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Shift schedule control method, device and vehicle based on fuzzy logic

A technology of fuzzy logic and shifting rules, applied in transmission control, components with teeth, belts/chains/gears, etc. Control strategy is rough and other problems to achieve the effect of improving power economy

Active Publication Date: 2020-09-29
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, gear shifting is only controlled according to vehicle speed and engine load, without considering the specific conditions of the vehicle. The control strategy for gear shifting is relatively rough. In the case of complex parameters such as status, it cannot meet the user's needs for gear shifting, and the driving experience is poor.

Method used

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  • Shift schedule control method, device and vehicle based on fuzzy logic
  • Shift schedule control method, device and vehicle based on fuzzy logic
  • Shift schedule control method, device and vehicle based on fuzzy logic

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Embodiment Construction

[0029] As mentioned in the background technology, the existing technology only controls gear shifting according to vehicle speed and engine load, without considering the specific conditions of the vehicle. In the case of complex parameters such as the charging state of the power vehicle, it cannot meet the user's needs for gear shifting, and the driving experience is poor.

[0030] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] figure 1 It is a flowchart of a fuzzy logic-based shift schedule control method according to an embodiment of the present invention. Combine below figure 1 The specific steps of the shift schedule control method based on fuzzy logic are explained in detail.

[0032] Step S101: According to multiple state parameters of the vehicle, use fuzzy logic to obtain a ...

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Abstract

The invention discloses a gear shift rule control method and device based on fuzzy logic, and a vehicle. The gear shift rule control method comprises the steps that based on a plurality of state parameters of the vehicle, a calculation result of at least one gear shift parameter is obtained by using the fuzzy logic; and according to the calculation result of at least one shift parameter and a preset entry condition, a corresponding shift mode is entered. According to the technical scheme, the flexibility and the fineness of the gear shift rule control of a gearbox are improved.

Description

technical field [0001] The invention relates to the technical field of intelligent control, in particular to a fuzzy logic-based shift schedule control method, device and vehicle. Background technique [0002] The shift schedule of the gearbox refers to the control of the shift timing of the gearbox. Early gearboxes only used vehicle speed to control the timing of upshifts and downshifts, that is, single-parameter control. [0003] What is commonly used in the prior art is to use vehicle speed and engine load (throttle valve opening) to control gear shifting, that is, two-parameter control. At the same time, according to some characteristic output curves of the current engine, the speed range with low fuel consumption rate is fully utilized to achieve fuel economy; when sufficient power output is required, the gearbox will use the high-output speed range as much as possible. In automatic transmission and hybrid transmission shift schedule control, the shift schedule is gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/00F16H59/50F16H59/60F16H59/24F16H59/48F16H59/54
CPCF16H59/24F16H59/48F16H59/50F16H59/54F16H59/60F16H61/00F16H2059/605F16H2061/005F16H2061/0081
Inventor 孙俊顾铮珉杨亚娟王伦珍
Owner SAIC MOTOR
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