Satellite positioning simulation system

A bangbang controller (on off controller), also known as a hysteresis controller, is a feedback controller that switches abruptly between two states. These controllers may be realized in terms of any element that provides hysteresis. They are often used to control a plant that accepts a binary input. With recent development of the space science and technology, higher requirements such as accuracy, robustness and disturbance rejection ability in satellite attitude control system have leaded to the more promising intelligent control methods. In order implement this artificial neural networks are a growing trend. A neural scheme of bang bang controller [1] is efficient in solving satellite orientation problems and also continuous updation of error. In control systems Fuzzy Inference Systems are used for loop control and to obtain desired output.