海底沉积物声学测试装置的自动加压系统设计和研究

发布时间：2018-04-01 10:12

本文选题：海底沉积物　切入点：自动加压　出处：《广东工业大学》2015年硕士论文

【摘要】：随着海洋资源的不断开发利用,国防军事对海洋利用的不断加深,海底沉积物声学特性研究已经成为当前一门重要的课题之一。海底沉积物声学特性研究主要以实验室测量法为主,实验室测量法具有操作简便,成本低,可以重复获得大量实验数据等优点。但是,由于在实验室对海底沉积物进行声学特性研究,海底沉积物脱离海底环境,研究表明,海底沉积物在不同的温度和压力环境下会表现出不同的声学特性,因此,实验室测量法存在一定的误差。海底沉积物声学特性测试装置的自动加压控制系统模拟了海底的压力环境,对海底沉积物声学特性研究具有十分重要的意义。自动加压控制系统是海底沉积物声学特性测试装置的重要组成部分,它可以模拟海洋深度3000米内的压力环境。在上位机vb控制软件上输入目标压力等参数后点击自动加压按钮,自动加压控制系统可以实现自动加压、保压等功能,压力控制精度达到0.1MpPa,在保压过程中稳态误差小于2%。自动加压控制系统可以大大减轻了实验人员的体力劳动,为专心做实验研究提供了保证和方便。本文主要内容有：1、分析海底沉积物声学测量实验对海底压力模拟的要求,提出自动加压控制系统的技术指标和总体设计方案；2、分析自动加压控制系统的结构组成,建立了自动加压控制系统的数学模型,并基于simulink软件进行模型仿真分析；3、设计了自动加压控制系统的硬件与软件；4、对自动加压控制系统进行调试。本课题主要是利用三相永磁交流伺服电机作为动力元件,在上位机vb控制软件的控制下,实现压力舱的压力自动控制。三相永磁交流伺服电机是现代工业自动化的一个重要执行装置,把三相永磁交流伺服电机应用在实验设备上,在控制单元的控制下实现压力自动控制,让实验设备操作更加智能化,人性化。
[Abstract]:With the continuous development and utilization of marine resources, the defense and military use of the ocean has deepened. The study of acoustic characteristics of seabed sediments has become one of the most important subjects. The study of acoustic characteristics of seabed sediments is mainly based on laboratory measurement, which is simple to operate and low in cost. It is possible to obtain a large amount of experimental data repeatedly. However, since the acoustic properties of seabed sediments are studied in the laboratory, the seabed sediments are isolated from the seabed environment. Seafloor sediments exhibit different acoustic properties at different temperatures and pressures. There is a certain error in the laboratory measurement method. The pressure environment of the seabed is simulated by the automatic pressure control system of the underwater sediment acoustics test device. It is of great significance to study the acoustic characteristics of seafloor sediments. The automatic pressure control system is an important part of the testing device for the acoustic characteristics of seabed sediments. It can simulate the pressure environment within 3000 meters of ocean depth. The automatic pressurization control system can realize the functions of automatic pressurization and keeping pressure, after entering the parameters such as target pressure on the upper computer vb control software and clicking on the automatic pressurization button. The accuracy of pressure control is 0.1 MPA, and the steady-state error is less than 2 in the process of keeping pressure. The automatic pressure control system can greatly reduce the manual labor of the experimenter. It provides a guarantee and convenience for the experimental research. The main contents of this paper are as follows: 1, analyzing the requirements of seabed pressure simulation for the acoustic measurement experiment of submarine sediment. The technical index and the overall design scheme of the automatic pressurization control system are put forward. The structure of the automatic pressurizing control system is analyzed, and the mathematical model of the automatic pressurization control system is established. Based on the model simulation analysis of simulink software, the hardware and software of the automatic pressurization control system are designed to debug the automatic pressurization control system. This paper mainly uses the three-phase permanent magnet AC servo motor as the power element. Under the control of vb control software of upper computer, the pressure chamber can be controlled automatically. Three-phase permanent magnet AC servo motor is an important executive device of modern industrial automation, and the three-phase permanent magnet AC servo motor is applied to the experimental equipment. Under the control of the control unit, the automatic control of the pressure is realized, which makes the operation of the experimental equipment more intelligent and humanized.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P733.2;P736.21

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