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Control method and system for shockless shifting of electric drive mechanical transmission without synchronizer

A technology for mechanical transmission and gear shift control, applied in transmission control, mechanical equipment, components with teeth, etc., can solve the problems of high manufacturing and use costs, increased maintenance costs, easy wear and tear of synchronizers, and shorten the power consumption. Interruption time, improved shifting comfort, impact-eliminating impact

Active Publication Date: 2017-12-29
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

However, such a complex structure leads to high system development, manufacturing and use costs, and the synchronizer is easy to wear, further increasing maintenance costs

Method used

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  • Control method and system for shockless shifting of electric drive mechanical transmission without synchronizer
  • Control method and system for shockless shifting of electric drive mechanical transmission without synchronizer
  • Control method and system for shockless shifting of electric drive mechanical transmission without synchronizer

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0037] Such as Figure 1-Figure 2 As shown, a non-synchronized electric drive mechanical transmission shockless shift control system includes: a vehicle controller (12), a system coordination controller (8), a dual-target tracking controller (3), a drive motor controller ( 2), a drive motor (1), a rule-based controller (7), a shift controller (6), a shift mechanism (5) and an electrically driven mechanical transmission (4). Among them, the driving motor (1), the electric-driven mechanical transmission (4) and the shifting mechanism (5) all adopt low-cost and high-reliability mature products. The drive motor (1) adopts the drive motor commonly used in electric vehicles at present; the electric drive...

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Abstract

The invention relates to an impact-free gear shift control method and system for an electrically driven mechanical transmission without a synchronizer. The electrically driven mechanical transmission is provided with no synchronizer; a drive motor and the electrically driven mechanical transmission are directly coupled, and a clutch between the drive motor and the electrically driven mechanical transmission is omitted. An automobile controller determines the target gear and sends a gear shift instruction to a system coordinating controller; the system coordinating controller coordinates the working sequence and working mode of a dual target tracking controller and a rule-based controller, so that the drive motor and the electrically driven mechanical transmission are in coordinated fit to achieve gear shift; and by accurately controlling a motor rotor, a target joint gear ring accurately tracks rotation of a joint sleeve in the joint process, the requirements for zero rotation speed difference and zero rotation corner difference are met, and impact-free gear shift control is achieved. The method and system can eliminate collision between the joint sleeve and the joint gear ring in the joint process, then gear shift impact is restrained, and the power failure duration is shortened.

Description

technical field [0001] The invention belongs to the technical field of gear shift control of pure electric vehicles, extended-range electric vehicles, and parallel and hybrid hybrid vehicles, and in particular relates to a non-impact gear shift control method and system for an electrically driven mechanical transmission without a synchronizer. Background technique [0002] Electric mechanical transmission (EMT) system has comprehensive advantages such as simple structure, low cost, high system efficiency, small size and light weight, etc. It has been paid more and more attention by the industry in recent years, and has been used more and more in pure electric vehicles and hybrid vehicles. Applications. [0003] The electric drive mechanical transmission uses a synchronizer to ensure that the engaging sleeve and the target engaging ring gear cannot be in contact until synchronization is achieved, thereby avoiding inter-tooth impact. However, such a complex structure leads to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/04F16H61/32F16H59/50
CPCF16H59/50F16H61/0437F16H61/32
Inventor 陈红旭田光宇卢紫旺黄勇
Owner TSINGHUA UNIV
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