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Adaptive fuzzy technology based electronic throttle control method and system as well as vehicle

An electronic throttle, self-adaptive fuzzy technology, applied in electrical control, engine control, fuel injection control and other directions, can solve the problems of unable to achieve optimal control effect, adjustable parameters cannot be adjusted in real time, etc., to achieve fast response speed, control high precision effect

Inactive Publication Date: 2020-04-24
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many scholars have proposed various adaptive control algorithms for the electronic throttle, there are still shortcomings in the existing adaptive control methods of the electronic throttle: the adjustable parameters in the traditional adaptive control system cannot be real-time during the operation of the system. adjustment, the optimal control effect cannot be achieved

Method used

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  • Adaptive fuzzy technology based electronic throttle control method and system as well as vehicle
  • Adaptive fuzzy technology based electronic throttle control method and system as well as vehicle
  • Adaptive fuzzy technology based electronic throttle control method and system as well as vehicle

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Experimental program
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Effect test

Embodiment 1

[0050] Such as Figure 1-2 As shown, Embodiment 1 of the present disclosure provides an electronic throttle control method based on adaptive fuzzy technology, and the specific steps are as follows:

[0051] Step 1: Establishment of the mathematical model of the electronic throttle system.

[0052] Select state vector Establish the state space expression of the electronic throttle system:

[0053]

[0054] y=x 1

[0055] where J=n 2 J m +Jg and B=n 2 B m +B t are the equivalent total inertia and damping constant, respectively, θ is the rotation angle of the throttle valve plate, k sp is the elastic coefficient of the return spring, n is the ideal transmission ratio of the reduction gear, R a is the internal resistance of the driving motor, u is the input voltage of the driving motor, J m is the moment of inertia of the driving motor, J g is the moment of inertia of the throttle flapper shaft, B m is the damping coefficient of the driving motor, B t is the da...

Embodiment 2

[0100] Embodiment 2 of the present disclosure provides an electronic throttle control system based on adaptive fuzzy technology.

[0101] An electronic throttle control system based on adaptive fuzzy technology, including:

[0102] The model building module is configured to: construct a mathematical model of the electronic throttle system, and obtain a state space expression of the electronic throttle system;

[0103] An adaptive controller building block configured to: construct a first error variable and a second error variable, adopt an adaptive algorithm to design an adaptive controller for an electronic throttle system, and obtain a control law for an optimal control voltage of the adaptive controller ;

[0104] The tracking error system building block is configured to: build a tracking error system, process the first error variable and the second error variable to obtain the state space expression of the electronic throttle tracking error system, and obtain the first co...

Embodiment 3

[0108] Embodiment 3 of the present disclosure provides an electronic device, including the electronic throttle control system based on adaptive fuzzy technology described in Embodiment 2 of the present disclosure.

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Abstract

The invention provides an adaptive fuzzy technology based electronic throttle control method and system as well as a vehicle. The adaptive fuzzy technology based electronic throttle control method comprises the following steps that a mathematical model of an electronic throttle system is constructed, and an adaptive controller of the electronic throttle system is designed by adopting an adaptive algorithm; a tracking error system is constructed, a tracking error of the system and the derivative of the tracking error are used as input variables of the fuzzy controller, and a fuzzy control algorithm is adopted to select an appropriate first control parameter and an appropriate second control parameter; and the adaptive controller calculates the optimal control voltage of an electronic throttle according to a first control parameter and a second control parameter output by the fuzzy controller, and then the ideal output angle of the electronic throttle is output. According to the adaptivefuzzy technology based electronic throttle control method and system as well as the vehicle, the parameters of the adaptive controller can be adjusting in real time in the operation process of the system, so that the influence of the uncertainty of the parameters of the electronic throttle and the nonlinear characteristic of the throttle control system on the electronic throttle control is reduced, and the characteristics that the control precision is high, and the response speed is high are achieved.

Description

technical field [0001] The present disclosure relates to the technical field of electronic throttle control, in particular to an electronic throttle control method, system and vehicle based on adaptive fuzzy technology. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] The electronic throttle is a controllable valve that controls air entering the engine. It is composed of a DC motor, a position sensor, a return spring, a valve plate, etc. After the air enters the intake pipe, it will mix with gasoline to form a combustible mixture, thereby burning and doing work. Therefore, the performance of the electronic throttle determines the response of the engine torque and the accuracy of the fuel / air (F / A) ratio. The control effect of the electronic throttle directly affects the power, economy and emission of the engine, so the stability and accu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02D41/14F02D11/10
CPCF02D11/10F02D41/0002F02D41/1402F02D41/1404F02D2041/1433
Inventor 孙波刘一鸣陈晶张承慧
Owner SHANDONG UNIV
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