作者：
DUNIETZ, ISHSU, JLCMCEACHERN, MTSTOCKING, JHSWARTZ, MATROMBLY, RMThe authors
Irwin S. Dunietz John L.C. Hsu Michael T. McEachern James H. Stocking Mark A. Swartz andRodney M. Tromblyare responsible for design and development of the Manufacturing Process Control System. Mr. Dunietz joined AT&T in 1980. He is a member of the technical staff in the Manufacturing Information Automation department at AT&T Engineering Research Center Princeton New Jersey. He received an A.B. in mathematics from Cornell University and an M.S.E. in computer science from Princeton University. Mr. Hsu who joined AT&T in 1970 is a department head in the Manufacturing Information Automation department at the Engineering Research Center. He received an M.S. in electrical engineering from the University of Missouri. Mr. McEachern joined AT&T in 1962 and is a supervisor in the 5ESS™ Line Unit Manufacturing department at AT&T Technologies in Oklahoma City Oklahoma. He is responsible for the manufacturing process control center in Oklahoma City which provides computerized support for all circuit pack manufacturing. Mr. Stocking who joined AT&T in 1975 is a supervisor in the Manufacturing Information Automation department at the Engineering Research Center. He received a B.S. in chemical engineering from Rensselaer Polytechnic Institute and a Ph.D. in chemical engineering from the University of California Berkeley. Mr. Swartz joined AT&T in 1980 and is a member of the technical staff in the Manufacturing Information Automation department at the Engineering Research Center. He received an A.B. in computer science from Cornell University and an M.S. in computer science from Rutgers—The State University. Mr. Trombly who joined AT&T in 19 78 is an assistant manager at the AT&T Merrimack Valley Works in Massachusetts. Previously he was a supervisor at the Engineering Research Center. He holds a B.S. in computers and systems engineering and an M.S.E.E. from Rensselaer Polytechnic Institute.
The central challenge of all manufacturing is making products to the right standards and delivering them at the right time. AT&T is upgrading its corporate and factory resource planning systems to improve control ...
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The central challenge of all manufacturing is making products to the right standards and delivering them at the right time. AT&T is upgrading its corporate and factory resource planning systems to improve control of day-to-day manufacturing. The Manufacturing Process control System (MPCS), developed at the AT&T Engineering Research Center (ERC), provides this support. MPCS connects the shop floor with production scheduling, accounting, product data archive, and engineering support systems.
The paper describes the design conception of an industrial multiloop adaptive regulator and the practical approach of the implementation of a highly reliable adaptive control strategy.
The paper describes the design conception of an industrial multiloop adaptive regulator and the practical approach of the implementation of a highly reliable adaptive control strategy.
Some new self-tuning control algorithms are presented here based on nonparamet-ric system description. An appropriate truncation of the model offers suboptimal control law avoiding the inverse instability and ensuring...
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Some new self-tuning control algorithms are presented here based on nonparamet-ric system description. An appropriate truncation of the model offers suboptimal control law avoiding the inverse instability and ensuring robust behaviour for the control system. The self-tuning control was realized on a microcomputer developing system connected to an analogue model via an I/O card. Examples illustrating the behaviour of the control algorithms are also presented
The paper presents an adaptive Smith predictor. The algorithm is a combination of a RLS parameter estimation and the Smith predictor. For time-delay estimation two techniques are suggested: the Kurz's algorithm an...
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The paper presents an adaptive Smith predictor. The algorithm is a combination of a RLS parameter estimation and the Smith predictor. For time-delay estimation two techniques are suggested: the Kurz's algorithm and a simple method proposed in this study. The performance of the adaptive Smith predictor control is illustrated by simulation examples. The time responses of an adaptive FID and the adaptive Smith control are demonstrated as well.
The paper presents a recursive parameter estimation and the associated structure estimation method using El ementary S ubSystem (ESS) representation of S1S0 systems. Besides the ability of estimating the structure and...
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The paper presents a recursive parameter estimation and the associated structure estimation method using El ementary S ubSystem (ESS) representation of S1S0 systems. Besides the ability of estimating the structure and tracking time-varying parameters, the elaborated procedure can also be applied to track time-varying structures. The proposed method is illustrated by simulation examples.
The paper describes a very simple class of adaptive PID regulators, where the the method is based on the explicit identification of the process and a design equation is used ensuring 5% overshoot in the step response....
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The paper describes a very simple class of adaptive PID regulators, where the the method is based on the explicit identification of the process and a design equation is used ensuring 5% overshoot in the step response. The algorithm is dedicated for micro-processor based compact controllers (MBCC's).
The strong consistency of ML estimators for Partial Fraction Matrix (PFM) and Elementary SubSystem (ESS) representations of vector ARMA processes will be discussed for the case, when the structure is overestimated. Th...
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The strong consistency of ML estimators for Partial Fraction Matrix (PFM) and Elementary SubSystem (ESS) representations of vector ARMA processes will be discussed for the case, when the structure is overestimated. The main results of the paper are the off-line strong consistency theorems of ML estimators for PFM representation, when the number of poles is overestimated and for the ESS representations when the number of ESS-s associated with the poles is overestimated.
This paper is concerned with the problem of optimal daily scheduling of the electricity production by power system of thermal power plants. The problem and its model is closely related to the so called optimal unit co...
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This paper is concerned with the problem of optimal daily scheduling of the electricity production by power system of thermal power plants. The problem and its model is closely related to the so called optimal unit commitment problems. The main difference is that in our approach the transmission network is also taken into account. Beside the variables and constraints describing the production of the individual power plants there are also variables characterizing the state of the network. The constraints imposed bv the transmission system and the active power losses are also taken into consideration. A further difference is in the way in which we deal with the units of the power stations. Instead of the operation of single units we take always the feasible combined operations of the units of a power station into account. Time-dependent stillstand and restart costs are involved. A special type of constraint appearing in our problem is the so-called fuel constraint. This requires that in some power plants the daily overall production - directly connected with fuel consumption - should differ from a given value only to the extent of a very small percentage.
Based on some relations discovered between the deterministic servo regulator and the PID design a simple design role is presented for stable processes to ensure 5% relative overshoot for the closed loop step response....
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Based on some relations discovered between the deterministic servo regulator and the PID design a simple design role is presented for stable processes to ensure 5% relative overshoot for the closed loop step response. The adaptive solution is based on the explicit identification of a second order process model with time delay. Extending the PID regulator by an appropriate correcting term the poorly damped or inverse unstable process zero is allowed to be a zero of the closed loop system, as well. Additional pole placement is also available.
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