Research Of Three-Axis Turntable's Control System Based On RTX

With the development of the aerospace and aviation industry, the precision of inertia component must be improved. As one of the most important devices to test inertia components, the performance of three-axis turntable directly relates to the reliability and confidence level of simulation and test. Consequently, its performance index is being demanded increasingly. Further, the research on the control system of three-axis turntable is important to the development of aerospace and aviation industry and national defense.According to the specific requirements of the turntable system, this research mainly focuses on the design of three-axis turntable controller and the development of real-time control software. The research of the turntable control system based on RTX is achieved. Following are the main works and the result of the thesis:Firstly, according to the analysis of the turntable control system's functions and principle, the overall structure of the turntable system is worked out. In terms of hardware, platform-driven system is established by the data acquisition card, D/A conversion card and industrial control system; In terms of software, the system software's architecture and framework model are determined. "Windows + RTX" to the software platform of the control system is used.Secondly, on the basis of dynamic process, differential equations of three-axis turntable are derived by theoretical analysis. These are the base of designing and testing three-axis control system. For the coupling and non-linear characteristics of the three-axis turntable system in the operation process, the inverse system method is used to decouple the system model and the system controller is designed by BP neural network PID.Finally, according to the requirements of the turntable control system, by analyzing the structure of the software system modules and work flow, the specific structure of the software system is constructed. Using " Windows + RTX" integrated software platform, the real-time software for the control system is exploited. It fulfils the requirements of real-time for the control system, and solves the problem that the real-time software is difficult to run under the Windows operation system.