摘要:

A comparative analysis of three identification algorithms, which minimise the sum of the squared errors between the model output and the observations of the output, is presented. Batch least-squares and extended recursive least-squares algorithms can be used to identify the model structure goodness of ARMAX application of each algorithm are investigated.

ISSN:0020-7721    

DOI:10.1080/00207728908910207

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

A new recursive predictor is developed based on the instrumental variable identification algorithm. Flow prediction algorithms are reviewed and their computational requirements are examined. Using available data for the White Nile river, prediction results have been investigated for the daily flow. It shows that the proposed predictor is very simple and accurate for the on-line time-varying river-flow prediction.

ISSN:0020-7721    

DOI:10.1080/00207728908910208

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Fault detection, identification and monitoring play a primary role in systems engineering. This also holds for advanced processes, such as robotic systems, with highest demands on reliability and safety. A method is presented for fast fault detection and location, due to the data deweighting in the identification procedure of the monitored process parameters and the iterative on-line calculation of the statistics of the fault detection scheme. This method has many advantages for microcomputer applications and guarantees a very early process fault detection. Application of the method to the fast fault detection of the de motor actuators of a robotic system is described.

ISSN:0020-7721    

DOI:10.1080/00207728908910209

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The sufficient conditions for the robust stability of constrained uncertain time delay systems are presented in the time domain. The properties of the matrix measure and comparison theorem are used in the formulation. Then, a method is proposed for the design of a robust state feedback controller to satisfy the robustness requirement. Examples are given to illustrate the proposed method.

ISSN:0020-7721    

DOI:10.1080/00207728908910210

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Three well-known stability preserving methods of reduction are shown to be special forms of the multipoint pade approximation. Two of the methods—the modified forms of the Schwarz approximation and the stability equation method—are consequently shown to be closely related. Previously observed properties of the methods are explained by treating them as multipoint approximants, and the significance of using expansion points on the imaginary axis is shown to be central to stability preservation.

ISSN:0020-7721    

DOI:10.1080/00207728908910211

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

When the generators of a coherent group in a power system are equivalenced for transient stability studies, it is logical that the associated controllers—excitation controllers and the speed governing systems—are also equivalenced. Depending upon various design features and capacity, the time constants of the transfer functions of different controllers may be different. This paper presents a Walsh function approach for equivalencing the controllers in multi-machine power systems, taking into account the above differences. The approach has an elegant mathematical base and provides any desired level of accuracy.

ISSN:0020-7721    

DOI:10.1080/00207728908910212

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The semi-Markov performance model of a bus protocol (IMAP—improved token bus multi-access protocol), suitable for embedded networks, is presented. IMAP is an improvement over the token bus scheme, and has been proposed by Sood et al. (1986). The semi-Markov model is developed by considering the normal and interrupt modes of operation of IMAP. The performance of IMAP is compared to that of the token bus scheme.

ISSN:0020-7721    

DOI:10.1080/00207728908910213

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The solution of a dual criterion observation-weighted control problem is derived for linear single input/single output stochastic systems. The cost function involves the observation-weighted-type error and control weighting terms and also the sensitivity and complementary sensitivity weighting functions. The polynomial equation approach is applied so that the controller may be expressed in terms of the solution of diophantine equations. Some special cases, in which one or more weighting terms are set to zero, are also discussed.

ISSN:0020-7721    

DOI:10.1080/00207728908910214

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor