Modified compensation algorithm of lever-arm effect and flexural deformation for polar shipborne transfer alignment based on improved adaptive Kalman filter
| Autor: | Yingyao Kang, Jianhua Cheng, Dongxue Guan, Tongda Wang, Wei Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Applied Mathematics 020208 electrical & electronic engineering 02 engineering and technology Kalman filter Filter (signal processing) Deformation (meteorology) 01 natural sciences Compensation (engineering) 010309 optics Flexural strength Control theory Robustness (computer science) 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Torque Transfer alignment Instrumentation Engineering (miscellaneous) |
| Zdroj: | Measurement Science and Technology. 28:095101 |
| ISSN: | 1361-6501 0957-0233 |
| DOI: | 10.1088/1361-6501/aa781a |
| Popis: | Due to the lever-arm effect and flexural deformation in the practical application of transfer alignment (TA), the TA performance is decreased. The existing polar TA algorithm only compensates a fixed lever-arm without considering the dynamic lever-arm caused by flexural deformation; traditional non-polar TA algorithms also have some limitations. Thus, the performance of existing compensation algorithms is unsatisfactory. In this paper, a modified compensation algorithm of the lever-arm effect and flexural deformation is proposed to promote the accuracy and speed of the polar TA. On the basis of a dynamic lever-arm model and a noise compensation method for flexural deformation, polar TA equations are derived in grid frames. Based on the velocity-plus-attitude matching method, the filter models of polar TA are designed. An adaptive Kalman filter (AKF) is improved to promote the robustness and accuracy of the system, and then applied to the estimation of the misalignment angles. Simulation and experiment results have demonstrated that the modified compensation algorithm based on the improved AKF for polar TA can effectively compensate the lever-arm effect and flexural deformation, and then improve the accuracy and speed of TA in the polar region. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|