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Control Theory and Applications, IEE Proceedings -

Issue 3 • Date May 1999

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Displaying Results 1 - 7 of 7
  • Prediction of limit-cycles in nonlinear two-input two-output control systems

    Publication Year: 1999 , Page(s): 253 - 258
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (276 KB)  

    An extension of the stability-equation method for prediction of limit-cycles in nonlinear two-input two-output (TITO) control systems is presented. A system with two nonlinearities is considered first, then a system with four nonlinearities is analysed. The presented method is useful for preliminary analysis and design of automatic tuning of PID controllers for TITO processes with decentralised re... View full abstract»

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  • Analysis of hybrid feedback systems with PFM mechanisms

    Publication Year: 1999 , Page(s): 259 - 264
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (380 KB)  

    A graphical method is proposed for analysing hybrid feedback systems with PFM mechanisms. The system comprises a pulse frequency modulator (PFM) in the feedforward path and a linear constant plant in the feedback. The describing function approach is employed, applied not to the original system, but to an equivalent system. The approach takes into account two types of pulse, impulses and finite-hei... View full abstract»

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  • Model reference control in two degree of freedom control systems: adaptive min-max approach

    Publication Year: 1999 , Page(s): 273 - 281
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (556 KB)  

    The design of a control system, that provides a model reference performance specification for the command response and, at the same time, achieves some prespecified feedback properties, is discussed. The use of a particular configuration of a two degree-of freedom controller allows the feedback and performance specifications to be tackled independently through the design of a feedback controller f... View full abstract»

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  • Hierarchical fuzzy-based support system for anaesthesia monitoring and control

    Publication Year: 1999 , Page(s): 265 - 272
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (448 KB)  

    Describes research into a hierarchical architecture for fuzzy logic monitoring and control of intravenous anaesthesia with two main objectives. The primary task is to utilise auditory evoked response signals for augmenting cardiovascular and body function signs into a multisensor fuzzy model-based fusion strategy for anaesthesia monitoring and control. The secondary task is to extend an existing f... View full abstract»

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  • Intelligent process model for robotic part assembly in a partially unstructured environment

    Publication Year: 1999 , Page(s): 282 - 288
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (456 KB)  

    A process model for part assembly, using robotic manipulators, is introduced. Part bringing, in an environment that contains obstacles, is accomplished by combining a neural network control strategy, co-ordinating with a fuzzy optimal process model to bring a part from an initial position to a destination (target) for the purpose of part insertion. Fuzzy set theory, well suited to the management o... View full abstract»

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  • Periodic output feedback control for singularly perturbed discrete model of steam power system

    Publication Year: 1999 , Page(s): 247 - 252
    Cited by:  Papers (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (332 KB)  

    A method is proposed to design a periodic output feedback controller for singularly perturbed discrete systems. A state feedback controller designed from the singularly perturbed discrete system has been used to compute output injection gain. This output injection gain has been used to compute the periodic output feedback gain. The method does not require the states of the system for feedback. The... View full abstract»

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  • Robust controller design with novel sliding surface

    Publication Year: 1999 , Page(s): 242 - 246
    Cited by:  Papers (13)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (196 KB)  

    A sliding surface is proposed by defining a virtual state. This sliding surface has the nominal dynamics of an original system and makes it possible to use the sliding-mode control technique with various types of controller. Its design is based on an augmented system whose dynamics have a higher order than that of the original system. The reaching phase is eliminated by using an initial virtual st... View full abstract»

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