关键词: 神经网络, 并联机床, 三坐标测量机, 精度

Abstract: Because the kinematic pair error of Parallel Machine Tool is difficult to be measured directly， this paper designs the measuring system on structure precision for Parallel Machine Tool based on neural network. The maths model based on neural network is established to compensate Parallel Machine Tool errors， and turns nonlinear errors into linear errors to modify the errors which are difficult to establish maths model. Three-coordinate Measure Machine modifies the errors that are easy to establish maths model. The test result indicates that Three-coordinate Measure Machine can modify 90 percent of errors and neural network can modify 1/3~1/2 of surplus errors.

Key words: neural network, parallel machine tool, three-coordinate measure machine, precision