Research on straightness error evaluation method based on search algorithm of beetle

In order to improve the accuracy of spatial straightness assessment, a mathematical model of spatial straightness is established. The objective function is solved by using a variable step length beetle search algorithm. It mainly includes the steps of the search and step length of the beetle. The precision of the original search algorithm is not high, and it is easy to fall into the local optimal problem. The variable step length method is designed to enhance the diversity of the algorithm and improve the calculation precision. Finally, the solution is solved and the calculation results are obtained according to the termination criterion. Compared with the results of other methods, this optimization result verifies the feasibility and superiority of this algorithm.