High reliability and high power driving circuit and driving method

Abstract

The invention discloses a high-reliability high-power driving circuit which is used for driving a plurality of different loads. The driving circuit comprises a control computer, a coding output circuit, a driving unit and a serial-to-parallel conversion circuit, wherein the control computer generates load driving instructions for driven loads; the coding output circuit decodes the load driving instructions to acquire driving signal intensity and drive time corresponding to each load number; the serial-to-parallel conversion circuit performs serial-to-parallel conversion for the load driving intensity and a driving time signal to output the load driving intensity and the driving time signal to the driving unit; the driving unit comprises multichannel loading driving output ports; each loading driving output port is connected with a load, and outputs a driving signal corresponding to the driving signal intensity according to the connected load number, and after the drive time is reached, the loading driving output ports complete the output of the driving signal. Simultaneously, the invention further provides a high-reliability high-power driving method. Therefore, the driving for a plurality of different loads with high power at different time can be achieved.

Description

technical field [0001] The technical field of circuit design of the present invention relates to a group of high-reliability and high-power drive circuits and drive methods. Background technique [0002] As a new type of satellite propulsion system, the xenon ion electric propulsion system requires the drive control circuit to complete the drive functions including the solenoid valve, self-locking valve, flow device heater, vector adjustment mechanism, power processing unit and other modules of the xenon gas storage and supply subsystem. [0003] Traditional drive circuits usually use relays to drive long-term loads, and transistors and other drive circuits to drive short-term loads. Since the xenon ion electric propulsion system has a lot of loads and requires different driving times, the traditional load driving circuit has defects such as large circuit scale, large volume, heavy weight, and complex design. [0004] In addition, the traditional matrix circuit is mainly us...

AI Technical Summary

Problems solved by technology

[0005] At present, due to the large number of devices with low reliability such as relays and triodes used in the driving circuit, component failures are prone to occur in a complex space environment, and the failure probability increases, which reduces the reliability of the power driving circuit.

Therefore, there are certain limitations in the control method using traditional drive lines

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