弗德卡曼滤波阶比跟踪解耦新方法

郭瑜;迟毅林

振动与冲击 ›› 2009, Vol. 28 ›› Issue (7) : 90-94.

PDF(259 KB)
PDF(259 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (7) : 90-94.
论文

弗德卡曼滤波阶比跟踪解耦新方法

  • 郭瑜,迟毅林
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NEW DECOUPLING APPROACH FOR VOLD-KALMAN-FILTERING ORDER TRACKING

  • Yu Guo , Yilin Chi
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摘要

摘要:弗德卡曼(Vold-Kalman)滤波阶比跟踪法是目前旋转机械阶比分析中能对阶比耦合干扰进行有效解耦操作的方法。但是传统的弗德卡曼升滤波解耦方法存在计算效率低,在无法充分获得耦合阶比瞬时频率信息时不能使用等不足。本文提出了一种基于独立分量分析技术的弗德卡曼滤波阶比跟踪解耦方法。其先将混合观察信号分解为阶比分量、耦合干扰等不同的独立信号分量,再在此基础上对分离出的阶比分量信号对应独立信号分量进行弗德卡曼滤波阶比跟踪分析,有效解决了传统解耦方法计算效率低,解耦需要干扰信号瞬时频率的不足。文中对弗德卡曼滤波阶比跟踪和独立分量分析的基本原理进行了简要介绍,在此基础上提出了本方法的实现方案。通过仿真试验和实际测试对本方法的有效性进行了评价。

Abstract

Abstract:Vold-Kalman-filtering order tracking (VKF_OT) is famous for its decoupling ability for crossing or close orders. However, the conventional decoupling approach for VKF_OT has two deficiencies in applications. First, it is a time consuming scheme. Second, it becomes invalid when the instantaneous frequencies of coupled order disturbances are unknown. A new approach for the decoupling of crossing orders for VKF_OT is proposed in this paper. It utilizes the independent component analysis (ICA) approach to separate the mixed observed data into the order components corresponding independent component and order-coupled disturbance independent components (ICs). Subsequently, VKF_OT is only applied to the separated order components corresponding independent component. The deficiencies such as the intensive computation and the instantaneous frequency of disturbance signals formation for the conventional decoupling method are avoided. Following the brief instruction on VKF_OT and ICA, the scheme of the proposed approach is presented. Simulations and tests are also introduced to evaluate the validity of the present approach.

关键词

旋转机械 阶比跟踪 解耦 独立分量分析

Key words

Rotating Machinery / Order Tracking / Decoupling / Independent Component Analysis

引用本文

导出引用
郭瑜;迟毅林. 弗德卡曼滤波阶比跟踪解耦新方法[J]. 振动与冲击, 2009, 28(7): 90-94
Yu Guo;Yilin Chi . NEW DECOUPLING APPROACH FOR VOLD-KALMAN-FILTERING ORDER TRACKING[J]. Journal of Vibration and Shock, 2009, 28(7): 90-94

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