Studies on the Identification and Control of Multi-rate Systems

多速率系统辨识与控制研究

基本信息

批准号：
13650492
负责人：
MIZUMOTO Ikuro
金额：
$ 2.11万
依托单位：
Kumamoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650492/
关键词：
Multirate systems Adaptive Control Process control Discrete control systems

项目摘要

Multirate systems are very common in the chemical process industry. This is so because many property or quality variables that one wants to regulate are not available at as fast a sample rate as one desires. Typically, the primary measurements such as the composition, density or molecular weight distribution measurements take several minutes or even more than one hour of analysis time. On the other hand secondary measurements such as flow-rates, temperatures and pressures are sampled at relatively fast rate, and usually the manipulative variables can be adjusted at relatively fast sample rates, the only limitation being the slow sampling of the primary variables. This research was concerned with the analysis and design of such multirate systems, where the outputs or the variables to be regulated are only available at regular but slow sample rates and secondary variables can be measured as fast as the manipulative variables; in particular, the following topics were studied.(1) Adaptive control system design for multirate systems(2) Design of a model output following control system for multirate systems(3) A novel ripple free multirate control system design(4) Application of the proposed method to mechanical servo systemsand we also examined identification of chemical multirate processes and applicability of the proposed method to process such as CSTR with international collaborative researchers.

多速率系统在化学加工工业中非常常见。之所以如此，是因为人们想要调节的许多属性或质量变量无法以人们希望的那么快的采样率获得。通常，主要测量（例如成分、密度或分子量分布测量）需要几分钟甚至一个多小时的分析时间。另一方面，诸如流量、温度和压力之类的二次测量以相对较快的速率进行采样，并且通常可以以相对较快的采样速率调整操纵变量，唯一的限制是主要变量的采样速度较慢。这项研究涉及这种多速率系统的分析和设计，其中输出或要调节的变量只能以常规但缓慢的采样率获得，并且次要变量可以与操纵变量一样快地测量； (1)多速率系统的自适应控制系统设计(2)多速率系统的模型输出跟随控制系统设计(3)一种新型无纹波多速率控制系统设计(4)多速率系统的应用我们还与国际合作研究人员一起研究了化学多速率过程的识别以及所提出的方法对 CSTR 等过程的适用性。