Parameter impulse control of chaos in crystal growth process

Chaos occurs in the crystal growth process as an irregular swing phenomenon flexible shaft rotating-lifting (FSRL) system. may lead to failure of mono-silicon production. Therefore, it should be suppressed. Many chaos control methods have been proposed theoretically and some them used applications. For a practical plant displaying harmful chaos, engineers from specific area usually face with challenge identifying suppress using proper method. However, despite existing methods, method for FSRL system is not trivial task. example, seminal by Ott-Grebogi-Yorke (OGY method) requires adjustable parameter, which cannot identified In this work, impulsive being The merits lie in, first, manipulates rotation speed motor, only easily accessible parameter; second, does need state feedback, unavailable system; third, robust against bounded parameter uncertainty, requirement. precept obtained Melnikov Simulation results verify correctness our theoretical analysis effectiveness