CASCADE CONTROL SYSTEM OF OPTICAL FIBER AMPLIFIER

摘要

A cascade control system of an optical fiber amplifier comprises a target setting parameter module, a main controller, at least one controlled module and a secondary controller corresponding to the controlled module. The control system adopts two or more cascade control loops, so the disturbance of entering an auxiliary loop can be overcome in time, and the dynamic characteristics of the system can be improved. The main controller is used for coarse adjustment and overall target control, and the auxiliary controller is used for fine adjustment and rapid convergence for a short-term target, so the control quality of the cascade control system is further improved. By means of the cascade control system, the overall control target can be directly defined, and the impact of some special parameter aging characteristics on the field application is avoided; the two or more control loops are used for the overall control target and applications related to two or more parameters, and therefore, decoupling of the parameters in the control target is achieved through a control structure, vibration caused by real-time reciprocating calculation in the single-loop control is avoided, and the dynamic indicator of the system is improved.