Algorithm for Simulator’s Road Spectrum Signal
In response to the impossibility of directly using data of the actual road show experiment to the motion simulation of simulators, due to the limited work space of simulators, this paper begins with an attempt to extract the main frequency components of original signals by spectrum analysis and allow the input signal to meet performance requirements by adjusting the phase offset corresponding to the various frequency components. The paper proceeds with the regeneration of the signals capable of reflecting the motion characteristics of the original data and meeting the performance requirements of motion simulators by selecting these phase offsets as the design variables, selecting simulator’s displacement, velocity, and acceleration as the optimization objectives and applying Genetic Algorithm toolbox of Matlab to develop the optimization model. The paper ends with the efforts to check mechanism singularity by calculating the Jacobian matrix condition number of the regenerating signals and thus obtain the regenerating signals compatible with the work space, capable of fulfilling the performance requirements of motion simulators and free of continuous region singularity.
Hun Guo, Zuo Dunwen, Hongli Xu, Chun Su, Chunjie Liu and Weidong Jin
Z. M. Zhao et al., "Algorithm for Simulator’s Road Spectrum Signal", Key Engineering Materials, Vol. 458, pp. 237-245, 2011