飞机电源系统建模仿真及实验平台研制
发布时间：2019-01-26 20:44
【摘要】：随着当代新型飞机朝着多电、全电飞机方向快速发展,对飞机电源系统的要求也越来越高,其供电质量及可靠性已经成为影响飞机性能的重要因素,对它的研究也日渐成为航空界的热点。本文通过建模、仿真以及搭建实验平台对飞机电源系统进行研究。首先,文章在对飞机同步发电机工作原理介绍分析的基础上,推导出同步发电机基本方程,利用派克变换,建立同步发电机的数学模型。研究和分析小脑模型神经网络算法以及遗传算法,并利用改进GA对PIDCMAC复合控制器的四个控制参数进行优化,通过仿真实验对优化前后的复合控制器进行性能对比和分析。然后,建立飞机电源系统的仿真模型,并设计三种励磁控制方案,分别为常规PID控制器、PIDCMAC复合控制器以及基于改进GA优化的PIDCMAC复合控制器励磁控制方案。通过对三种励磁控制方案中主发电机励磁电流、输出三相交流电压、输出电压有效值波形、负载突变时系统的响应波形进行详细的对比和分析,从上升时间、超调量、调节时间、稳态误差等性能指标验证基于改进GA优化的PIDCMAC励磁控制方案控制效果更佳。最后,搭建飞机电源实验平台,对平台的总体框架和工作原理进行简单介绍,重点对以DSP为控制核心的电动机调速系统及以STM32为控制核心的发电机励磁控制系统进行详细的硬件和软件设计。开发飞机电源实验平台上位机软件,并说明该软件实现的各项功能及控制界面效果。上述实验平台搭建,为飞机电源系统的理论研究提供硬件验证平台。
[Abstract]:With the rapid development of modern aircraft towards multi-electric and all-electric aircraft, the requirement of aircraft power supply system is becoming more and more high, and its power supply quality and reliability have become an important factor affecting the performance of aircraft. The research on it has become a hot spot in the aviation field. In this paper, the aircraft power supply system is studied by modeling, simulation and setting up experimental platform. Firstly, based on the introduction and analysis of the working principle of the aircraft synchronous generator, the basic equation of the synchronous generator is derived, and the mathematical model of the synchronous generator is established by using the Parker transform. The neural network algorithm of cerebellar model and genetic algorithm are studied and analyzed. The four control parameters of PIDCMAC composite controller are optimized by improved GA. The performance of composite controller before and after optimization is compared and analyzed by simulation experiment. Then, the simulation model of the aircraft power supply system is established, and three excitation control schemes are designed, namely, the conventional PID controller, the PIDCMAC composite controller and the excitation control scheme of the PIDCMAC composite controller based on the improved GA optimization. By comparing and analyzing the excitation current of main generator, output three-phase AC voltage, output voltage RMS waveform and response waveform of the system when the load is abrupt in three excitation control schemes, the rise time and overshoot are analyzed. Adjusting time, steady-state error and other performance indicators verify that the control effect of PIDCMAC excitation control scheme based on improved GA optimization is better. Finally, the experimental platform of aircraft power supply is built, and the general framework and working principle of the platform are briefly introduced. The detailed hardware and software design of the motor speed regulating system with DSP as the control core and the generator excitation control system with STM32 as the control core are emphasized. The upper computer software of aircraft power supply experimental platform is developed, and the functions and control interface effect of the software are described. The above experimental platform provides a hardware verification platform for the theoretical research of aircraft power supply system.
【学位授予单位】：南昌航空大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V242
本文编号：2415892
[Abstract]:With the rapid development of modern aircraft towards multi-electric and all-electric aircraft, the requirement of aircraft power supply system is becoming more and more high, and its power supply quality and reliability have become an important factor affecting the performance of aircraft. The research on it has become a hot spot in the aviation field. In this paper, the aircraft power supply system is studied by modeling, simulation and setting up experimental platform. Firstly, based on the introduction and analysis of the working principle of the aircraft synchronous generator, the basic equation of the synchronous generator is derived, and the mathematical model of the synchronous generator is established by using the Parker transform. The neural network algorithm of cerebellar model and genetic algorithm are studied and analyzed. The four control parameters of PIDCMAC composite controller are optimized by improved GA. The performance of composite controller before and after optimization is compared and analyzed by simulation experiment. Then, the simulation model of the aircraft power supply system is established, and three excitation control schemes are designed, namely, the conventional PID controller, the PIDCMAC composite controller and the excitation control scheme of the PIDCMAC composite controller based on the improved GA optimization. By comparing and analyzing the excitation current of main generator, output three-phase AC voltage, output voltage RMS waveform and response waveform of the system when the load is abrupt in three excitation control schemes, the rise time and overshoot are analyzed. Adjusting time, steady-state error and other performance indicators verify that the control effect of PIDCMAC excitation control scheme based on improved GA optimization is better. Finally, the experimental platform of aircraft power supply is built, and the general framework and working principle of the platform are briefly introduced. The detailed hardware and software design of the motor speed regulating system with DSP as the control core and the generator excitation control system with STM32 as the control core are emphasized. The upper computer software of aircraft power supply experimental platform is developed, and the functions and control interface effect of the software are described. The above experimental platform provides a hardware verification platform for the theoretical research of aircraft power supply system.
【学位授予单位】：南昌航空大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V242
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，本文编号：2415892
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