Speed Research Of Electronical Control Diesel Engine With The Variable Structure Theory

Sliding Variable Control has been widely intruduced in industrial fields and get good results,because it takes strong robustness without parameters affected and anti-jamming features.The electronical control diesel engine is a typical multi-disturbance dynamic and nonlinear system of delay.In order to make the electronic control diesel engine to gain excellent speed stability and adapt to different working environment, this article introduces a variety of sliding variable structure control algorithm to control the speed of the electronic control diesel engine.Firstly, this article analyzes advantages and disadvantages of governor process with a rack that is controlled with sliding mode variable structure algorithm from mechanical diesel engine. And it establishes a mathematical model of the electromagnetic actuator with the dynamic characteristics of the various parameters of the electromagnetic actuator impact. It analyzes the electronic control diesel engine speed control under the conditions of different requirements with different applications. Meanwhile, in order to design and debug electronic control diesel engine control algorithms, the article adopted an electronical control diesel engine research objects and a large number of trials, mean modeling approach to establish a mathematical model of the high-pressure common-rail diesel engine.Secondly, the article designs speed control the amount of speed control model through large amounts of data fitting method to obtain fuel amount of control. After elaborating sliding mode variable structure control theory, it designs a general nonlinear variable structure controller for electronical control diesel engines machine applications, such as automotive, generating sets and construction machinery diesel engine load.design different sliding mode variable structure control diesel engine algorithms with different load characteristics of the. Sliding Mode Control buffeting causes and consequences, also analyzed Terminal sliding mode variable structure control which is senior sliding mode control algorithm design electronic control diesel engine controller, weakened in order to achieve the purpose of the buffeting and optimize the speed control.In order to control the accuracy of electronical control diesel engine speed for real-time optimization and adjustment, the article builds electronical control diesel engine simulation platform with the loop, and it gains the actual requirements of diesel engines through validation with calculus and dynamic speed response.The article builds experimental platform of fuel amount to control the amount of speed that optimizes various control algorithms. With optimization of algorithm parameters of electronic control diesel engine speed control to adjust the accuracy of the implementing agencies the article verifys the feasibility and adaptability of the control algorithm.In this article, sliding mode variable structure and Teminal control algorithm is studied and it designs electronical control diesel engine speed controller. and takes simulation experiments in offline and online with sliding mode variable structure control algorithm as to meet stability of the control requirements under different conditions.Finally, the sliding variable controller with electronical control diesel engine speed control effect are made to comparison with PID controller. Sliding variable and Terminal sliding variable has strong robust and anti-interference ability, stable speed control error is smaller. Especially the Terminal sliding mode variable structure control algorithm has good tracking performance. PID controller has simple structure and high reliability, can meet the requirements of diesel electronic speed control.