adaptive control


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adaptive control

[ə′dap·tiv kən′trōl]
(control systems)
A control method in which one or more parameters are sensed and used to vary the feedback control signals in order to satisfy the performance criteria.

Adaptive control

A special type of nonlinear control system which can alter its parameters to adapt to a changing environment. The changes in environment can represent variations in process dynamics or changes in the characteristics of the disturbances.

A normal feedback control system can handle moderate variations in process dynamics. The presence of such variations is, in fact, one reason for introducing feedback. There are, however, many situations where the changes in process dynamics are so large that a constant linear feedback controller will not work satisfactorily. For example, the dynamics of a supersonic aircraft change drastically with Mach number and dynamic pressure, and a flight control system with constant parameters will not work well. See Flight controls

Adaptive control is also useful for industrial process control. Since delay and holdup times depend on production, it is desirable to retune the regulators when there is a change in production. Adaptive control can also be used to compensate for changes due to aging and wear. See Process control

References in periodicals archive ?
2001), Model Free Adaptive Control-New Technique for Adaptive Control Addresses a Variety of Technical Challenges, Control Engineering Europe, March 2001.
The new Adaptive Control technology complements the company's recently announced Data Center Assessment and Optimization Services.
Seem, who also researches automatic tuning, fault detection and control of HVAC equipment in commercial buildings, has been spearheading nine years of adaptive control research and technology testing for Johnson Controls.
He has been an Editorial board member on several journals including, the International Journal of Adaptive Control and Signal Processing and the Journal of Systems and Control Engineering.
PCI is currently using 18 OptiMil adaptive control systems to produce molds and dies for automobiles at production facilities in France.
The main idea of our work is to connect both mentioned approaches and design the adaptive control system which is able to distinguish which control algorithm will produce better solution and should be connected to the plant.
Adaptive control units measure the cutting load directly from the spindle, while precise system calculations adjust feedrates to compensate for load variations.
Lenders must consider the full scope of the customer relationship plus the latest developments in adaptive control, analytics and service oriented architecture as they align their collection platforms to this decade's business requirements.
The main result of this work can be found in usability of the theoretically well described LQ adaptive control to the real system.
2] adaptive control software and operates on a Windows NT platform.
Except for historical information contained herein, the statements contained in this press release that relate to Fair Isaac, including statements regarding its TRIAD adaptive control system, are forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995.
In adaptive control the linear models are usually get by LS of RLS or as in this article via method based on NN (Nelles, 2001).

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