Showing papers in "IFAC Proceedings Volumes in 1985"

TL;DR: In this paper, the identifiability analysis of linear, time-invariant models has been studied in the context of parameter estimation, which is referred to as numerical or a posteriori identifiabi1ity analysis, given that the parameters are known to be structurally identifiable.

TL;DR: Extended Prediction Self-Adaptive Control as mentioned in this paper is a control strategy in which the calculation of the controller's actions is based on an adaptive long-range prediction of the resulting process output.

TL;DR: In this article, the problem of updating the posterior parameter density without an explicit model of parameter variations is formulated as a statistical decision problem, and the solution considerably generalizes the well-known technique of exponential forgetting.

TL;DR: The instrumental variable (IV) method for the identification and estimation of discrete-time, transfer function (TF) models for stochastic dynamic systems was introduced in this article.

TL;DR: A comparison between the two approaches to parameter identification from measurements corrupted by unknown-but-bounded errors is outlined and a combined use of the positive aspects of both procedures is proposed.

TL;DR: In this article, the NARMAX model is used to identify nonlinear heat exchanger models and the application of model validity tests to detect the existence of unmodelled linear or nonlinear terms in the residuals is discussed.

TL;DR: In this article, simple computations methods for the determination of nonlinearity of a system from input/output records are presented, which do not require long computation time and have to be independent of the concrete nonlinear structure and the order of the linear dynamic part in the process.

TL;DR: The place of parameter-bounding algorithms in identification methodology is discussed, and their usefulness is established by giving examples of experiment design, testing for outliers, toleranced prediction and worst-case design.

TL;DR: A new method, based on the idea to retain a constant amount of information in the estimator, is presented, which is shown to avoid well-known problems associated with other schemes.

TL;DR: In this paper, the problem of controlling robots with rotary flexible joints is considered and the model is shown to be singularly perturbed if the amount of flexibility at joints is small.

TL;DR: Improvements in speed of the optimal power flow and the inclusion of the latter into a closed loop secure economic dispatch are presented and a new load flow technique with “implicit active reactive coupling” is presented.

TL;DR: In this article, the stability and robustness analysis of various tractable and easily implementable feedback control laws for robotic systems with a single mechanical arm or a pair of master and slave robot arms with different structures is presented.

TL;DR: Realtime control charting of glass batch scale weight data has yielded significant improvement in batch consistency and better glass compositional control as well as faster and more efficient scale adjustments.

TL;DR: In this paper, the authors outline and discuss some of the methodologies and approaches developed to solve the hydrothermal scheduling problem in different systems, and discuss the complexity of the problem.

TL;DR: In this paper, a class of discrete-time Lyapunov min-max controllers were obtained for linear, scalar input, phase variable systems with bounded parameter and input uncertainties.

TL;DR: A number of specific results are presented aimed at gaining a unified description of certain aspects of modern estimation and control theory and isolating those features of particular algorithms which might give enhanced robustness properties especially when implemented digitally.

TL;DR: Techniques for approximate determination of the dominant poles are derived, as well as design methods based on these formulas which are shown to be suitable for automatic tuning of PID controllers.

TL;DR: This survey of adaptive control theory and its applications reviews the progress during the years 1980 till 1984 and shows that carefully designed adaptive control systems have been used successfully in a broad variety of application areas.

TL;DR: It is shown that the presence of an independent stationary noise process corrupting the input will not affect input-output cross correlations aside from proportionality constants.

TL;DR: An architecture for an expert system to assist a control engineer in coping with the complexity of computer-aided control engineering is discussed, with major emphasis placed on implementation.

TL;DR: In this article, it is argued that the supervisory control of complex industrial processes having a potential for serious consequences in case of accidents requires careful consideration of the allocation of decision making between the three main agents of control; namely the designer, the operator and the automatic control system.

TL;DR: In this paper, a suboptimal dual controller is presented, where the loss function that minimizes the performance index for the control is a measure of the quality of the estimation of the unknown parameters of the process.

TL;DR: In this paper, a new method called generalized predictive control (GPC) is proposed to control non-minimum phase oscillators, which is capable of good control of particularly difficult processes such as nonminimum-phase oscillators.

TL;DR: This paper has coined the term adaptive robust control rather than the usual term robust adaptive control, which is simply a combination of a “robust” control law with a "robust" parameter estimator.

TL;DR: In this paper, the problem of dynamic control of a planar robot arm with non-zero joint elasticity is considered and the main purpose of the paper is to design a dynamic statefeedback compensator, which makes the external behavior of the controlled robot identical to the one of a prescribed decoupled linear model.

TL;DR: In this article, the consumption rate of ammonia in glutamic acid fermentation was found to be correlated with consumption of sugar, and a good control strategy for sugar feed rate was proposed to keep sugar concentration in a suitable range in fed-batch culture of glutamic acids fermentation.

TL;DR: Current trends in the field of man-machine systems are characterized, including an emerging equivalence and transformabi1ity relation between computer-based decision aids and normative models of human performance.

TL;DR: In this article, the authors describe experiments in which combined state and parameter estimation is used to determine viscous and Coulomb friction terms associated with a prototype electro-rheological (ER) vibration damper.

TL;DR: The use of expert systems technology allows the transfer of recent developments in control system design to users who may not be experts in either theoretical developments or computer technology, in a vehicle which provides considerable design flexibility.

TL;DR: A quantitative model is applied to different software fault tolerant techniques and the impact of a binary output space, which occurs quite often in safety critical real-time systems, is analysed.