The deÞning characteristic of a networked control system (NCS) is having a feedback loop that passes through a local area computer network. Our two-step design approach includes using standard control methodologies and choosing the network protocol and bandwidth in order to ensure important closed-loop properties are preserved when a computer network is inserted into the feedback loop. For sufficiently high data rates, global exponential stability is preserved. Simulations are included to demonstrate the theoretical result.

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The problem of generating the trajectory for high-rise/ high-speed elevators is investigated in this paper. Several approaches are used: open loop optimal control, closed loop optimal control and heuristic search optimization algorithms. Each approach is accompanied by numerical simulations.