|Table of Contents|

H2/H∞ control for stepless amplitude modulation of vibratory roller(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年03期
Page:
87-92
Research Field:
Publishing date:
2010-06-20

Info

Title:
H2/H∞ control for stepless amplitude modulation of vibratory roller
Author(s):
ZHAO Tie-shuan;  JIAO Sheng-gjie;  YE Min
Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
mechanical engineering;  vibratory roller;  stepless amplitude modulation;  optimal control;  robust control;  H2/H∞ control
PACS:
U415.521; TP273
DOI:
-
Abstract:
To decrease hydraulic pressure vibration and improve compacting quality of road, during amplitude modulation of vibratory roller, aiming at large time-delay and strong nonlinear characteristics, H2/H∞ hybrid controller is designed to ensure both the system performance and the robust stability, by considering the merit and defect of H2 optimal control and H∞ robust control. The H∞ norm of the sensitive function from the parameter perturbation of the hydraulic system to the hydraulic pressure is taken as the evaluating index of the robustness, and the H2 norm of the transfer function from the external torque disturbance to the vibrating accelerate velocity as the index of LQG(linear quadratic Gaussian). Based on the dynamic model of the system, the controller is designed by Matlab/LMI block. By the AMEsim software, the simulation model is presented. The comprehensive simulations are carried out. The result showed that the response time of vibratory accelerates is 3 s, and there is no stable error under the proposed control method. The maximum impulse of the hydraulic system is 2 MPa, and there is no pressure fluctuation during the adjust process. The robust control is superior to PI control at celerity, accuracy and stability. 7 figs, 10 refs.

References:

[1] 李 冰,焦生杰.振动压路机与振动压实技术[M].北京:人民交通出版社,2001.
[2]张红春,戴经梁,李小重.智能冲击压路机路基压实度自动检测方法[J].交通运输工程学报,2007,7(5):63-67. ZHANG Hong-chun,DAI Jing-liang,LI Xiao-zhong.Compactness automatic detecting method of subgrade for intelligent impact roller[J].Journal of Traffic and Transportation Engineering,2007,7(5):63-67.
[3]吴仁智.振动压路机液压系统动态分析及功率计算方法的研究[D].西安:西安公路学院,1989.
[4]沙庆林.公路压实与压实标准[M].北京:人民交通出版社,1998.
[5]Doyle C J,Glover K.State space solution to standard H2 and H∞ control problems[J].IEEE Transactions on Automatic Control,1989,34(8):831-847.
[6]Glover K,Mcfarlane D.Robust stabilization of normalized coprime factor plant descriptions with H∞ bounded uncertainty[J].IEEE Transactions on Automatic Control,1989,34(8):821-830.
[7]Chen B S,Tseng C S,Uang H J.Mixed H2/H∞ fuzzy output feedback control design for nonlinear dynamic systems:a LMI approach[J].IEEE Transaction on Fuzzy Systems,2000,8(3):249-264.
[8]谢亚青.基于MATLAB的智能振动压路机无级调幅液压系统的建模与仿真[J].机床与液压,2009,37(9):256-258. XIE Ya-qin.Modeling and simulation of infinite variable amplitude adjustment hydraulic system of intelligent vibratory roller based on MATLAB[J].Machine Tool & Hydraulics,2009,37(9):256-258.
[9]洪鲁宾.智能化振动压路机调幅控制系统的设计[J].建筑机械,2006,27(5):78-80. HONG Lu-bin.Amplitude control system design of vibratory roller with intellectual faculties[J].Construction Machinery,2006,27(5):78-80.
[10]钟春彬,冯忠绪,朱伟敏.双频双幅合成振动压实的动力学仿真[J].长安大学学报:自然科学版,2009,29(1):99-102. ZHONG Chun-bin,FENG Zhong-xu,ZHU Wei-min.Dynamic simulation of double-frequency and double-amplitude composed vibrating compaction[J].Journal of Chang'an University:Natural Science Edition,2009,29(1):99-102.

Memo

Memo:
-
Last Update: 2010-06-20