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Multi-motor control system has been increasingly used in the mechanical and electrical drive system. The synchronous control is key need to solve for interrelated multi-motor to ensure their coordination work. Based on analyzing to some existed synchronized control strategies of interrelated multi-motor systems, a novel floating compensation control strategy is put forward in this paper to reduce...
Due to simplify the analysis of control system and have better performance of system, a fully actuated subsystem and an under-actuated subsystem are adopted for the quadrotor UAV model. Firstly, for the fully actuated subsystem, a controller based on fast Terminal Sliding Mode Control (FTSMC) is designed. The relevant states converge to their desired values in a short time. So the state variables...
A practical high-performance waveguide slot array antenna in millimeter wave for monopulse tracking application is presented. At first, a novel compact architecture is developed to lessen the mechanical layers of the array. Several design parameters, including waveguide dimensions, wall thickness and slot width, are chosen to be helpful in dip-brazing process. Then the slot admittance, which taken...
A new design method based on coupled-mode theory for the TM01 radiator with large aperture is proposed in this paper. The input and output diameter is 70mm and 400mm respectively, and the work frequency is 8.5GHz. The structure designed by the conventional method is 1300mm, and the bandwidth in which the preserve efficiency keeps beyond 90% ranges from 3.3GHz to 9GHz, and preserve efficiency is 97%...
This paper presents the measurement results of channel attenuation characteristics of low voltage access network in China. The measurement campaign was performed in typical urban and rural residential areas, which represents the underground cable and the overhead line topologies respectively. Both narrow-band (30-500 kHz) and broad-band (500 kHz-20 MHz) attenuations are investigated. Based on the...
Iterative method based on Eric's work for serpentine mode converter design is established. It makes use of steepest ascent technique to search the local optimum, and jump mechanism can be learned to find the global optimum if necessary. Step size is given and works well during the procedure. Structure control methods can be used to realize some structural characteristics. Three kinds of mode converters...
This paper analyses and designs a kind of wireless power transmission system via coupled magnetic resonances. It introduces the wireless power transmission technology, and expounds the principle of coupled magnetic resonant wireless power transmission technology and its superiority. Then it analyzes the influence of the related parameters such as the transmission distance d and load resistance RL...
The contactless transformer is the core of the Contactless Electrical Energy Transmission (CEET) system, and it forms a loosely coupled system. The transmission performance of contactless transformer is relatively low, but the method of capacitor compensation can change its performance. Using the mutual inductance model of contactless transformer to analyze the circuit structure, we can get different...
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