Design And Development Of The Turntable Servo System Based On VxWorks

This paper discusses the process of designing and developing the turntable servo control system of a tracking radar, and a number of important issues encountered in the process of designing the servo system are also dicussed here.Firstly, the overall design of the system based on various performance indicators is made in this paper, and suitable motors and drives are selected on the ground of estimating the system load. For the elimination of the impact of backlash on turntable accuracy, the anti-backlash servo system driven by double-motor is adopted in this project, and the reinforcement computer is selected as the core of calculating and control. As the servo control system has high requirements on the performance of real-time and stability, the VxWorks embedded real-time operating system is adopted as the software platform of this system.Secondly, this paper describes the basic characteristics of VxWorks RTOS, and the method for cross-compiling and cross-debugging of control software in the Tornado integrated development environment. It mainly introduces the rational division of tasks and selection of synchronization and communication mechanism between tasks, and some problems which should pay attention to in the programming process are also dicussed, such as the use of critical resources, program testing, etc.Finally, it briefly describes the implementation of the compound control strategy in the servo system. Meanwhile, this paper studies ways of the appliation of Kalman filter algorithm andα-βfilter algorithm to the actual system, and makes simulation and performance comparison in Matlab between the two kinds of algorithms mentioned above based on the actual system. The further optimization of control software and deeper studing of filter algorithm is the next work of this subject.