By Topic

IEE Proceedings - Control Theory and Applications

Issue 3 • Date May 1995

Filter Results

Displaying Results 1 - 11 of 11
  • Optimising individual control rules and multiple communicating rule-based control systems with parallel distributed genetic algorithms

    Publication Year: 1995, Page(s):211 - 215
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (396 KB)

    Genetic algorithms can be used to optimise either individual process control rules or complete rule based controllers. The paper describes the optimisation of individual rules to control combustion in multiple burner installations. To solve more complex problems where more than one rule base is necessary a method of optimising multiple communicating rule based control systems with distributed gene... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Generating piecewise-constant excitations with an arbitrary power spectrum

    Publication Year: 1995, Page(s):241 - 246
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    A comparison is made between zero-order-hold-noise (ZOH-noise) and ZOH-periodic excitations. Their ability to excite a system with maximum power and a specified power spectrum, while the peak value of the excitation is restricted, is studied View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of multilevel multiharmonic signals for system identification

    Publication Year: 1995, Page(s):247 - 252
    Cited by:  Papers (13)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (448 KB)

    The paper reviews the existing multifrequency signals available for linear system identification in the frequency domain. The motivation for an excitation with a specified Fourier amplitude spectrum, yet having a small number of signal levels, is then outlined. A design algorithm is described for the design of multilevel signals realising an arbitrarily defined set of Fourier specifications. It is... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Model reduction via parameter matching using a Gramian technique

    Publication Year: 1995, Page(s):186 - 196
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (588 KB)

    A model reduction technique based on parameter matching for single input single output (SISO) continuous systems is proposed. The reduced order models match various combinations (chosen by the designer) of four types of system invariant parameter of the full order system associated with low frequency response, high frequency response, low frequency power spectral density and high frequency power s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hierarchical planning using abstraction

    Publication Year: 1995, Page(s):197 - 210
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1124 KB)

    The hierarchical nonlinear planner, AbNLP, is introduced and its main features described, including the novel mechanisms by which abstraction is encapsulated within abstract operators, and possible interactions between developing levels of plan description are resolved. AbNLP has been developed in the rigorous tradition of STRIPS and TWEAK, and is therefore proposed as a foundation for the develop... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Identifying linear models of systems suffering nonlinear distortions, with a gas turbine application

    Publication Year: 1995, Page(s):229 - 240
    Cited by:  Papers (17)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (860 KB)

    The paper examines the effects of nonlinear distortions on the frequency domain estimation of linear models using multisine test signals. It is shown that odd-order nonlinearities will always introduce an error, the magnitude of which depends on the interaction of different types of nonlinear components, which in turn depends on the type of multisine used. A class of wideband pilot test signals is... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Genetic algorithms for fuzzy control.2. Online system development and application

    Publication Year: 1995, Page(s):177 - 185
    Cited by:  Papers (24)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (728 KB)

    For pt. 1 see ibid., p. 161-76 (1995). Some of the problems to be resolved in fuzzy controller design include the determination of the linguistic state space, definition of the membership functions of each linguistic term and the derivation of the control rules. Some of these problems can be solved by application of machine learning. First, it is desirable to simplify and automate the specificatio... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • System identification using partitioned least squares

    Publication Year: 1995, Page(s):223 - 228
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (400 KB)

    A novel partitioned least squares (PLS) algorithm is presented, in which estimates from several simple system models are combined by means of a Bayesian methodology of pooling partial knowledge. The method has the added advantage that, when the simple models are of a similar structure, it lends itself directly to parallel processing procedures, thereby speeding up the entire parameter estimation p... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Estimation of complex Fourier coefficients

    Publication Year: 1995, Page(s):253 - 256
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (244 KB)

    Estimating complex Fourier coefficients of periodic functions from additively error disturbed observations is discussed. This is the first step in most methods for estimating the parameters of linear dynamic systems from noise disturbed responses to periodic perturbation signals. In this type of estimation problem the period is known. Estimating complex Fourier coefficients is also the first step ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Genetic algorithms for fuzzy control.1. Offline system development and application

    Publication Year: 1995, Page(s):161 - 176
    Cited by:  Papers (50)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1188 KB)

    Although fuzzy logic controllers and expert systems have been successfully applied in many complex industrial processes, they experience a deficiency in knowledge acquisition and rely to a great extent on empirical and heuristic knowledge which, in many cases, cannot be objectively elicited. Among the problems to be resolved in fuzzy controller design are the determination of the linguistic state ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Model integration within a manufacturing simulation framework

    Publication Year: 1995, Page(s):216 - 222
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    The paper sets out to describe the development, function and operation of a design by manufacturing simulation system. The construction of a geometric modeller with its attendant object indexing and interaction detection modules is described. An automatic finite element meshing system is reported which allows a physical model to be fully embedded within the system. An interaction rule base is deve... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.