Research On The Plane Steering Controller

With the era of progress and development of science and technology, aviation technology has become more sophisticated, more complex aviation equipment. The requirements of Aircraft control system control and reliability have been improved gradually. Servo is a key component of the aircraft control system, which controls performance directly affects the performance of the aircraft control system. Modern aircraft control systems generally use a hydraulic servo steering gear, because of its fast response, high-capacity, high precision control. In this paper, I designed a hydraulic steering servo system controller based on STM32.Firstly, the electro-hydraulic steering servo system conducted in-depth research. Analysis overall structure of the electro-hydraulic steering servo system, the system consists of three parts small steering parts, integrated rocker, hydraulic actuator portion and the like. Through detailed study of each part, the mathematical model of the hydraulic steering servo system. Hydraulic servo steering system was simulink simulation, analysis of dynamic response of hydraulic steering servo system. This paper analysis the effects of various parameters of the system for the system response and complete the simulation at the same time.Then, this paper focuses on the control algorithms of hydraulic steering servo system. In response to this Hysteresis characteristics of aircraft hydraulic steering servo system, this paper using CMAC feed forward control and have finished the simulation. Then using CMAC-PID parallel algorithm to improved, and analyze the advantages and disadvantages of the algorithm. In order to achieve the control effect, based on CMAC-PID algorithm, this paper designed a CA-CMAC and fuzzy PID control algorithm and designed a CA-CMAC and fuzzy PID compound controller, and finished the corresponding simulation analysis. Simulation results show that: the control method combines the advantages of CA-CMAC and fuzzy PID, and can better control the hydraulic steering servo system.Secondly, this paper choose STM32 hydraulic steering servo system as the master controller chip and designed A/D module, D/A modules, and communication modules of the controller, completed the hardware design of the system controller. Meanwhile, the paper also wrote PC control software of hydraulic steering servo system and completed the lower computer programming.Finally, this paper analyzed the real-time of the controller and completed the appropriate testing. The results showed that in the real-time control, the response time of the controller is about 20 us, it is enough to system requirements. Summarizes the main conclusions of this paper and related research, analyzes the shortcomings of this paper, and future research are discussed.