Showing papers in "IFAC Proceedings Volumes in 1976"

TL;DR: The method basically consists of computing final ratings for each alternative and comparing the weighted final ratings, and considering each of these variables as fuzzy quantities, characterized by appropriate membership functions.

TL;DR: In this paper, a matrix norm condition is given under which the large eigenvalues of a two-time scale system will be sufficiently separated from the small eigen values, and a feedback control design is proposed in which two gain matrices are used for separate placement of small and large values.

TL;DR: The use of fuzzy set theory to design controllers has been pursued as a combined project by the University of Manchester Institute of Science and Technology and the British Steel Corporation as mentioned in this paper, which has led to an on-plant trial at Cleveland Sinter Plant where anticipated improvements in plant performance were achieved.

TL;DR: In this article, a traffic optimization logic (TOL) based on the criterion of minimization of traffic operating costs and disturbance of the environment at a given traffic demand was developed.

TL;DR: In this paper, a multi-level control scheme based on the decomposition-aggregation method is developed for stabilization of input-decentralized linear systems, where local linear feedback controllers are used to stabilize each decoupled subsystem, while global linear feedback controller is utilized to minimize the coupling effect among the subsystems.

TL;DR: In this paper, basic considerations in longitudinal control for small automated transit vehicles operating at moderate speeds and short headways are examined based on dynamic response during nominal and emergency operations, sensing and communication requirements, and simplicity of controller design.

TL;DR: It is demonstrated by the results of simulations that this control concept keeps traffic flow at high performance, while in the uncontrolled case congestion would occur under peak demand.

TL;DR: A new method for solving the problem of optimal assignment of employees to work places in a given organizational structure by using in a “direct” way of verbal descriptions determining the work results of particular employees and the whole structure as functions of some factors.

TL;DR: In this article, the main large-scale control problems in electric power system operation, from optimal aliocation of generation and transmission resources to network state estimation, frequency and exchange power control, system stability and dynamic security, are illustrated and the methods presently used to solve them are recalled.

TL;DR: In this article, the Branch and Bound approach is utilized to develop solution methods for maintenance scheduling and unit commitment in power systems, where the Branch-Bound approach is used to solve the problems of unit commitment and maintenance scheduling.

TL;DR: The current state of the art of handling multiprocessor distributed systems will be examined and it appears possible to obtain the reliability inherent in analog systems with the greater functional capability and lower cost of digital implementation.

TL;DR: In this article, the usefulness of the prediction principle for the decomposition and the coordination of constrained optimization problems is demonstrated in a general formation of mathematical programming in infinite dimensional spaces, and the convergence of the resulting coordination algorithm is studied in the particular case of a quadratic criterion and affine equality constraints.

TL;DR: In this article, a model error estimator with orthogonal functions is proposed to compensate for model errors in parameters and model order, and the model error-corrected signal is then used for control.

TL;DR: The photometric machine described is shown to have relative wide application in preconcentration and scavenging operations and the DATAC system for assessment of sample sortability is introduced and a list of qualitative preliminary results is presented.

TL;DR: In this article, the application of a Kalman-Bucy filter to a ball-milling circuit, to estimate the state of the process in real time, without direct measurement of particle size, was described.

TL;DR: Two primary measures of performance for algorithms designed to detect accidents and other incidents which obstruct the flow of traffic on freeways are the detection rate and taise alarm rate, which involve the choice of several parameters, or thresholds, to achieve hiqh detection rates and low false alarm rates.

TL;DR: A new structure of on-line dynamic coordination is proposed, based upon partition of the optimization horizon and the use of feedback for two kinds of actions of the coordinator: correction of “prices” and repetitive optimization.

TL;DR: The Video Inertial Pointing (VIP) system as mentioned in this paper uses a single sensor to provide information for the generation of three axis pointing error signals and for a cathode ray tube (CRT) display of the star field.

TL;DR: The mathematical model basic to the results of "The Limits to Growth" has been found to be very sensitive to small perturbations as discussed by the authors, and even qualitatively different results, such as the avoidance of the predicted disastrous collapse of world population, can be obtained by a combination of small changes.

TL;DR: In this paper, Liapunov-like conditions for asymptotic stability of singularly perturbed dynamic systems are established, which are used as a basis to link singular perturbation approach and vector LFO approach to the stability analysis of large-scale systems.

TL;DR: In this paper, a closed form analytic expression is mined for the feedback matrices leading to any placement of the system poles in the left half-plane of the complex plane, and an ad hoc synthesis procedure, based on the preventive construction of a simplified dynamic model retaining only the selected modes, is proposed.

TL;DR: In this article, a stability study of non-linear discrete composite systems with structural perturbations by the use of vectorial norms (V.N) is presented, in which different criteria of exponential, absolute and asymptotic stability can be stated.

TL;DR: In this article, a control system which maintains stable mill operation at maximal mill power consumption in spite of ore quality variations is described, and results from full scale test in an industrial mineral dressing plant are included.

TL;DR: Several algorithms for the unique solution to multiple objective programs are proposed by introducing concept of satisfaction conditions and preference ordering among objective functions and the resulting solutions satisfy Pareto optimality.

TL;DR: In this paper, the magnetic bearings used for the suspension of momentum wheels provide conclusive advantages: the low friction torques and the absence of abrasion allow the realization of lightweight high-speed wheels with high angular momentum and energy storage capacity and virtually unlimited lifetime.

TL;DR: In this article, a two-level method is developed for the optimization of non-linear dynamical systems with a quadratic cost function, which uses an expansion around the equilibrium point of the system to fix the second and higher order terms.

TL;DR: In this paper, game theoretic ideas are employed in establishing the tradeoffs between control effort and degree of stabilization for a class of feedback controls, particularly suited for decentralized stabilization of interconnected systems.

TL;DR: A software package is described which allows to design control algorithms by an interactive procedure between a process computer and the operator, based on discrete parametric process models, which have been identified on-line by the same process computer.

TL;DR: In this paper, the authors apply a hierarchical control algorithm to street traffic control and demonstrate that it may be possible to implement the algorithm with microprocessors, and demonstrate the use of modern mini and micro computers in a hierarchical setting for traffic control.