四轮定位台标定架三坐标测量分析 一、建立坐标水平面为z轴、前后中心线为Y轴，左右中心线为X轴，如图所示：俯视图 正面图 二、测量各点到坐标轴的距离1、取三角面上任意3个坐标点，并分别测量3坐标点到与三角面平行轴（Y轴）的距离2、取与Z轴平行的三角边上任意2个坐标点，并且分别测出2坐标点到Z轴距离3、取与X轴平行的三角边上任意2个坐标点，并且分别测出2坐标点到X轴距离4、标定架共4个面，分别用来对四轮定位台4个转鼓位置的激光传感器进行标定，每个转鼓位置有3个激光传感器，对应标定架上的3个三角面即4个面一共12个三角面，测量时每个三角面取7个点（即1、2、3条款） 数据分析(标定架左后)标定架三角面坐标点坐标轴测量值（mm）第二次测量公差（0.002英寸）mm标准值mm偏差mm超差mm第二次测量偏差1p1Y-841.0347 -840.8294 0.0508-841.3750.3403 0.2895 0.5456 p2Y-840.9672 -840.6351 0.0508-841.3750.4078 0.3570 0.7399 p3Y-840.9799 -841.0215 0.0508-841.3750.3951 0.3443 0.3535 p4X288.9999 289.0153 0.0508289.2298-0.2299 -0.2807 -0.2145 p5X288.7666 288.9783 0.0508289.2298-0.4632 -0.5140 -0.2515 p6Z237.5134 237.6349 0.0508225.475812.0376 11.9868 12.1591 p7Z237.6461 237.4281 0.0508225.475812.1703 12.1195 11.9523 2u1Y-841.3657 -841.1890 0.0508-841.3750.0093 -0.0415 0.1860 u2Y-841.3288 -841.6751 0.0508-841.3750.0462 -0.0046 -0.3001 u3Y-841.2772 -841.2706 0.0508-841.3750.0978 0.0470 0.1044 u4Z619.5575 619.8402 0.0508606.729812.8277 12.7769 13.1104 u5Z619.3613 619.3708 0.0508606.729812.6315 12.5807 12.6410 u6X76.3233 76.5670 0.050876.14920.1741 0.1233 0.4178 u7X76.1231 76.4231 0.050876.1492-0.0261 -0.0769 0.2739 3q1Y-841.2339 -841.3270 0.0508-841.3750.1411 0.0903 0.0480 q2Y-841.1293 -841.3891 0.0508-841.3750.2457 0.1949 -0.0141 q3Y-841.1113 -841.2653 0.0508-841.3750.2637 0.2129 0.1097 q4X-289.5340 -289.8546 0.0508-289.2298-0.3042 -0.3550 -0.6248 q5X-289.7431 -289.4236 0.0508-289.2298-0.5133 -0.5641 -0.1938 q6Z238.7636 238.8940 0.0508225.475813.2878 13.2370 13.4182 q7Z238.6172 238.9726 0.0508225.475813.1414 13.0906 13.4968 标定架三角面坐标点坐标轴测量值（mm）第二次测量公差（0.002英寸）mm标准值mm偏差mm超差mm第二次测量偏差4 2p1Y-841.9788 -841.6743 0.0508-841.375-0.6038 -0.6546 -0.2993 2p2Y-841.9538 -841.3891 0.0508-841.375-0.5788 -0.6296 -0.0141 2p3Y-841.9619 -841.9826 0.0508-841.375-0.5869 -0.6377 -0.6076 2p4X-2505.2211 -2504.9816 0.0508-2504.7702-0.4509 -0.5017 -0.2114 2p5X-2504.9478 -2504.3658 0.0508-2504.7702-0.1776 -0.2284 0.4044 2p6Z238.9706 238.4790 0.0508225.475813.4948 13.4440 13.0032 2p7Z238.8530 238.5620 0.0508225.475813.3772 13.3264 13.0862 5 2u1Y-842.2125 -841.9741 0.0508-841.375-0.8375 -0.8883 -0.5991 2u2Y-842.1712 -842.0762 0.0508-841.375-0.7962 -0.8470 -0.7012 2u3Y-842.1416 -842.2843 0.0508-841.375-0.7666 -0.8174 -0.9093 2u4Z619.3902 619.1137 0.0508606.729812.6604 12.6096 12.3839 2u5Z619.6347 619.2859 0.0508606.729812.9049 12.8541 12.5561 2u6X-2718.9022 -2718.4236 0.0508-2717.8508-1.0514 -1.1022 -0.5728 2u7X-2718.7959 -2718.8641 0.0508-2717.8508-0.9451 -0.9959 -1.0133 6 2q1Y-842.1880 -842.1760 0.0508-841.375-0.8130 -0.8638 -0.8010 2q2Y-842.1439 -841.6971 0.0508-841.375-0.7689 -0.8197 -0.3221 2q3Y-842.1227 -841.5679 0.0508-841.375-0.7477 -0.7985 -0.1929 2q4X-3083.6217 -3083.5128 0.0508-3083.2298-0.3919 -0.4427 -0.2830 2q5X-3083.3748 -3083.3699 0.0508-3083.2298-0.1450 -0.1958 -0.1401 2q6Z237.6347 237.5910 0.0508225.475812.1589 