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有源结构声传人控制的研究进展
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作者 邱小军 沙家正 《物理学进展》 CSCD 北大核心 1996年第3期533-543,共11页
用有源振动控制板振动,从而对通过板向闭空间传入的声进行控制已有了一些研究,一般是对单频噪声进行前馈控制。但在一些情况下,如对随机振动噪声控制时,前馈控制难应用。在介绍有源结构声传入控制研究进展的基础上,本文用反馈控制方法... 用有源振动控制板振动,从而对通过板向闭空间传入的声进行控制已有了一些研究,一般是对单频噪声进行前馈控制。但在一些情况下,如对随机振动噪声控制时,前馈控制难应用。在介绍有源结构声传入控制研究进展的基础上,本文用反馈控制方法对无规入射声场通过板向闭空间的传入进行了控制。理论和实验均表明反馈控制方法是有效的。对所研究的板/闭空间耦合系统,在单频情况下调好的反馈控制对其相应的1/30ct内的白噪声亦有控制效果,而在单频情况下调好的前馈控制状态不适用于对宽带噪声控制。 展开更多
关键词 声传入控制 有源结构 衰减
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A mobile self-reconfigurable robot based on modularity 被引量:2
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作者 钟鸣 《High Technology Letters》 EI CAS 2009年第1期26-31,共6页
A novel mobile self-reconfigurable robot is presented. This robot consists of several independent units. Each unit is composed of modular components including ultrasonic sensor, camera, communication, computation, and... A novel mobile self-reconfigurable robot is presented. This robot consists of several independent units. Each unit is composed of modular components including ultrasonic sensor, camera, communication, computation, and mobility parts, and is capable of simple self-reconfiguring to enhance its mobility by expanding itself. Several units can not only link into a train or other shapes autonomously via camera and sensors to be a united whole robot for obstacle clearing, but also disjoin to be separate units under control after missions. To achieve small overall size, compact mechanical structures are adopted in modular components design, and a miniature advanced RISC machines (ARM) based embedded controller is developed for minimal power consumption and efficient global control. The docking experiment between two units has also been implemented. 展开更多
关键词 self-reconfigurable robot MOBILITY MODULARITY DOCKING
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