On the basis of analysis on integral saturation in cascade control systems

two anti-saturation approaches were put forward

one was modifying the anti-saturation method of the slave controller

and the other was changing the lockout condition of the master controller.Simulation on the two ways above was carried out by Matlab.The result showed that changing the lockout condition of the master controller did not only avoid the saturation of the master controller in cascade control system effectively

but also can ensure the rapid adjustment of the slave controller.