The V2O5 gelatin film was prepared by inorganic sol-gel method from V2O4 powder and was dried in first annealing operation,then,the dry V2O5 film was annealed in vacuum quartz pipe at 450 ℃ and 480 ℃ respectively,so the VO2 thin film was obtained.

In order to accelerate the development of digital control technique,a digital V2 control algorithm based on leading-edge modulation was proposed by introducting the blocks of digital controller and the theory of V2 control,and the principle of eliminating the sub-harmonic oscillation was investigated deeply.

The Difference Between RIP V1 and RIP V2;