A method based on digital fringe projection and digital phase shifting technique is proposed in this thesis for 3d shape measurement.
本文提出一种基于数字条纹投影与数字相移技术的三维形面测量系统。
A new optical profilometry linearly coded profilometry is presented. It USES a periodic linear structure illuminating light to code the surface and the phase shifting technique to decode the phase.
提出一种新的光学轮廓术线性编码轮廓术，它利用周期线性结构光编码三维物面，并辅以相移技术来解调相位。
Phase shifting is the key technique in phase shifting interference metrology and it greatly effects the measuring precision even results in a failure.
相移器是相移干涉计量中的关键技术，对测量精度有很大的影响，关系到相移技术的成败。
The resonant soft switching inverter arc welding power source uses LCL type structure in the main circuit, and selects phase shifting pulse wide modulation technique in the control system.
研制的谐振式软开关弧焊逆变电源，主电路采用新型LCL结构，控制系统选用恒频移相调脉宽控制方案。
The phase changes in the imaging process can be tested accurately by the phase-shifting technique and then used for ray tracing to get the spot diagram.
以结构光条纹相位为信息载体，采用相移技术精确地测量结构光条纹成像过程中相位的变化，实现高分辨的光线追迹，得到点列图。
In the second place, paper researches the topology extends based on Triangular carrier phase shifting SPWM technique.
其次，论文研究了基于三角载波移相SPWM控制方法的拓扑扩展。
For multiple back-to-back four-quadrant converter, a modified SPWM technique is combined with carrier phase-shifting control, which reduces current harmonic and enhances power exchange ability.
针对多重化的背靠背四象限变流器，采用了载波移相控制与改进的SPWM调制相结合的方法，减小了电流谐波，提高了功率交换能力。
For multiple back-to-back four-quadrant converter, a modified SPWM technique is combined with carrier phase-shifting control, which reduces current harmonic and enhances power exchange ability.
针对多重化的背靠背四象限变流器，采用了载波移相控制与改进的SPWM调制相结合的方法，减小了电流谐波，提高了功率交换能力。
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