基于泊松过程的超高斯随机振动试验控制技术研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (6) : 19-22,4.

论文

基于泊松过程的超高斯随机振动试验控制技术研究

陈家焱1; 陈章位1; 周建川2; 贺惠农3

作者信息 +

Research on the super-Gaussian random vibration test control based on Poisson process

CHEN Jia-yan1; CHEN Zhang-wei1; ZHOU Jian-chuan2; HE Hui-nong3

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文章历史 +

摘要

针对工程化的超高斯随机振动试验控制技术实现尚存在问题，在对其控制原理研究的基础上，提出基于泊松过程的超高斯随机振动控制策略。利用参考谱设计出符合控制要求的滤波器，通过泊松过程产生泊松点，使泊松点的信号取值服从正态分布，利用该信号与滤波器之间的卷积运算产生用于系统控制的驱动信号，从而实现对超高斯随机振动试验控制系统的功率谱和峭度同时控制，且二者相互独立。仿真与实验结果表明，基于泊松过程的超高斯随机振动试验控制算法，其控制输出响应谱与参考谱的误差满足振动试验工程上±3dB要求，控制峭度也达到很高的精度，完全满足工程要求。

Abstract

To achieve the super-Gaussian random vibration test control in engineering, a super-Gaussian random vibration test control strategy based on the Poisson process is proposed in terms of its control theory. The required filter is designed by taking reference spectrum, the signal value according to Possion points produced in Poisson process obeys to normal distribution, the drive signal acted on control system is generated by using convolution algorithm between signal value and filter, which simultaneously achieves control to the power spectrum and kurtosis of the control system, furthermore, both of them are able to be controlled independently. The simulation and experiment indicate that the error between output response spectrum and reference spectrum based on the proposed control algorithm satisfies the requirement ±3dB in engineering and kurtosis with high control accuracy also conforms to demands in practice.

导出引用

陈家焱;陈章位;周建川;贺惠农. 基于泊松过程的超高斯随机振动试验控制技术研究[J]. 振动与冲击, 2012, 31(6): 19-22,4

CHEN Jia-yan;CHEN Zhang-wei;ZHOU Jian-chuan;HE Hui-nong . Research on the super-Gaussian random vibration test control based on Poisson process[J]. Journal of Vibration and Shock, 2012, 31(6): 19-22,4