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In this paper we reinvestigate the distributed state observer for a spatially interconnected system composed of many subsystems interacting with each other. Several LMI based conditions are provided which are less conservative than or complement with the existed ones. These conditions utilize effectively the block-diagonal characteristic of system parameters and the sparseness of subsystem connection...
The paper deals with induction motor speed control systems in sensor and sensor-less cases. Firstly, the passivity of the rotor flux error subsystem (in d-q reference frame), and the corresponding passivity-based scheme are respectively shown; secondly, a passivity-based sensorless scheme is presented; at last, a simulation experiment example is also given to illustrate that the excellent tracking...
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