Tension control system of multi-tension continuous coating equipment in high vacuum environment

The invention relates to a tension control system of multi-tension continuous coating equipment in a high vacuum environment, which is characterized in that an initial data setting module is used for setting a process target tension SV, establishing an electronic virtual axis and setting the rotating speed V0 of the electronic virtual axis, a power module is used for starting film running, a speed data acquisition module is used for acquiring the rotating speed Vn of each power roller in real time, and the speed data acquisition module is used for acquiring the rotating speed Vn of each power roller; a tension data acquisition module is adopted to obtain the current process tension PV of each power roller in real time, the current process tension PV and the target process tension SV are compared in real time through a tension comparison module, an electronic gear ratio R is adjusted by a PID controller of a speed correction module, and then the rotating speed Vn of each power roller is adjusted; the base film