多分辨随机振动控制算法  

RANDOM VIBRATION CONTROL WITH MULTIRESOLUTION

作　　者：沈国重[1] 路甬祥[2] 

机构地区：[1]浙江大学机械电子控制工程研究所,杭州310027 [2]中国科学院

出　　处：《机械工程学报》2001年第10期14-18,30,共6页Journal of Mechanical Engineering

基　　金：美国DACTRON公司赞助。

摘　　要：针对随机振动控制领域低频控制精度问题，指出多分辨控制是解决问题的关键，从理论上详细论证了随机振动控制的可分解性。然后提出了基于多抽样系统的多分辨控制方案，给出了一种具体实现算法。着重讨论了多分辨控制算法的结构，抽取和 内插的实现和多相优化，相应滤波器设计的参数确定原则，目标谱的分解方法等问题。在Dactron公司的双DSP振动台控制系统上实现了多分辨随机振动控制算法，与原单分辨率控制算法进行了试验对比研究。对比试验的结果充分证明了新算法的有效性和高效性。The poor control accuracy problem engaged in random vibration control,which is put forward many years ago and remains unsettled,is presented,and then a potential solution-multiresolution control scheme is pointed out Random vibration control is theoretically proved to be divisible in detail,and a multiresolution control scheme based on multirate system is proposed and discussed Some important technology involved in the algorithm,like decimation, interpolation and their optimizations using poly-phase decomposition theory, the rule to determine the parameters used to design related digital filters, and the computation scheduling,etc ,are all discussed in great detail At last the algorithm is programmed at Dactron's shaker control platform,and used to control a shaker system The experimentation result shows great improvements in low frequency control property,which gives the most powerful proof to the success of the new algorithm

关 键 词：随机振动控制 多分辨控制 多抽样率系统 多分辨谱估计 DSP 

分 类 号：TB535[理学—物理] O328[理学—声学]