ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Adjustment Optimal Trajectory Planning of Aircraft Component Based on Dynamics Model
Received date: 2013-11-24
Revised date: 2013-12-15
Online published: 2014-02-21
Supported by
National Natural Science Foundation of China (51375442); National Key Technology Research and Development Program of China (2011BAF13B12)
To improve the safety and reduce the impact on the sensitive direction in an aircraft component trajectory adjustment system, the trajectory of a large component is optimized by a dynamics model of the adjustment system. This model is derived by the Newton-Euler method, and takes into account the rod deformation, screw movement error and deformation in the NC locator. It can evaluate the kinematic characteristics of the component with different movement trajectories. In order to improve the efficiency and reduce the amount of computation in the optimization process, an adaptive kernel principal component analysis algorithm with optimal separability between classes is proposed in combination with pattern recognition methods to predict the performance of feasible trajectories to control the scope of the search. The effectiveness of the proposed method is verified by an example of an adjustment system. After evaluation of 150 feasible trajectories, the maximum translational velocity of the large component during the adjustment process is less than 20 mm/s, and the maximum angular velocity at the end of the adjustment process is less than 0.1 rad/s.
HUANG Peng , WANG Qing , LI Jiangxiong , KE Yinglin , ZHANG Chunshan . Adjustment Optimal Trajectory Planning of Aircraft Component Based on Dynamics Model[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(9) : 2672 -2682 . DOI: 10.7527/S1000-6893.2013.0525
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