适用于梯级泵站压力管道的传感器优化布置方法

发布时间：2018-10-10 09:57

【摘要】：为解决梯级泵站压力管道传感器优化布置问题,提出一种基于有效独立-总位移法的传感器优化布置方法。该方法针对有效独立法所选测点能量较小的缺陷,将测点的总位移以权重的方式加入传感器优化过程中,并保留有效独立法的优点,最终得到独立性较好且满足能量要求的测点。以景泰压力管道为例,运用该方法进行传感器优化布置,并与传统有效独立法比较,通过模态置信准则、Fisher信息矩阵值、最大奇异值比以及总位移等指标评价2种方法的优劣。结果表明,有效独立-总位移法得到的测点在满足独立性的前提下,增加了测点信息量,可观性更好。优化前后实测数据的比较分析,表明该方案对实际结构检测具有较好的适用性,是一种实用有效的传感器优化布置方法。
[Abstract]:In order to solve the problem of optimal layout of pressure pipeline sensors in cascade pumping stations, a new method based on effective independent-total displacement method is proposed. Aiming at the defect of low energy of the measuring point selected by the effective independent method, the total displacement of the measuring point is added into the sensor optimization process in the way of weight, and the advantages of the effective independent method are retained. Finally, the measurement points which are independent and meet the energy requirements are obtained. Taking Jingtai pressure pipeline as an example, this method is used to optimize the sensor layout. Compared with the traditional effective independent method, the Fisher information matrix value, the maximum singular value ratio and the total displacement of the two methods are evaluated by the modal confidence criterion. The results show that the measured points obtained by the effective independent-total displacement method can increase the amount of information and the observability of the measured points is better than that obtained by the effective independent-total displacement method on the premise of satisfying the independence. The comparison and analysis of the measured data before and after optimization show that the proposed scheme is applicable to the actual structure detection and is a practical and effective method for the optimal layout of sensors.
【作者单位】：华北水利水电大学水利学院;
【基金】：国家自然科学基金(51009066) 河南省科技攻关(142102310122) 河南省高等学校青年骨干教师计划(2012GGJS-101) 华北水利水电大学研究生教育创新计划基金(YK2015-02)
【分类号】：TP212

【共引文献】