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Research and Development of the Electronic Throttle Control System Based on Fuzzy-PID

Author: YangZhenDong
Tutor: YuQunMing
School: Hunan University
Course: Mechanical and Electronic Engineering
Keywords: Electronic throttle Nonlinear Fuzzy-PID control strategy Simulation Test
CLC: U464.134.4
Type: Master's thesis
Year: 2008
Downloads: 632
Quote: 11
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Abstract


Electronic throttle product since its introduction in the 1980s, has been gradually applied to a variety of limousine. Relative to traditional mechanical throttle, Electronic Throttle System (ETCS) according to the intent of driving of the driver and the vehicle driving conditions to determine the best opening of the throttle valve, to ensure that the vehicle has the best power and fuel economy and be able to drive non-slip control (ASR) and cruise control (CCS) for idle control (IDL), the realization of the electronic control functions lay the foundation to improve safety and ride comfort. Meanwhile, for the hybrid vehicle, in order to achieve the management and allocation of energy, electronic throttle also become inevitable choice. In this paper, the electronic throttle system research and development, laying the foundation for the electronic throttle on the hybrid car. This article analyzes the working principle of the electronic throttle system, exist in the basic structure and the mechanical structure of the nonlinear factors and their respective characteristics, such as the return spring, the impact of the air flow, the Coulomb stick-slip friction, etc.. Determination of the critical parameters of the electronic throttle, a mathematical model of the electronic throttle system. In order to adapt to the electronic throttle control system rapid dynamics suppression due to the electronic throttle body nonlinear control characteristics, a new fuzzy PID control strategy to improve the electronic throttle system controlled by the fuzzy Dynamic performance, intelligent integral PID control to ensure the steady-state performance of the system, with weight factor function to improve the control of the switching process. Simulation model of the electronic throttle control system in MATLAB / Simulink environment. Electronic throttle controller using the Freescale MC9S12DG128 microcontroller as the master chip hardware system includes a controller power supply module, pulse width modulation of the DC motor driver module, serial communication module and CAN bus communication module . CodeWarrior compiler software, complete control functions and debugging features. The real-time display of system status and fault alarm and data acquisition, as well as in the control process, this paper developed a serial port communication system based on LabWindows / CVI. The simulation and test results show that: the fuzzy PID control phase for PID control and the intelligent integral PID control can precisely control the throttle opening, decreasing the overshoot transient error is small, the lag time is shorter. The developed fuzzy PID hybrid controller is able to complete the electronic throttle control the functional requirements of the system.

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive engine > Reciprocating engine > Components, parts > Valve > Intake and exhaust systems
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