutch according to claim 1 ,
wherein the operation machine is a cooling fan of an engine.

6. The control device for the clutch according to claim 1 ,
wherein the operation machine is a coolant pump of an engine.

Assignees

• Isuzu Motors Ltd

Inventors

• Takahashi Yusuke

Classifications

• F16D2500/10418

  Accessory clutch, e.g. cooling fan, air conditioning · CPC title

• F16D2500/5041

  Control of engine accessories, e.g. air conditioning, pumps, auxiliary drive · CPC title

• F16D2500/10468

  Fluid adhesion clutch · CPC title

• F16D48/064 Primary

  Control of electrically or electromagnetically actuated clutches (F16D48/062, F16D48/068 take precedence) · CPC title

• F01P7/042

  using fluid couplings (couplings or clutches of this type per se F16D35/00) · CPC title