APPLICATION OF FRF ESTIMATOR BASED ON ERRORS-IN-VARIABLES MODEL IN MULTI-INPUT MULTI-OUTPUT VIBRATION CONTROL SYSTEM
APPLICATION OF FRF ESTIMATOR BASED ON ERRORS-IN-VARIABLES MODEL IN MULTI-INPUT MULTI-OUTPUT VIBRATION CONTROL SYSTEM
摘要
The FRF estimator based on the errors-in-variables (EV) model of multi-input multi-output (MIMO) system is presented to reduce the bias error of FRF HI estimator. The FRF HI estimator is influenced by the noises in the inputs of the system and generates an under-estimation of the true FRF. The FRF estimator based on the EV model takes into account the errors in both the inputs and outputs of the system and would lead to more accurate FRF estimation. The FRF estimator based on the EV model is applied to the waveform replication on the 6-DOF (degree-of-freedom) hydraulic vibration table. The result shows that it is favorable to improve the control precision of the MIMO vibration control system.
The FRF estimator based on the errors-in-variables (EV) model of multi-input multi-output (MIMO) system is presented to reduce the bias error of FRF HI estimator. The FRF HI estimator is influenced by the noises in the inputs of the system and generates an under-estimation of the true FRF. The FRF estimator based on the EV model takes into account the errors in both the inputs and outputs of the system and would lead to more accurate FRF estimation. The FRF estimator based on the EV model is applied to the waveform replication on the 6-DOF (degree-of-freedom) hydraulic vibration table. The result shows that it is favorable to improve the control precision of the MIMO vibration control system.
基金
This project is supported by Program for New Century Excellent Talents in University,China(No.NCET-04-0325).
参考文献10
-
1FISHER D K, POSEHN M R. Digital control system for a multipie-actuator shaker[C]//47th Shock and Vibration Bulletin, NM, Albuquerque, 1977: 79-96.
-
2SMALLWOOD D O. Random vibration testing of a single test item with a multiple input control system[C]//Proceedings of the Institute of Environmental Sciences' 28th Annual Technical Meeting, USA, Dallas, TX, 1982: 42-49.
-
3STROUD R C, HAMMA G A. Multiexciter and multiaxis vibration exciter control systems[J]. Sound and Vibration, 1988, 22(4): 18-28.
-
4UNDERWOOD M A. Adaptive control method for multiexciter sine tests: United States, 5299459[P]. 1994-04-05.
-
5UNDERWOOD M A. Multi-exciter testing applications: theory and practice[C]// Proceedings-Institute of Environmental Sciences and Technology, Anaheim, CA, 2002: 1-10.
-
6PEETERS B, DEBILIE J. Multi-axial random vibration testing: a 6 degrees-of-freedom test case[C]//Proceedings of the 21st Aerospace Testing Seminar, Manhattan Beach, CA, USA, 2003: 47-62.
-
7STROUD R C, HAMMA G A, UNDERWOOD M A, et al. A review of multiaxis/multiexciter vibration technology[J]. Sound and Vibration, 1996, 30(4): 20-27.
-
8UNDERWOOD M A, KELLER T. Recent system developments for multi-actuator vibration control[J]. Sound and Vibration, 2001, 246(4): 2-8
-
9PATRICK G, RIK P, JOHAN S. Nonparametric frequency response function estimators based on nonlinear averaging techniques[J]. IEEE Transactions on Instrumentation and Measurement, 1992, 41(6): 739-746.
-
10UNDERWOOD M A. Jaguar systems on-line operating manuals[M]. San Jose, CA: Spectral Dynamics Inc., 2003.
-
1数字[J].通讯世界,2012(7):10-11.
-
2段世忠,周荫清.复包络数字滤波器的最大似然辨识建模[J].遥测遥控,2001,22(6):19-25.
-
3周燕萍.LTE中天线传输模式研究——TM38技术优化[J].数字技术与应用,2016,34(8):40-41.
-
4全球移动广告营收大幅增长[J].通讯世界,2013(7):4-4.
-
5李颖,王欣,魏急波.一种复数球形译码算法的仿真[J].系统仿真学报,2006,18(10):2980-2983. 被引量:4
-
6孙祥祥,祝龙,叶晓亮.室外MIMO无线信道模型及其性能预测[J].文艺生活(中旬刊),2011(4):258-258.
-
7李晓辉,易克初,刘乃安,杜晨光.一种MIMO系统中的新型资源分配算法[J].电路与系统学报,2006,11(5):84-87. 被引量:6
-
8数字[J].通讯世界,2012(10):12-13.
-
9李蓉艳,杨坤德,邹士新.多输入多输出浅海水声信道响应的盲估计[J].同济大学学报(自然科学版),2007,35(5):664-668. 被引量:1
-
10华为获得IETF标准组织IAB与AD职位[J].电信网技术,2010(4):15-15.