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Control for electrically actuated shifting mechanism

A shifting mechanism and motor controller technology, applied in the direction of non-electric variable control, transmission device control, control device, etc., can solve problems such as overshoot and inability to reduce frictional resistance

Inactive Publication Date: 2004-06-30
EATON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although, prior art motor-driven shifting mechanisms are generally good, they are in need of improvement, such as the typical immediate control of the stepper motor and keeping the motor at the maximum target current, which often results in Overshoot tends to force, unable to reduce total frictional resistance

Method used

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  • Control for electrically actuated shifting mechanism
  • Control for electrically actuated shifting mechanism
  • Control for electrically actuated shifting mechanism

Examples

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Embodiment Construction

[0030] The automatic mechanical transmission system 100 of the present invention that effectively utilizes the control type of the electric drive shift mechanism can be understood by referring to FIG. 4 . System 100 includes an internal combustion engine 102 that at least partially drives an automatic mechanical transmission 104 through a non-positive coupling, such as a master clutch 106 . This driver will provide a shift control board 108, a manually operated speed control board 110 (throttlepedal) and a brake pedal 12, all of which provide input signals 114 to a microprocessor-based control unit 116, which will process the same Transactions generate command output signals 118 to various system operating mechanisms, such as engine fuel controller 120, clutch operator 122, and transmission shift actuator 124, according to predetermined logic rules.

[0031] The various system actuators preferably include means for providing a feedback input signal 114 to the system controller...

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PUM

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Abstract

A control method / system for controlling the operation of an electric motor (32, 42) actuated shifting mechanism (28) is provided, which includes a procedure for periodically relieving trapped frictional forces in the shifting mechanism and associated linkages (30, 38, 40). At initiation of a shifting operation (60), or periodically (66) during a shifting operation, the level of energization of the electric motor is reduced from the full target energization level thereof (68) to a minimal level (70) for a relatively short period of time (72) and then returned to the target energization level thereof. Preferably, the level of energization is returned in a 2-step process comprising stepping the level of energization to an intermediate level (76) and then ramping the level of energization from the intermediate value to the level of full target energization thereof in a ramped fashion.

Description

technical field [0001] The present invention relates to a control method / system for controlling the operation of an electrically actuated shift mechanism, such as an electrically actuated x-y shift mechanism for an automated mechanical transmission. In particular, the invention relates to the control of electrically actuated shift mechanisms. This is effective to periodically relieve the trapped frictional force in the moving mechanism. Background technique [0002] Automated mechanical transmission systems, employing shift mechanisms controlled by command output signals from a system controller, are well known in the art. This is learned from US Patent Nos. 4,361,060; 4,595,986; 4,648,290; 5,050,427 and 5,053,959, the publications of which are incorporated herein by reference. This fully or partially automated system is based on the use of positive jaw clutches for mechanical transmission. It is synchronous or asynchronous to selectively engage and disengage the selected...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/04F16H61/28F16H61/32F16H61/34F16H63/20
CPCF16H61/32
Inventor A·R·戴维斯L·A·科明尼克D·P·詹内克D·J·罗西
Owner EATON CORP