Decentralized sampled-data control of interconnected systems using low gain and high gain output feedback

In practice, it is common that the interconnected subsystems of a large-scale system are controlled by decentralized sampled-data stabilizers. In this case, the problem of using sampled-data output feedback to design global a decentralized stabilizer for the large-scale systems is quite challenging. To solve the problem, in this paper we propose a gain domination method that implements both low- and high- gains to negate the effects of nonlinearities found in a series of interconnected systems. The decentralized stabilizers with low gain and high gain are implemented using sampled-data output feedbacks.