Control system includes both the hardware oriented lowend controllers, such as servo controllers and pressure regulators, and the software oriented high-end controllers, such as command schedulers and motion coordinators. AD will not replace a specific design domain knowledge, such as how to design a PID controller or a signal filter. However, concerning the fact that nowadays the majority of controllers and signal processors are implemented in software with appropriate I/O devices, AD will address the issue of how to realize the designed controller and how to place and structure the individual controllers to ensure the convenience in use and the functional independence. The structuring should provide the abstraction and the independence of the system components. AD is also effective in designing a pure software system [5].