Adaptive Controllers in Practice '97 (Digest No: 1997/176), IEE Colloquium on

10 Apr 1997

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  • IEE Colloquium on Adaptive Controllers in Practice '97 (Digest No.1997/176)

    Publication Year: 1997
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (64 KB)

    The following topics were covered: model uncertainty in controller design; idle speed control using nonlinear controller-observer pair; multiple model adaptive control schemes; adaptive PIP control; greenhouse systems; dynamic traffic management; turbine generator MIMO self-tuning control; feedforward control of metal rolling mills; gas turbine modelling; activated sludge process; adaptive PID alg... View full abstract»

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  • Adaptive controller considerations for an activated sludge process within a waste water treatment plant

    Publication Year: 1997, Page(s):8/1 - 8/3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (188 KB)

    The activated sludge process is a biological process used for secondary treatment of sewage and is probably the most widely used method in the waste water industry. However there are still a number of problems that are required to be solved and these may be broadly categorised in terms of external disturbances and internal complexities, the effects of which are both exacerbated due to the nonlinea... View full abstract»

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  • Towards the application of multiple model adaptive control schemes

    Publication Year: 1997, Page(s):3/1 - 3/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (312 KB)

    When there is a high degree of uncertainty associated with the modelling of the plant dynamics, the parameters in the adaptation algorithm cannot be initialised “close” to their real values and the identification process can take a considerable time to complete due to the slowness of the algorithm. Such difficulties have led to the emergence of a new general approach to the adaptive co... View full abstract»

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  • Self-tuning predictive control of a hydraulic test rig

    Publication Year: 1997, Page(s):12/1 - 12/3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (192 KB)

    Despite a number of convincing application studies the industrial take up of the more advanced algorithms has been slow. One of the major reasons for this with respect to hydraulic systems is that the cost of getting the tuning wrong can be highly destructive and expensive. As a result a conservative approach is used and there is a reluctance to relinquish responsibility for tuning to an adaptive ... View full abstract»

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  • Adaptive control for industry: feedforward control for metal rolling mills

    Publication Year: 1997, Page(s):6/1 - 6/2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (140 KB)

    This paper reviews a class of controllers applied to the industrial rolling of metal. After defining the rolling process the paper reviews the general control solutions and provides some case studies View full abstract»

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  • On model uncertainty in adaptive controller design

    Publication Year: 1997, Page(s):1/1 - 1/3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (216 KB)

    The accurate representation of processes for controller design is, in many situations, a convoluted problem; lack of process information, neglected process dynamics, time varying characteristics and inherent nonlinearity all complicate the modelling process. Two distinct approaches have emerged to deal with the problem of model uncertainty: robust control and adaptive control. By their nature, rob... View full abstract»

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  • Adaptive PID algorithms for industrial microcontrollers

    Publication Year: 1997, Page(s):9/1 - 9/3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (172 KB)

    The Zepadig 10 industrial controller from ZPA Nova Paka was developed to provide accurate process control, auto-tuning and digital technology adaptation. The product is based on the Philips 80C552 microcontroller which has standard components allowing product modularity. The main control loops on the controller include: single loop, ratio control, dual loop cascade control, auto-tuning, gain-sched... View full abstract»

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  • Adaptive PIP control with applications to greenhouse systems and dynamic traffic management

    Publication Year: 1997, Page(s):4/1 - 4/3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (280 KB)

    Proportional-integral-plus (PIP) controllers, based on nonminimal state-space design methods have been successfully implemented in a number of difficult applications including, for example, self-adaptive control of a nonlinear temperature control system, control of glasshouse micro-climate, etc. The present paper concentrates on adaptive versions of the controllers, where the identification and es... View full abstract»

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  • Modelling of a gas turbine: a precursor to adaptive control

    Publication Year: 1997, Page(s):7/1 - 7/5
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (316 KB)

    A generic method for modelling the dynamic performance of gas turbines has been developed based on a series of modular component models. The user chooses what gas flow and mechanical connections are to be made between the component models and can easily construct single shaft, twin shaft, recuperated, reburner, intercooled or other arrangements. In this paper the basic modelling principles are exp... View full abstract»

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  • Idle speed control using a nonlinear controller-observer pair

    Publication Year: 1997, Page(s):2/1 - 2/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (336 KB)

    This paper is concerned with multivariable controller design for the idle speed control of an automotive engine. A sliding mode controller design methodology and its implementation on an automotive engine is explained. Finally, the results from the engine rig trials are presented View full abstract»

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  • Frequency-domain adaptive control with design constraints

    Publication Year: 1997, Page(s):11/1 - 11/3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (232 KB)

    We show how the frequency-domain LMS algorithm can be used in adaptive controllers to minimize the variance of an error signal, while including design constraints. We also showed how the frequency-domain LMS can be modified and used in an internal model controller, to implement an adaptive controller which track changes in the disturbance, while maintaining robust stability to changes in the plant... View full abstract»

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  • Multi-input multi-output self-tuning control of a turbine generator

    Publication Year: 1997, Page(s):5/1 - 5/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (220 KB)

    Power system stability is one of the most important considerations in turbine generator control. Traditionally, efforts to improve transient performance of a turbine generator have been concentrated only on excitation control. Although a significant enhancement in the system damping can be obtained through excitation control, there are limits to which improvements in the stability limit can be ach... View full abstract»

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