What is Adaptive Control? Adaptive control is a field of control theory, that deals with time varying systems. It deals with systems that have their parameters change in run time. An example of this is when you control temperature of oven in morning and at night (if you describe this system using transfer function technique, you will find that the parameters of transfer function that describe this system will differ from morning to night). Adaptive control was used for the fist time in fifties in the last century , when they used in controlling fighter aircraft, but the first try failed and the science of adaptive control became just a theory that has many doubts that it can have any practical applications. In seventies , scientists like astrom and wittenmark tried to prove again the importance of such field and its ability to control time varying systems, and they could prove this eventually. Currently techniques of adaptive control (like gain scheduling for example) is used successfully in fighter aircrafts . Adaptive control depends on retuning parameters of the controller to keep the error (deviation between reference input and output) to be minimum and in the same time to make the criteria (like rise time , settling time, overshoot, etc..) to be the same, even if the system changes. In other words, adaptive controllers adapt themselves according to the behavior of the system. There are many techniques used in adaptive control , like gain scheduling, model reference, direct self-tuning regulators, indirect self-tuning regulators, etc... I attended the adaptive control course in Cairo university , and it was a nightmare in fact! really very difficult (and very rich in the same time). I hope in the near future to prepare an applied course for those who are interested in this field, en sha ALLAH
Posted on: Sun, 18 Jan 2015 22:30:53 +0000
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