In order to solve the lower measurement efficiency in traditional modulation profilometry, a fastmodulation profilometry is proposed based on double color projections.
针对传统调制度轮廓术测量速度较慢的问题，本文提出了彩色双通道投影的调制度轮廓术。
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The three-phase inverters with the conventional space-vector pulse width modulation (SVPWM) have fast dynamic response, but it is complex to be implemented and needs highly speed microprocessor.
Since the synchronization error is independent of information signal, the chaotic modulation for large amplitude and fast varying information signals can be achieved.