毕业论文

打赏
当前位置: 毕业论文 > 自动化 >

MATLAB前馈补偿的锅炉温度控制系统设计

时间:2019-10-15 20:51来源:毕业论文
基于MATLAB\Simulink软件,设计了锅炉温度前馈-反馈控制系统。首先,通过实验法确立了支路流量对内胆温度的传递函数,通过传递函数创建锅炉温度的数学模型。再通过MATLAB/Simulink完成参

摘要:锅炉在国内经济建设以及人民生活中扮演着重要的角色。而锅炉温度更是其中十分关键的参数。因此能对锅炉温度进行及时有效的控制就显得十分重要。但是温度与流量,压力等对象不同,控制反馈不这么迅速,容易受到干扰。同时,过程控制系统从干扰到控制量,从被控制量到调节器,都存在明显的延迟特性。所以,单一的控制系统早已无法满足现在的控制要求。在本次毕业设计中,以锅炉内胆水温为研究目标,基于MATLAB\Simulink软件,设计了锅炉温度前馈-反馈控制系统。首先,通过实验法确立了支路流量对内胆温度的传递函数,通过传递函数创建锅炉温度的数学模型。再通过MATLAB/Simulink完成参数整定。最后在THSA-1高级实验装置完成系统的设计,计算,并分析对比前馈-反馈系统对比反馈系统, 其具有①能够对主要干扰进行同步补偿,控制及时②能够补偿被控量模型发生变化产生的偏差,具有一定的适应性③降低前馈控制模型的精度要求,在实际工程上能够实现简单的通用模型,等特点。40999
毕业论文关键词:锅炉温度;前馈-反馈;PID;MATLAB/Simulink
Design of boiler temperature control system based on feed-forward compensation
Abstract: Boiler takes a huge effect in the domestic economic construction and people's life. And the boiler temperature is one of the most important parameters. So it is very significant to control the temperature of the boiler timely and effectively. But the temperature has the characteristic of the huge delay and nonlinear. At the feedforward-feedback control system of the boiler temperature based on the same time, the process control system has the significant delay characteristics from the interference to the control and from the controlled quantity to the regulator. So, the parameter in the traditional PID control method used in practice is not good enough currently. It has unsatisfactory setting and its accuracy of the control is too imprecise to achieve the control requirements difficultly. In this paper, I design the feedforward-feedback control system of the boiler temperature based on the MATLAB/Simulink software for the research object of the feedforward control system. Firstly, the transfer function of the branch flow to the boiler temperature is established through experiment method. Then, the mathematical model of the controlled object is established. And then, the parameter tuning can be completed through the MATLAB/Simulink software. At last, the design, the calculation of the system is completed in the lab, and the analysis of feedforward-feedback system compared to control system has a fast reaction speed, adaptability, extended using model and so on.
源`自<六:维*论-文>网/www.lwfree.cn

KeyWords: the boiler temperature; the feedforward-feedback system; PID; MATLAB/Simulink
目录
1 绪论1
 1.1 课题提出的意义1
 1.2 锅炉控制的发展概况1
 1.3 论文的主要研究内容2
2 PID控制器原理3
 2.1 PID控制器简介3
 2.2 PID控制系统3
 2.3 PID控制参数的整定及方法5
  2.3.1 PID控制参数的整定简介5
  2.3.2 PID控制参数的整定原则6
  2.3.3 PID控制参数的整定方法6 锅炉温度控制系统设计以及仿真8
 3.1 MATLAB/Simulink简介8
 3.2 前馈-反馈控制系统9
  3.2.1 前馈控制系统介绍9
  3.2.2 前馈控制的特点9
  3.2.3 前馈-反馈控制11
 3.3 控制系统设计11
  3.3.1 被控量建模11
  3.3.2 Kff,T1和T2参数的整定13
 3.4 仿真调试17
4 基于过程仪表的前馈-反馈控制系统实验与分析26
 4.1 实验平台介绍26
  4.1.1 实验装置27
  4.1.2 执行机构27
  4.1.3 智能仪表28
 4.2 实验操作32 MATLAB前馈补偿的锅炉温度控制系统设计:http://www.lwfree.cn/zidonghua/20191015/40912.html
------分隔线----------------------------
推荐内容