Rapid flow control valve set based on PWM and PCM technologies and control method

The invention relates to a rapid flow control valve set based on PWM and PCM technologies. A plurality of parallel throttling pipelines are arranged in a main pipeline. Each throttling pipeline is provided with a proportional switching valve connected with a programmable logic controller. A control method of the rapid flow control valve set includes the following steps that the opening areas of the proportional switching valves of all the throttling pipelines are sequentially set to be doubled clockwise according to the throttling pipelines; the programmable logic controller converts the throttling set valve of the main pipeline into a binary code, numerical values of all bits of the binary code are converted into pulse signals after the throttling pipelines are sequentially optimized so that stop valves arranged on all the throttling pipelines can be controlled to be opened and closed. The parallel throttling pipelines are arrayed in an annular mode with the axis of the main pipeline as the center instead of being arrayed on the same plane in parallel, and the differences between pipe resistance of the inlets of the throttling pipelines are eliminated; the PWM valve proportional control technology is combined with the traditional PCM gas strength control technology, and the rapid and accurate flow regulation of large-flow gas is achieved.