摘要:

It is shown that, for a large class of linear multivariable plants with multiple time-delayed inputs, robust digital set-point tracking controllers can be readily designed. The general design methodolgy is based upon the asymptotic analysis of the closed-loop characteristic roots of digitally controlled plants for large sampling periods, and is illustrated by designing a robust digital set-point tracking controller for a boiler furnace with four inputs and four outputs.

DOI:10.1049/ip-d.1982.0060

出版商:IEE    

年代:1982

数据来源: IET

摘要:

The paper considers Smith predictor control structures for multivariable process plant with separable delays on the output and analyses the robustness of the control scheme with respect to mismatch between the real plant and its model and simultaneous changes in plant dynamics. The cases of additive and feedback mismatch are considered separately and represented in the form of easily checked graphical stability criteria in the frequency domain.

DOI:10.1049/ip-d.1982.0061

出版商:IEE    

年代:1982

数据来源: IET

摘要:

Model-reference adaptive schemes are usually designed on the assumption that the structure of the plant transfer function is known, only the parameter values being uncertain. In the paper, the stability properties of such systems are studied when the plant can only be approximately represented by a model of the type assumed, i.e. when its transfer function does not belong to the class for which exact matching with the reference model can be achieved.

DOI:10.1049/ip-d.1982.0062

出版商:IEE    

年代:1982

数据来源: IET

摘要:

A decentralised control scheme is proposed for stabilisation of large-scale systems using dynamic controllers with local output feedback. The scheme is robust with respect to uncertainties in parameters and nonlinearities in the interactions among the subsystems.

DOI:10.1049/ip-d.1982.0063

出版商:IEE    

年代:1982

数据来源: IET