目标模拟系统及其误差分析与补偿方法研究

发布时间：2018-04-20 07:49

  本文选题：目标模拟系统 + 切换PID　； 参考：《哈尔滨工业大学》2016年硕士论文

【摘要】：系统仿真技术贯穿于航天及国防工业领域设备研发与调试的整个过程。本文设计的目标模拟系统由靶标温控系统和目标运动系统两部分构成,能够对飞行器制导系统识别、跟踪能力进行性能测试与评估。应用目标模拟系统进行制导仿真试验节省经费的同时,能够测试系统在不同环境条件下的性能,然而目标模拟系统的精度直接关系到被测设备的可靠性和结果的准确性。因此本文在总结前人工作基础之上,针对目标模拟系统,改进控制算法的同时,深入分析了误差来源,并对系统的误差进行补偿,从而保证目标模拟系统仿真结果具有更高的准确性。文章首先系统地分析和总结了半实物仿真这一领域的研究现状及成果,指出了现存控制策略的局限性,并分别给出了靶标温控系统和目标运动系统的控制方案设计和控制算法改进,通过搭建MATLAB Simulink程序进行仿真,获得的仿真结果验证了算法的可行性。然后文章分析了目标模拟系统精度的影响因素,采用红外热像仪对靶标表面温度进行校准,通过基于坐标变换的运动机构空间位置误差测量法对目标运动系统进行校准;然后对靶标温控系统和运动控制系统分别给出了基于遗传算法的Wavelet网络温度误差补偿和基于改进BP神经网络的空间位置误差补偿方案;实验结果显示补偿后的系统控制精度得到明显提高。本文最后搭建了目标模拟系统上位机应用软件,论述了上位机应用软件优化设计中的模块化设计思想、高精度定时方法等关键性问题;利用上位机软件和测试软件分别对系统进行温度控制、同步运行、正弦响应和综合运动轨迹的测试,对实验结果进行分析显示,系统各项性能指标均满足技术指标要求。
[Abstract]:The system simulation technology runs through the whole process of equipment development and debugging in the field of aerospace and national defense industry. The target simulation system designed in this paper is composed of target temperature control system and target motion system. It can test and evaluate the performance of aircraft guidance system identification and tracking capability. The application of the target simulation system to the guidance simulation test can save money and at the same time can test the performance of the system under different environmental conditions. However, the accuracy of the target simulation system is directly related to the reliability of the equipment under test and the accuracy of the results. On the basis of summarizing the previous work, this paper improves the control algorithm for the target simulation system, analyzes the error source deeply, and compensates the error of the system. In order to ensure the target simulation system simulation results have a higher accuracy. Firstly, this paper systematically analyzes and summarizes the research status and achievements in the field of hardware-in-the-loop simulation, and points out the limitations of existing control strategies. The control scheme design and control algorithm improvement of target temperature control system and target motion system are given respectively. The simulation results obtained by MATLAB Simulink program verify the feasibility of the algorithm. Then the paper analyzes the factors that affect the precision of the target simulation system, uses infrared thermal imager to calibrate the surface temperature of the target, and calibrates the target moving system by measuring the spatial position error of the moving mechanism based on coordinate transformation. Then the temperature control system of target and the motion control system are given respectively based on genetic algorithm Wavelet network temperature error compensation and improved BP neural network space position error compensation scheme. The experimental results show that the control accuracy of the compensated system is improved obviously. At the end of this paper, the application software of the upper computer in the target simulation system is built, and the key problems such as the modular design idea and the high precision timing method in the optimization design of the upper computer application software are discussed. The temperature control, synchronous operation, sinusoidal response and synthetic motion track are tested by the upper computer software and the test software respectively. The experimental results show that the performance of the system meets the requirements of the technical indicators.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V448;V411.8
，

本文编号：1776890