PROCESS CONTROL - RELEVANT AND CLOSED - LOOP IDENTIFICATION Paul

نویسنده

  • Raymond de Callafon
چکیده

The identi cation of dynamical systems on the basis of data, measured under closed-loop experimental conditions, is a problem which is highly relevant in many (industrial) applications. When using models as a basis for model-based robust control design both nominal models and model uncertainty bounds are required. In this paper it is shown how -in particularmodel uncertainty bounds can be obtained from closedloop experimental data in the classical prediction error identi cation framework. The considered uncertainty structure is adjusted so as to allow direct evaluation of the performance robustness of both the actual and a to-be-designed controller.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Closed-loop Identification of Restricted Complexity Models Using Iterative Refinement

A novel technique for closed-loop sytem identification of reduced-order models is presented. The method arrives at a process model and its corresponding compensator in an iterative fashion by introducing a series of step changes at the manipulated variable/setpoint. The bias introduced into the identification data set by the closed-loop system, coupled with a control-relevant prefilter, yields ...

متن کامل

i-pIDtune: An interactive tool for integrated system identification and PID control

This paper describes i-pIDtune, an interactive software tool that integrates system identification and PID controller design. The tool supports experimental design and execution under plant-friendly conditions, high-order ARX estimation, and control-relevant model reduction leading to models that comply with the IMC-PID tuning rules. All these stages are depicted simultaneously and interactivel...

متن کامل

Approximate identification with closed-loop performance criterion and application to LQG feedback design

Alam, act-A model-based controller generally works better w3th the model than vath the modelled plant due to the modelhng error This dtfference between the performances can be made small by selecting a model that ts accurate at the closed-loop relevant frequenoes In thts paper tt ts shown that an tteraUve approach of tdenttficatmn and control design can lead to a model that ts much better state...

متن کامل

For model-based control design, closed-loop identification gives better performance

In identification for control with no unmodelled dynamics, the best controller performance is achieved by performing the identification in closed loop. Alan'S-We compare open loop versus closed loop identification when the identified model is used for control design, and when the system itself belongs to the model class, so that only variance errors are relevant. Our measure of controller perfo...

متن کامل

Experiment Design for Closed-loop Performance Diagnosis ⋆

This paper uses prediction error identification to distinguish control-relevant system changes in closed-loop operation from variations in disturbance characteristics. The approach consists of a hypothesis test to verify whether an identified model of the true system lies in a set containing all models that exhibit adequate closed-loop performance. To increase the detection probability, i.e. th...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003