⑴ the direction of integration and integrated control. Integration and integrated control is not only the development direction of electronic throttle control system, but also the development direction of automobile electronic control system in the future. It helps simplify electronic throttle control systems, reduce manufacturing costs, and enhance the exchange of information between systems.
At present, ETC has been developed to the direction of integration and centralized control, such as idling control, cruise control, reduction of shift impact control, throttle return control and vehicle stability control and other functions integration, or the braking anti-lock control system, traction control system and drive anti-skid control system combined for braking control.
⑵ combined with a variety of control methods for comprehensive control. By combining various control strategies, the control precision and reaction speed of ETC can be improved. The current development direction is from linear control to nonlinear control, from single mode control to multi-mode control and from traditional PID control to the use of PID and modern control theory combined control. Because the traditional PID control is troubled by the complicated parameter setting method, the parameters are often poor, the performance is poor, and the adaptability to the operating conditions is very poor. Therefore, the methods of multi-mode control, neural network control and sliding mode variable structure control are introduced into electronic throttle control. Sliding mode variable structure control has good robustness and strong nonlinearity, which is independent of the parameters and disturbance of the system, and also reflects the development direction of electronic throttle control mode in the future. The combination of neural network control method and PID control can improve the adaptive ability of electronic throttle control system.
However, these theories have yet to be perfected and further developed, so it is necessary to study them more deeply in order to apply these comprehensive control strategies to the electronic throttle control system.
The application of ⑶ Vehicle Network and bus technology in automobile electronic throttle control system. With the more and more applications of ETC and other electronic control systems in automobiles, a sharp increase in various sensors and electronically controlled units has resulted in complex vehicle control circuits and an increase in the number of conductors on vehicles. In addition, the information resources of each system should be able to be shared. All these put forward higher requirements for the integrated wiring and information sharing of automobiles.
Currently widely used in the international arena. The On-board network technology is the CAN Bus controller LAN, which can meet the needs of electronic data transmission and reliability, data sharing and system integration on the automobile, and greatly reduces the complexity of wiring, and improves the operation reliability of automobile electronic system.
Therefore, the application of CAN bus technology in automobile electronic throttle control system will also be an important trend.