Research on lag compensation network design with phase constraint in two-loop autopilot design by pole assignment

摘要

There is a large close loop steady static error when two-loop autopilot designed by pole assignment. Therefore, it should take a lag compensation network into autopilot, in order that the system stability can be satisfied, we must restrict phase lag of the lag compensation network at crossover frequency. The paper offers a good method that transforms the phase lag restriction to solve nonlinear equation to design a lag compensation network, which can achieve satisfied system stability and substantially predigest the design process. It is demonstrated that this method is very convinced to be used in the lag compensation network engineering design.