基于雷达测距的火车精确对接控制研究
发布时间：2019-03-13 13:33
【摘要】：基于FMCW毫米波雷达测距的火车速度控制是载货火车精确对接的解决方案之一。本论文采用FPGA+DSP的结构设计雷达测距系统,结合用直流电机转速控制模拟火车速度控制,研究基于雷达测距的火车对接精确控制方法,设计了基于雷达测距的火车精确对接控制系统。本文研制的系统分为测距系统和速度控制系统两个部分。测距系统主要包括了三个内容：1)完成了测距系统方案设计及可行性论证；2)完成了调制信号电路、中频信号滤波放大电路和信号处理电路等模块的设计；3)分析了FFT和ZOOM-FFT算法在雷达信号处理方面的应用,提出了将ZOOM-FFT算法应用于火车对接测距系统,提高了系统测量精度及处理速度。速度控制系统主要包括三个内容：1)完成了速度控制系统方案设计及可行性论证；2)完成了正反转功率驱动电路的设计;3)设计了PWM波实现了直流电机转速的自动控制,模拟火车对接的速度控制过程。对系统在实验室和现场进行测试,实验室环境下,系统在0.5-10m内绝对误差小于0.2m,在10-50m内的绝对误差小于0.5m;在长沙机务段现场测试条件下,系统在0.5-50m范围内最大误差0.64m。用电机转速控制模拟火车速度对速度控制系统进行测试：电机速度初始化值为v0,当目标距离在15-50m范围时,电机速度为1.5v0；在5-15m范围时,电机速度为v。；在1-5m时,电机速度为0.5 v。；当距离在lm以内时,电机停止运转,通过惯性实现模拟对接过程。
[Abstract]:Train speed control based on FMCW millimeter wave radar ranging is one of the solutions for accurate docking of cargo trains. In this paper, the radar ranging system is designed by using the structure of FPGA DSP, and the train speed control is simulated by DC motor speed control, and the precise control method of train docking based on radar ranging is studied. A train precise docking control system based on radar ranging is designed. The system developed in this paper is divided into two parts: ranging system and speed control system. The ranging system mainly includes three parts: 1) complete the scheme design and feasibility demonstration of the ranging system; 2) complete the modulating signal circuit, if signal filtering and amplifying circuit and signal processing circuit and so on; 2) complete the design of modulating signal circuit, if signal filtering and amplifying circuit and signal processing circuit, etc. 3) the application of FFT and ZOOM-FFT algorithm in radar signal processing is analyzed, and the application of ZOOM-FFT algorithm in train docking ranging system is put forward, which improves the measurement precision and processing speed of the system. The speed control system mainly includes three contents: 1) the scheme design and feasibility demonstration of the speed control system are completed; 2) the design of positive and reverse power drive circuit is completed; 3) PWM wave is designed to realize the automatic speed control of DC motor, which simulates the speed control process of train docking. The system is tested in laboratory and field. In laboratory environment, the absolute error of the system is less than 0.2 m within 0.5 m and less than 0.5 m within 10 m. Under the condition of on-site test of Changsha locomotive depot, the maximum error of the system is 0.64m in the range of 0.5m / 50m. The motor speed control simulation train speed control system is used to test the speed control system: the initial value of motor speed is v _ 0, when the target distance is in the range of 15 ~ 50 m, the motor speed is 1.5 v _ 0, and in the range of 5 ~ 15 m, the motor speed is v. The motor speed is 0.5v. When the distance is within lm, the motor stops running and simulates the docking process by inertia.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U284.66;TN953.2
本文编号：2439428
[Abstract]:Train speed control based on FMCW millimeter wave radar ranging is one of the solutions for accurate docking of cargo trains. In this paper, the radar ranging system is designed by using the structure of FPGA DSP, and the train speed control is simulated by DC motor speed control, and the precise control method of train docking based on radar ranging is studied. A train precise docking control system based on radar ranging is designed. The system developed in this paper is divided into two parts: ranging system and speed control system. The ranging system mainly includes three parts: 1) complete the scheme design and feasibility demonstration of the ranging system; 2) complete the modulating signal circuit, if signal filtering and amplifying circuit and signal processing circuit and so on; 2) complete the design of modulating signal circuit, if signal filtering and amplifying circuit and signal processing circuit, etc. 3) the application of FFT and ZOOM-FFT algorithm in radar signal processing is analyzed, and the application of ZOOM-FFT algorithm in train docking ranging system is put forward, which improves the measurement precision and processing speed of the system. The speed control system mainly includes three contents: 1) the scheme design and feasibility demonstration of the speed control system are completed; 2) the design of positive and reverse power drive circuit is completed; 3) PWM wave is designed to realize the automatic speed control of DC motor, which simulates the speed control process of train docking. The system is tested in laboratory and field. In laboratory environment, the absolute error of the system is less than 0.2 m within 0.5 m and less than 0.5 m within 10 m. Under the condition of on-site test of Changsha locomotive depot, the maximum error of the system is 0.64m in the range of 0.5m / 50m. The motor speed control simulation train speed control system is used to test the speed control system: the initial value of motor speed is v _ 0, when the target distance is in the range of 15 ~ 50 m, the motor speed is 1.5 v _ 0, and in the range of 5 ~ 15 m, the motor speed is v. The motor speed is 0.5v. When the distance is within lm, the motor stops running and simulates the docking process by inertia.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U284.66;TN953.2
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相关期刊论文 前2条
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