Equivalent analogy correction parameter tuning method of digital control system

Aiming at pulse transfer function description puzzling the parameters tuning, based on equivalent analogy correction method of digital control system having the characteristics of transforming the transfer function into the equivalent pulse transfer function in digital controller, a uniform formula of lag and lead correction is deduced. Analytic expression of typical units is listed and changing range is dedicated. Program flow chart from the equivalent analogy conversion of lag and head correction is showed, and two group parameters´ relationship is defined. The results indicate that the method has the same advantages of clear concept, definite tuning step, convenient be achieved in computers. It can help scientists and engineers to design and debugging a control system quickly.