In order to improve the accuracy of vibration control of auto-balancing rotor, four types of auto-balancing rotors were presented in this paper. In addition, lagrange's equation was also adopted to establish a kinetic model for single-raceway baffle-free and a double-raceway baffle auto-balancing rotors under three excitations, the results show it is more effective.

调速型液力偶合器在工业中有很多应用.用户可在多种工作转速下使用液力偶合器来实现其生产生活.以YOTsj560水介质调速型液力偶合器为研究对象,运用ANSYS对该类型的液力偶合器的泵轮进行模态分析,得到了其四阶固有频率,分别为ω1=73.242 Hz,ω2=73.242 Hz,ω3=73.242 Hz,ω4=73.242 Hz,用户在使用该型号液力偶合器时必须避开这几阶共振区.

分析了转子不平衡的原因、偏心量的类型、常规平衡法和自动平衡法的原理、特点与适用场合;提出了快速、及时地平衡动态变化的偏心量的解决方案.

Based on putting forward the concept of rotating machinery self-synchronization motion and testing its automatic balancing function through experiment,this paper detects the rotating machinery self-synchronization motion mechanism and the parameter influencing disciplinarian of rolling friction coefficient, viscous damping coefficient and acceleration.

The small and unstable throughput is one of main aspects to limit the development of wireless local area networks.This paper proposes a kind of throughput optimization model by the Markov chain theory and designs series of throughput optimization arithmetic based on analyzing the mechanism of affecting the attribute of wireless local area networks throughput.The new throughput optimization algorithm adopts the measures of dynamic adjusting competition window value,mends the length of data frame and improves the strategy of retreat time.The simulation result by NS2 indicates that it can enhance the performance of wireless local area networks throughput effectively.

设计了装备制造业可持续发展综合评价模型,构造出综合评价指标体系,运用模糊综合评判理论和层次分析法建立了指标权重分布和判断矩阵,对综合评价结果进行了应用分析。

Fluctuating load whose main inducement is the vast variety of station density and the large-scale degree surge of data collision is one of the direct reasons to bring low throughput and stability.The authors analyze the data collision avoidance mechanism of wireless local area networks,and then design the treating techniques of overcoming the effects of fluctuating load when they investigate the reasons of causing load fluctuating and the mechanism of effects of fluctuating load for wireless local area networks.Based on constructing the math model and the experimental circumstance,the authors validate the functions of these strategies by simulation whose result is discussed finally.