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A conveyor belt driven by wound rotor motors produces dynamic tension, velocity and acceleration during starting. The terrible situation (such as resonance) in dynamic analysis and design is that system natural frequencies are equal to those for switching off electric resistances. This paper analyzes and determihnes system natural frequencies based on a modeling method of receptances with the analysis of sub-systems model and of the principle of their addition and conveyor loop closure. It also puts forward to calculate the time interval for switching off electric resistances. The starting of one conveyor is simulated by lumped-mass-spring-model software to further illustrate the influence of time interval for switching off electric resistances on conveyor dynamic behavior. Two methods are also compared. The receptance model is proved to be an excellent alternative. 相似文献
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智能系统多传感器信息融合的复杂性迫切需要开发一套合适的结构体系,目前大多数结构体系都通过融合中心对分散在不同点的多个传感器进行信息处理,而底层传感器之间缺乏必要的联系.这样导致融合中心计算和通信的负担过重而造成瓶颈,且不能使传感器之间互相启发以提高任务环境认知的效率.针对这些问题本文首先提出智能传感器的新概念,指出智能传感器须具备的5个基本能力即预测、规划、刷新、通信和同化,并在此基础上讨论了多智能传感器组成系统时的算法及信息流程.最后以主动视觉和主动触觉共同感知运动物体的位姿为例剖析了这种新思想的具体运用 相似文献
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