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US5082096A
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Control apparatus for an automatic clutch device
Assignee: Mitsubishi Electric Corp
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Filing: 1990-10-04
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Granted: 1992-01-21
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Expires: 2010-10-04
Abstract
Abstract A control apparatus for an automatic clutch device which comprises a primary pressure controlling valve for controlling a primary pressure in an oil clutch, a line pressure controlling valve for controlling a line pressure in the oil clutch, a clutch pressure controlling valve for controlling a clutch pressure in the oil clutch, first, second and third electromagnetic valves for controlling respectively the primary pressure controlling valve, the line pressure controlling valve and the clutch pressure controlling valve, and a control section which controls the first, second and third electromagnetic valves and effects a feed-back control of engine speed to the third electromagnetic valve, and which stores values obtained by the learning of feedback quantities of the engine speed until the last time and changes a clutch pressure control duty to the third electromagnetic valve by modifying a feed forward quantity with the value by learning.
Inventors
- 👤 Yoshinori Yamashita
- 👤 Hiroaki Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:06
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/06; F16D48/066; B; B60; B60W; B60W50/00; B60W2050/0001; B60W2050/0002; B60W2050/0008; B60W2050/001; B60W2050/0011; B60W2050/0012; B60W2050/0043; B60W2050/0052; B60W2540/00; B60W2540/10; B60W2710/00; B60W2710/06; B60W2710/0644; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1026; F16D2500/70; F16D2500/704; F16D2500/70452; F16D2500/70454
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
180 words
A control apparatus for an automatic clutch device comprising: a primary pressure controlling valve for controlling a primary pressure in an oil clutch, a line pressure controlling valve for controlling a line pressure in the oil clutch, a clutch pressure controlilng valve for controlling a clutch pressure in the oil clutch, first, second and third electromagnetic valves for controlling respectively the primary pressure controlling valve, the line pressure controlling valve and the clutch pressure controlling valve, engine speed sensing means for sensing a speed of said engine, and a control section which is coupled to and which controls the first, second and third electromagnetic valves, wherein said control section includes means for performing a feed-back control of said engine speed to the third electromagnetic valve, means for learning feed-back quantities of said engine speed, means for modifying a feed-forward quantity, means for storing values representing engine speed obtained by learning feed-back quantities of the engine speed and means for changing a clutch pressure control duty of the third electromagnetic valve by modifying said feed-forward quantity by the last value learned.
Claim 2
Dependent Claim
180 words
A control apparatus for an automatic clutch device comprising: a primary pressure controlling valve for controlling a primary pressure in an oil clutch, a line pressure controlling valve for controlling a line pressure in the oil clutch, a clutch pressure controlilng valve for controlling a clutch pressure in the oil clutch, first, second and third electromagnetic valves for controlling respectively the primary pressure controlling valve, the line pressure controlling valve and the clutch pressure controlling valve, engine speed sensing means for sensing a speed of said engine, and a control section which is coupled to and which controls the first, second and third electromagnetic valves, wherein said control section includes means for performing a feed-back control of said engine speed to the third electromagnetic valve, means for learning feed-back quantities of said engine speed, means for modifying a feed-forward quantity, means for storing values representing engine speed obtained by learning feed-back quantities of the engine speed and means for changing a clutch pressure control duty of the third electromagnetic valve by modifying said feed-forward quantity by the last value learned.
Claim 3
Dependent Claim
71 words
The control apparatus for an automatic clutch device according to claim 1, further comprising a feed-forward quantity determining means for determining a feed-forward quantity, wherein the control section further includes a learned value determining means for determining the values obtained by the learning of feed-back quantities of engine speed, and an adder to sum the output of the learned value determining means and the output of said feed-forward quantity determining means.
Claim 4
Dependent Claim
33 words
The control apparatus for an automatic clutch device according to claim 2, further comprising a first order lag filter means for processing the output of the adder by a first order lag function.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-20 | 1995-07-22 | 1996-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-20 | 1999-07-22 | 2000-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-20 | 2003-07-22 | 2004-01-21 | $7700.00 | Window Closed / Lapsed |