With the progress and development of society, people's living standards improve, the research of a variety of indoor service robot is more and more concerned. On the basis of technical research and development of indoor service robot positioning technology in recent year, this paper design of an indoor service robot system based on ZigBee positioning technology. The system used ARM9 microprocessor as control core, equipped with motor drive module, sensor module, ZigBee positioning module and power module, via corresponding software design, to complete stable walking, environmental monitoring, grasbing objects and so on. Experimental results show that the robot system is running well, and can be used in homes, supermarkets, museums and other indoor environments.
Light-emitting diodes with optoelectronic feedback loop display complex sequences of periodic mixed mode oscillations and chaotic spiking. In this paper, we propose an adaptive control scheme for the stabilization of this complex dynamics, which is based on LaSalle invariant principle. The controller can asymptotically stabilize unstable equilibrium points of dynamical systems without explicit knowledge of the desired steady-state position. The simulation results demonstrate the effectiveness of the proposed control scheme.
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