基于激光器的汽车仪表盘总成安装误差算法

The car dashboard assembly installation error algorithm based on laser

传统的汽车仪表盘总成安装误差的测量一般采用人工检测法或三坐标测量机测量法,此两种方法都存在自动化程度低,测量周期长等不同程度缺陷,激光扫描技术则可以有效地解决上述两种方法的缺陷。文中针对于采用激光扫描技术对仪表盘的总成安装误差的测量提出一种基于向量分解法的测量方法。首先,在仪表盘边缘取一点A,取A点所在激光线上的切向量f,将f采用施密特正交化方法沿仪表盘轮廓线上的向量c和垂直于向量b的向量a分解,然后在模具边缘上取与仪表盘边缘A最近的点B,AB构成向量g,将g沿向量a和垂直于向量a的向量e分解即可得到仪表盘总成的安装误差,即间隙gapdis,和面差surfdis,可快速实时地得到仪表盘与模具之间的间隙和面差,实验结果证明此种算法具有较好的稳定性,准确性。

Traditional car dashboard assembly installation error of three coordinate measuring machine measurement generally uses artificial test or measurement, the two methods have low degree of automation,varying degrees of defects such as long measurement period,laser scanning technology can effectively solve the defects of the above two methods. This article on the laser scanning technology to the dashboard assembly installation error measurement puts forward a kind of measurement method based on vector decomposition method. First of all,on the edge of the dashboard take point A,take A point where the laser line tangent vector f,f the schmidtorthogonalization method along the vector contour line the dashboard and perpendicular to the vector of the vector b c A decomposition,and then on the edge of the mould on the edge with the dashboard A nearest point b,AB vector g,will g along the vector A and perpendicular to the vector is A vector e decomposition can get dashboard assembly installation error,namely gapdis clearance,and poor surfdis quick real-time and difference between the dashboard and die clearance is obtained.