12.1081 12.1152 2q7Z237.8150 237.6918 0.0508225.475812.3392 12.2884 12.2160 数据分析(标定架左前) 标定架三角面坐标点坐标轴测量值（mm）第二次测量值公差（0.002英寸）mm标准值mm偏差mm超差mm第二次测量偏差7pr1Y839.9539840.57610.0508841.375-1.4211 -1.4719 -0.7989 pr2Y841.7735841.66820.0508841.3750.3985 0.3477 0.2932 pr3Y841.7351841.53410.0508841.3750.3601 0.3093 0.1591 pr4X288.6357289.04510.0508289.2298-0.5941 -0.6449 -0.1847 pr5X288.5146288.74350.0508289.2298-0.7152 -0.7660 -0.4863 pr6Z238.1098238.33460.0508225.475812.6340 12.5832 12.8588 pr7Z238.2352238.47260.0508225.475812.7594 12.7086 12.9968 8ur1Y841.5789841.62780.0508841.3750.2039 0.1531 0.2528 ur2Y841.5208841.36910.0508841.3750.1458 0.0950 -0.0059 ur3Y841.5353841.52860.0508841.3750.1603 0.1095 0.1536 ur4Z619.7828619.74260.0508606.729813.0530 13.0022 13.0128 ur5Z620.0281619.77280.0508606.729813.2983 13.2475 13.0430 ur6X-76.5141-76.52740.0508-76.1492-0.3649 -0.4157 -0.3782 ur7X未测量-76.2410.0508-76.1492 -0.0918 9qr1Y841.5344841.5610.0508841.3750.1594 0.1086 0.1860 qr2Y841.5671841.28610.0508841.3750.1921 0.1413 -0.0889 qr3Y841.576841.33570.0508841.3750.2010 0.1502 -0.0393 qr4X-289.728-289.88630.0508-289.2298-0.4984 -0.5492 -0.6565 qr5X-289.887-289.31240.0508-289.2298-0.6570 -0.7078 -0.0826 qr6Z239.1308239.46720.0508225.475813.6550 13.6042 13.9914 qr7Z239.0506239.42050.0508225.475813.5748 13.5240 13.9447 数据分析(标定架右后) 数据分析(标定架右前)标定架三角面坐标点坐标轴测量值（mm）第二次测量值公差（0.002英寸）mm标准值mm偏差mm超差mm第二次测量偏差102pr1Y840.7979 841.2361 0.0508841.375-0.5771 -0.6279 -0.1389 2pr2Y840.7953 840.7986 0.0508841.375-0.5797 -0.6305 -0.5764 2pr3Y840.7917 841.4250 0.0508841.375-0.5833 -0.6341 0.0500 2pr4X-2505.5303 -2504.8122 0.0508-2504.47702-1.0533 -1.1041 -0.3352 2pr5X-2505.1694 -2505.0241 0.0508-2504.47702-0.6924 -0.7432 -0.5471 2pr6Z238.8504 238.4025 0.0508225.475813.3746 13.3238 12.9267 2pr7Z238.7332 238.4276 0.0508225.475813.2574 13.2066 12.9518 112ur1Y840.8164 840.8421 0.0508841.375-0.5586 -0.6094 -0.5329 2ur2Y840.7683 841.0746 0.0508841.375-0.6067 -0.6575 -0.3004 2yr3Y840.7535 841.5112 0.0508841.375-0.6215 -0.6723 0.1362 2ur4Z619.6097 619.2465 0.0508606.729812.8799 12.8291 12.5167 2ur5Z619.2567 619.0023 0.0508606.729812.5269 12.4761 12.2725 2ur6X-2871.6834 -2871.3362 0.0508-2870.1365-1.5469 -1.5977 -1.1997 2ur7X-2871.4186 -2870.3624 0.0508-2870.1365-1.2821 -1.3329 -0.2259 122qr1Y840.6646 841.2304 0.0508841.375-0.7104 -0.7612 -0.1446 2qr2Y840.6404 840.6671 0.0508841.375-0.7346 -0.7854 -0.7079 3qr2Y840.6231 840.7942 0.0508841.375-0.7519 -0.8027 -0.5808 2qr4X-3083.9921 -3083.7916 0.0508-3083.2298-0.7623 -0.8131 -0.5618 2qr5X-3083.6246 -3083.6248 0.0508-3083.2298-0.3948 -0.4456 -0.3950 2qr6Z237.5228 237.5641 0.0508225.475812.0470 11.9962 12.0883 2qr7Z237.7233 237.2219 0.0508225.475812.2475 12.1967 11.7461 •两次测量，z轴测量值与标准值误差较大，均超过12mm。
因为Z轴为水平轴，误差在10mm以上便可以用卷尺测量并通过肉眼就可以看出来：以“标定架左后”第2块坐标点u4、u5到z轴的距离为例，用卷尺测量值620mm和用三坐标测量值619.8402、 619.3708吻合 •居于以上分析，需对标定架重新调教，以排除对设备标定影响。