A kind of ratio electronics depressurized system

The components such as a kind of ratio electronics depressurized system, including high-pressure pressure sensor (1), the first air source break-make latching valve (3), the first high_voltage isolation latching valve (6), first pressure proportioning valve (8), the first low-pressure sensor (10), control unit (13)；After control unit (13) receives target pressure value, acquire the pressure signal of high-pressure pressure sensor (1), the pressure signal of the first low-pressure sensor (10), it is compared with target pressure value, open the first air source break-make latching valve (3), the first high_voltage isolation latching valve (6), and corresponding closed loop control algorithm is called to adjust the apertures of first pressure proportioning valve (8) in real time, to realize the function of electronics decompression.By the invention it is possible to realize quick adjusting of the Pressure reducing ratio between 10~75, reaches decompression precision and be better than 1% level, while being substantially reduced system bulk, weight, the indexs such as lifting system reliability, lifetime of system.