基于模糊控制的泵类负载节能调速系统研究
发布时间：2018-10-24 21:14
【摘要】：关系到国家安全人民生活的能源是国计民生的重点,能源是紧急的命脉和持续发展的动力。中国总的能源利用效率仅为10%左右,这仅是发达国家的50%,在存储和生产中损耗过程的能量是转换剩余量的90%,到达终端设备,只占了10%,能源利用效率非常低下。近年来频频出现的“电荒",不仅耽误企业正常生产,也造成我国每年浪费占GDP5%的资源,由此造成的损失占我国GDP的10%。对上述两类进行统计,每年损失的能源在两万亿人民币,这是相当触目惊心的。因此,对于节能的研究是非常有意义的,带来的经济收益是非常巨大的。对于企业,能源的浪费间接造成了能源成本的上升,导致效率低下,因此企业越来越多的关注其设备的节能性,并把节能视作高盈利能力的关键。根据统计,65%的工业能耗来自于电机,因此电机研究电机的节能,毫无疑问成为解决问题的关键。本文首先对普通恒定供水系统中水泵能耗原理及电机损耗进行分析了研究,从理论上分析了水泵类负载的负载特性,通过水泵流量、扬程、功率与水泵电机转速的关系得出泵类负载的节能方法;其次分析了当前主流的恒压供水系统的控制方法;最后,在此基础上提出使用模糊PID控制方案,得到高效实用的控制策略和算法,以提高电机的节能性能、提高供水管网压力控制的稳态精度,该控制器能自动适应用户用水量的变化。同时,本文使用MATLAB软件建立了供水系统的控制模型,并进行仿真研究。并与经典的PID控制器和模糊PID控制器相比较,我们可以看到选用模糊PID控制器仿真得到的控制系统各项动态指标以及系统的抗干扰能够完全符合系统的设计要求,并且优于经典的PID控制器。在论文的第五章,介绍了变频恒压供水节能系统的硬件和软件系统设计原理和方法,第五章最后,将模糊PID控制器在实际的硬件平台上运行,测试。可以看到,模糊PID控制器不仅能够满足理论设计要求,而且具有实际的可行性。
[Abstract]:The energy which relates to the national security people's life is the key of national economy and people's livelihood, and energy is the urgent lifeline and the motive force of sustainable development. The total energy utilization efficiency of China is only about 10%, which is only 50% of that of developed countries. The energy lost in the process of storage and production is 90% of the remaining amount, and only 10% of the terminal equipment is reached. The efficiency of energy utilization is very low. In recent years, the frequent "electricity shortage" has not only delayed the normal production of enterprises, but also caused the waste of GDP5% resources every year in our country, resulting in losses of 10% of GDP in our country. For the above two categories of statistics, the annual energy loss of 2 trillion yuan, this is quite shocking. Therefore, the energy-saving research is very meaningful, the economic benefits are very huge. For enterprises, energy waste indirectly causes the increase of energy cost and leads to inefficiency. Therefore, enterprises pay more and more attention to the energy saving of their equipment, and regard energy conservation as the key to high profitability. According to statistics, 65% of industrial energy consumption comes from motor, so the research of motor energy saving is undoubtedly the key to solve the problem. In this paper, the principle of pump energy consumption and motor loss in general constant water supply system are analyzed, and the load characteristics of pump load are theoretically analyzed. The relationship between the power and the speed of the pump motor leads to the energy saving method of the pump type load. Secondly, the control method of the current mainstream constant pressure water supply system is analyzed. Finally, a fuzzy PID control scheme is proposed on the basis of the analysis of the relationship between the power and the rotational speed of the pump motor. An efficient and practical control strategy and algorithm are obtained to improve the energy-saving performance of the motor and the steady-state precision of the pressure control of the water supply network. The controller can automatically adapt to the change of the water consumption of the users. At the same time, the control model of water supply system is established by using MATLAB software, and the simulation research is carried out. Compared with the classical PID controller and the fuzzy PID controller, we can see that the dynamic indexes of the control system obtained by using the fuzzy PID controller and the anti-interference of the system can fully meet the design requirements of the system. And it is superior to the classical PID controller. In the fifth chapter, the design principle and method of the hardware and software of the variable frequency constant pressure water supply and energy saving system are introduced. In the fifth chapter, the fuzzy PID controller is run and tested on the actual hardware platform. It can be seen that the fuzzy PID controller can not only meet the theoretical design requirements, but also have practical feasibility.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU991.35
[Abstract]:The energy which relates to the national security people's life is the key of national economy and people's livelihood, and energy is the urgent lifeline and the motive force of sustainable development. The total energy utilization efficiency of China is only about 10%, which is only 50% of that of developed countries. The energy lost in the process of storage and production is 90% of the remaining amount, and only 10% of the terminal equipment is reached. The efficiency of energy utilization is very low. In recent years, the frequent "electricity shortage" has not only delayed the normal production of enterprises, but also caused the waste of GDP5% resources every year in our country, resulting in losses of 10% of GDP in our country. For the above two categories of statistics, the annual energy loss of 2 trillion yuan, this is quite shocking. Therefore, the energy-saving research is very meaningful, the economic benefits are very huge. For enterprises, energy waste indirectly causes the increase of energy cost and leads to inefficiency. Therefore, enterprises pay more and more attention to the energy saving of their equipment, and regard energy conservation as the key to high profitability. According to statistics, 65% of industrial energy consumption comes from motor, so the research of motor energy saving is undoubtedly the key to solve the problem. In this paper, the principle of pump energy consumption and motor loss in general constant water supply system are analyzed, and the load characteristics of pump load are theoretically analyzed. The relationship between the power and the speed of the pump motor leads to the energy saving method of the pump type load. Secondly, the control method of the current mainstream constant pressure water supply system is analyzed. Finally, a fuzzy PID control scheme is proposed on the basis of the analysis of the relationship between the power and the rotational speed of the pump motor. An efficient and practical control strategy and algorithm are obtained to improve the energy-saving performance of the motor and the steady-state precision of the pressure control of the water supply network. The controller can automatically adapt to the change of the water consumption of the users. At the same time, the control model of water supply system is established by using MATLAB software, and the simulation research is carried out. Compared with the classical PID controller and the fuzzy PID controller, we can see that the dynamic indexes of the control system obtained by using the fuzzy PID controller and the anti-interference of the system can fully meet the design requirements of the system. And it is superior to the classical PID controller. In the fifth chapter, the design principle and method of the hardware and software of the variable frequency constant pressure water supply and energy saving system are introduced. In the fifth chapter, the fuzzy PID controller is run and tested on the actual hardware platform. It can be seen that the fuzzy PID controller can not only meet the theoretical design requirements, but also have practical feasibility.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU991.35
【参考文献】
相关期刊论文 前4条
1 胡纲衡,唐瑞球,江志敏,何e，
本文编号：2292576
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