Power electronics products are widely used in industrial control, requirements of power quality have become more sophisticated. So how to improve voltage quality and how to ensure that the system is stable is an impor...
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Micro-Grid is a small system consisting of micro-power source and the load, which provide electricity and heat for the user. Micro-grid concept proposed mainly to solve large-scale, distributed power and network diver...
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Power storage technology serves to cut the peak and fill valley, regulate the power frequency, improve the stability, and raise the utilization coefficient of the grid in the power system. This paper introduces variou...
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Smart Grid is the newest direction of electric power development, and is regarded as the significant technology innovation and development trend of the electric power system in 21st century. It is also regarded as the...
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This paper deals with the robust adaptive fault-tolerant compensation control problem for steering subsystem of unmanned underwater vehicles(UUVs) with actuator time-varying faults, disturbances and parameter uncertai...
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ISBN:
(纸本)9781467374439
This paper deals with the robust adaptive fault-tolerant compensation control problem for steering subsystem of unmanned underwater vehicles(UUVs) with actuator time-varying faults, disturbances and parameter uncertainties. A sufficient condition for the existence of reduced-order sliding mode dynamics is derived in the case of actuator faults, and an explicit parametrization of the desired sliding surface is also given. Without the need for a fault detection and isolation(FDI) mechanism, an adaptive sliding mode controller is developed based on the online estimation of an eventual fault to maintain the sliding mode, where the gain of the nonlinear unit vector term is updated automatically to compensate the effects of actuator faults and exogenous disturbances. The simulation demonstrates the effectiveness of the proposed design method.
The scaling and corrosion of circulating cooling water have been a major concern in industry circulating cooling water system, severely affecting the production operation of the circulating cooling water system. In th...
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Global path planning is quoted in this paper. The stoical and global environment has been given to us, which is abstracted with grid method before we build the workspace model of the robot. With the adoption of the an...
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The design method of a universal program for the computer graphics of turbine blade section with the known sizes is introduced in this paper. In order to get the smooth graphics, the mathematics models for obtaining t...
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This paper studies the distributed non-fragile H ∞ consensus problems for linear multi-agent systems with external disturbances and unknown initial disturbances under switching weighted balanced directed topologies....
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ISBN:
(纸本)9781479999378
This paper studies the distributed non-fragile H ∞ consensus problems for linear multi-agent systems with external disturbances and unknown initial disturbances under switching weighted balanced directed topologies. The designed controllers are insensitive to multiplicative controller coefficient variations. Sufficient conditions for the existence of the proposed control strategy are also obtained by using linear matrix inequality (LMI) technique. It is worth mentioning that instead of requiring the coupling strength among neighboring agents to be larger than a threshold value as in previous literature, the coupling strength in this paper can be determined by solving some LMIs. Finally, a numerical example is presented to show the effectiveness of the proposed method.
Panoramic stereo spherical vision system can simultaneously realize panoramic stitching and three-dimensional ranging. Its multi-channel image acquisition system is located in 3D space through the mechanical encapsula...
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ISBN:
(纸本)9781479970995
Panoramic stereo spherical vision system can simultaneously realize panoramic stitching and three-dimensional ranging. Its multi-channel image acquisition system is located in 3D space through the mechanical encapsulation. In this paper, an effective calibration method is explored to solve the problem of slight errors generated by the encapsulation structure installation and manufacturing. More importantly, the errors are difficult to measure, which leads the optical axes of lenses are not parallel. This paper uses a fine-tuning method of focused laser spot detection to solve the problem by analyzing the encapsulation structure and imaging model of the system. And its image processing algorithms and calibration process are described. The final experimental results confirm it is indeed feasible to this method.
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