|
|
|
| Reduced-Order Observer Design for Systems with Unknown Inputs |
| HAN Dong, ZHU Fang-Lai |
| (School of Electronic and Information Engineering, Tongji University, Shanghai 200092, China) |
|
|
|
|
Abstract This paper is concerned with the problem of estimating the states for a kind of linear systems unknown inputs when the so-called matching condition was not satisfied. Employing the concept of the relative degree of the system, the auxiliary output vector which may satisfy the observer matching condition was constructed. Based on the auxiliary output vector, a reduced-order observer approach was proposed. The high-gain observers were used to estimate auxiliary output vector. Then, instead of auxiliary output vector, by employing its estimation, a reduced-order observer was constructed. The state estimation error is shown to be uniformly and ultimately bounded with respect to a ball whose radius can be adjusted by design parameters. The design method was declared and carried out with an illustrative example of a fiveorder model. The comparison between estimation performance of the sliding observer and reduced-order observer shows that the latter has the same good performance as the former.
|
|
Received: 05 March 2012
Published: 30 November 2012
|
|
|
|
|
|
| [1] |
JIANG Dong-Dong, HONG Fang-Jun, ZHENG Ping. Droplet Oscillations under AC Electrowetting[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(04): 513-518. |
| [2] |
HUANG Xiang-Long, ZHANG Xiao-Jing, BAI Guo-Juan, XU Wu, WANG Hai. Residual Strength Analysis of Thin-Walled Structures with Multiple Site Damage Based on Crack Tip Opening Angle Method[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(04): 519-524. |
| [3] |
LIU Yi-Peng, HU Xue-Yu, CHEN Jia-Luo, WANG Ping-Yang, DU Chao-Hui. Direct Image Correction Algorithm for PIV Measurement of Flowfield within Circular Tube[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(04): 525-532. |
| [4] |
ZHU Han-Hao, PU Sheng-Chun, ZHANG Hai-Gang, LIU Wei, AN Xu-Dong. Verification of the Calculation of Acoustic Field with Typical Bottom Based on Parabolic Equation in Scaled Tank Experiment[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(04): 532-537. |
| [5] |
YANG Jing-Jing-1, LIU Yong-Sheng-1, FANG Wen-Jian-1, FANG Jin-1, PENG Lin-1, YANG Zheng-Long-2, GAO Tian-1, GU Min-An-1. Design and Efficiency of Photovoltaic-Thermoelectric Power Generator with Negative Feedback Characteristic[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(04): 550-554. |
| [6] |
LIU Chen-Yan-1, 2 , PAN Li-1, 2 , ZI Xiao-Chao-2. A Binary-String-Set-Based Algebraic Framework for Policy Composition[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(04): 579-583. |
| [7] |
PENG Yan-Bin-1, ZHENG Zhi-Jun-1, YU Cheng-Bo-2, LI Ji-Ming-3. Automated Negotiation Decision Model Based on Classifier Fusion[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(04): 644-649. |
| [8] |
NING Xiao-Lin-1, ZHAO Yi-Fei-2, CHEN Fei-儿1. Index System and Prosperity Indices of Global Shipping Industry and Applied Research[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(03): 417-422. |
| [9] |
KONG Xiang-Qiang-1, LIN Lin-1, LI Ying-1, ZHANG Dong-2, YANG Qian-Ming-1. Effect of Refrigerant Charge on the Performance of a Direct Expansion Solar Assisted Heat Pump Water Heater Using R410A[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(03): 370-375. |
| [10] |
HUANG Kang, 欧Yang-Guang-Yao , AN Shi-Jie, CHANG Han-Bao. Design and Simulation Research on Double-Staggered Arranged Porous Nozzle[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(03): 434-437. |
| [11] |
WANG Lei, GU Meng-Di. Optimal Reinsurance-Investment Strategies in a Mean-Reverting Market[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(03): 438-443. |
| [12] |
XIONG Hao, YAN Hui-Li, ZHOU He-Ping, LIU Wu-Sheng. Real-Time Optimization Strategy of the Multi-Period Dynamic Vehicle Routing Problems[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(03): 450-453. |
| [13] |
HONG Jiang-Tao-1, YANG Xiao-Yan-1, CHEN Jun-Fang-2. An Empirical Research on the Relationship among Knowledge Management, Knowledge Competence and Core Competence[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(03): 444-449. |
| [14] |
LI Bin-a, JI Jian-Hua-a, b , LI Guo-Wei-a. Study on Supply Chain Robustness Index Mode Considering Profits and Risks[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(03): 484-488. |
| [15] |
XU Shi-Yin, HUANG Xiu-Chang, HUA Hong-Xing. Study on the Band Structure of Hexagonal Chiral Structures[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(02): 167-172. |
|
|
|
|
