【摘要】 给出了三自由度并联运动坐标测量机的运动学模型,依据全微分理论,导出测头位置误差与各运动副误差及移动副运动误差之间的相互关系,建立了该坐标测量机的误差模型。用计算机对所建误差模型进行了仿真,讨论了机构参数误差对测量结果的影响,为运动校正和控制奠定了基础。更多还原

【Abstract】 This paper establishes the forward and inverse solutions of its movement model. Based on the theory of the differentiation, the relationship between the input parameter errors, which consist of the position errors of the joints and the kinematics errors of the actuators, and the output errors at the probe of the new CMM is derived, so the error model is obtained. Finally, the influence of the structural parameter errors on the measuring accuracy is analyzed by computer simulation.更多还原