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脉宽调制技术目前已广泛应用于高频电磁加热系统、开关电源等领域1，本文首次将脉宽调制技术用于激光扫描测量系统，解决了激光扫描测量中国不同材料对激光的散射光强不同、不同曲面对激光光强反射各异以及物体表面镜面反射等问题给测量精度带来的严重影响2，利用激光扫描系统中的摄象机直接作为光强反馈系统，实现了测量过程中的光强自动控制，有效地降低了光强饱和等问题给测量带来的误差．
Pulse width modulation technology has been widely used in high-frequency electromagnetic heating systems, switching power supply and other fields 1, the first pulse width modulation technology for laser scanning measurement system to solve the laser scanning measurement of different materials in China on the laser scattering light intensity is different , Different surfaces of the laser light intensity of different reflections and the mirror surface reflection of the object to the measurement accuracy of the serious impact 2, the use of laser scanning system camera directly as the light intensity feedback system to achieve the measurement process Light intensity automatic control, effectively reducing the light intensity saturation and other issues to the measurement error.