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Dynamic behaviour modelling

Wehrli, P. / Todtli, J.

For control purposes a linear model is often used to describe the behaviour of HVAC plants. This article from Switzerland describes a method for calculating the parameters of delay time, time lag and gain. A model step (or pulse response) is calculated analytically as a function of the parameters and is fitted to a measured step by a Fletcher-Powell-Davidon optimisation. One example shows the method used to evaluate the relation between the parameters and the operating point of a heater battery; the other describes how a PID controller is adjusted automatically using the identified parameters. Mr Wehrli is an engineer with Landis & Gyr and Dr Todtli is with the Federal Institute of Technology, Zurich.

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Dynamic behaviour modelling

Wehrli, P. / Todtli, J.

For control purposes a linear model is often used to describe the behaviour of HVAC plants. This article from Switzerland describes a method for calculating the parameters of delay time, time lag and gain. A model step (or pulse response) is calculated analytically as a function of the parameters and is fitted to a measured step by a Fletcher-Powell-Davidon optimisation. One example shows the method used to evaluate the relation between the parameters and the operating point of a heater battery; the other describes how a PID controller is adjusted automatically using the identified parameters. Mr Wehrli is an engineer with Landis & Gyr and Dr Todtli is with the Federal Institute of Technology, Zurich.

Dynamic behaviour modelling

Wehrli, P. / Todtli, J.

For control purposes a linear model is often used to describe the behaviour of HVAC plants. This article from Switzerland describes a method for calculating the parameters of delay time, time lag and gain. A model step (or pulse response) is calculated analytically as a function of the parameters and is fitted to a measured step by a Fletcher-Powell-Davidon optimisation. One example shows the method used to evaluate the relation between the parameters and the operating point of a heater battery; the other describes how a PID controller is adjusted automatically using the identified parameters. Mr Wehrli is an engineer with Landis & Gyr and Dr Todtli is with the Federal Institute of Technology, Zurich.

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Document information

Title:

Dynamic behaviour modelling

Contributors:

Wehrli, P. (author) / Todtli, J. (author)

Published in:

Building Research & Information ; 14 ; 51-54

Publication date:

1986-01-01

Size:

4 pages

ISSN:

1466-4321 , 0961-3218

DOI:

https://doi.org/10.1080/01823328608726717

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

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