单片机变转速液压测控系统

发布时间：2018-03-13 11:19

本文选题：变转速液压技术　切入点：测控系统　出处：《安徽理工大学》2011年硕士论文　论文类型：学位论文

【摘要】：变转速液压技术作为一种新型的节能传动方式,有显著的节能效果,它能够降低整个液压系统的能量损失,可以提高整个系统的工作效率,在液压系统中应用十分广泛。同传统的泵控系统相比,具有噪声低、调速范围宽等优势,但变转速液压调速系统也存在着动态响应慢、低速特性差、速度刚性差等问题。为了使这种节能传动技术得到更好的发展和应用,论文中设计一套以单片机作为主控制器的测控系统,在变转速泵控马达调速系统的实验中用于液压信号的采集和控制信号的输出。论文中通过对变转速液压系统组成结构与工作原理的分析,弄清了液压系统中各传感器的输出信号类型与变频器、方向阀、溢流阀的控制信号类型,从而确定了信号调理电路和测控系统的总体结构和功能。论文详细阐述了测控系统硬件部分的设计,包括电源模块、复位电路、振荡电路、存储模块、数据采集电路、键盘和液晶显示电路、D/A输出模块以及USB通信模块,同时设计了信号调理电路板对测控系统的输入输出信号进行放大、隔离、滤波等处理。利用Protel 99 SE设计了信号调理电路和测控系统的原理图和PCB图,并加工电路板焊接了电子元器件,制作出了硬件实物。应用KeilC对系统软件程序进行开发设计,包括系统主程序、多通道数据采集程序、LCD液晶屏显示及键盘程序、D/A输出控制程序等。采用Keil uVision和伟福仿真器对各子程序进行了联机调试,由现场调试数据采集和液晶显示等程序的实现,说明硬件和软件设计良好,可以采集和显示变转速液压系统的动态参数。通过对设计出的硬件和软件的调试,得出论文设计的单片机变转速液压测控系统具有同时显示多个液压参数的功能,可以对多路液压信号进行实时的采集,且体积小、应用方便、性价比高、可扩展性强,能够给同类测控系统的设计与应用提供一定的借鉴。
[Abstract]:As a new type of energy-saving transmission technology, variable speed hydraulic technology has remarkable energy-saving effect. It can reduce the energy loss of the whole hydraulic system and improve the working efficiency of the whole system. Compared with the traditional pump control system, it has the advantages of low noise and wide speed range, but the variable speed hydraulic speed control system also has slow dynamic response and poor low speed characteristic. In order to improve the development and application of this energy-saving transmission technology, a set of measurement and control system with single chip microcomputer as the main controller is designed in this paper. In the experiment of variable speed pump controlled motor speed regulation system, it is used to collect hydraulic signal and output control signal. By analyzing the structure and working principle of the hydraulic system with variable rotational speed, the output signal types of the sensors and the control signal types of frequency converter, directional valve and relief valve in the hydraulic system are clarified. The hardware design of the measurement and control system, including power supply module, reset circuit, oscillation circuit, storage module and data acquisition circuit, is described in detail. The keyboard and LCD circuits have DPA output module and USB communication module. At the same time, the signal conditioning circuit board is designed to amplify and isolate the input and output signals of the measurement and control system. Using Protel 99SE, the schematic diagram and PCB diagram of signal conditioning circuit and measurement and control system are designed, and the electronic components are welded on the circuit board, and the hardware object is made. The software program of the system is developed and designed by KeilC. It includes system main program, multi-channel data acquisition program, LCD LCD LCD display program and keyboard program D / A output control program, etc. The subprograms are debugged on-line by using Keil uVision and Defoe Simulator. The realization of data acquisition and liquid crystal display shows that the hardware and software are well designed and the dynamic parameters of the hydraulic system with variable rotational speed can be collected and displayed. By debugging the designed hardware and software, it is concluded that the single chip microcomputer hydraulic measurement and control system with variable rotational speed has the function of displaying multiple hydraulic parameters at the same time, and can collect the multi-channel hydraulic signals in real time, and the volume is small. It has the advantages of convenient application, high performance to price ratio and strong expansibility. It can provide some reference for the design and application of the similar measurement and control system.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH137

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