Abstract This study aimed to explore static and dynamic characteristics of double-mode inverter under the control of single current loop. A model was established based on LC filter using grid-connected operation. With output power controlled by single current loop control method, key control parameters were figured out. Based on the simulation model established under Matlab/Simulink environment, favorable static and dynamic characteristics... This study aimed to explore static and dynamic characteristics of double-mode inverter under the control of single current loop. A model was established based on LC filter using grid-connected operation. With output power controlled by single current loop control method, key control parameters were figured out. Based on the simulation model established under Matlab/Simulink environment, favorable static and dynamic characteristics of double-mode inverter controlled by single current loop were verified. Read More Read Less

Abstract In this paper, we propose the new technique adopting power control to MIMO(multi-input multi-output)-OFDM(orthogonal frequency division multiplexing) system with multi-beamformer. Through the proposed technique, we can iteratively control the transmitting power and update the weight of beamformer simultaneously. Therefore, the beam is formed toward the desired direction and the SNIR at each subcarrier become the target SNIR. And the performance of MIMO-OFDM... In this paper, we propose the new technique adopting power control to MIMO(multi-input multi-output)-OFDM(orthogonal frequency division multiplexing) system with multi-beamformer. Through the proposed technique, we can iteratively control the transmitting power and update the weight of beamformer simultaneously. Therefore, the beam is formed toward the desired direction and the SNIR at each subcarrier become the target SNIR. And the performance of MIMO-OFDM system is very improved. The improvement in bit error rate is investigated through computer simulation of a MIMO-OFDM system with the proposed approach. Read More Read Less

Abstract Basketball is a wide range of current popular a kind of sports the school also pay more and more attention to the relevant training for basketball teaching system reform, so the artificial intelligence computer assisted instruction system for basketball training characteristics and performance analysis has become the current physical education in the field of a very important topic. The first... Basketball is a wide range of current popular a kind of sports the school also pay more and more attention to the relevant training for basketball teaching system reform, so the artificial intelligence computer assisted instruction system for basketball training characteristics and performance analysis has become the current physical education in the field of a very important topic. The first basketball game is relatively simple, does not limit the size of the site and the number of players participate in the game. The game is divided into equal number of teams, both were standing on the court, the court judges in the central ball after the team immediately rushed into the ball, and try to throw the ball into the opponent’s basket. Because the peach basket has a bottom. After the ball, in the basket, people have boarded the special ladder to get the ball out from the basket. In this study, the first surveyed the current research status of the subject, have probably understanding of industry development; Then the subject involves the relevant theoretical knowledge and technical methods are analyzed; Then constructed artificial intelligence computer assisted instruction system for basketball training; Finally for the experimental system, and process and the experimental results were analyzed. The final result proves that the system is advanced, research is successful. Read More Read Less