研究了一种新型的基于数字投影技术和条纹边缘检测技术的平坦度测量系统,阐述了该系统的测量原理、系统组成、标定方法及平坦度计算等。该系统采用的投影条纹法系三维全场式测量方法,能克服带钢垂直运动对测量的不利影响,与目前常用的平坦度测量方法相比,其抗干扰能力更强,测量结果更准确,并且硬件成本比较低。 A novel flatness measurement system based on digital projection technology and fringe detection technology is studied. The measurement principle, system composition, calibration method and flatness calculation of the system are described. The projection fringe method used in this system can overcome the negative influence of the vertical movement of the strip on the measurement. Compared with the commonly used flatness measurement method, the anti-jamming capability is stronger and the measurement result is more accurate. And the hardware cost is lower.