A highly reliable satellite power controller matrix command system and its control method

Abstract

A high-reliability satellite power controller matrix command system and its control method. The command system includes a high and low data latch decoding circuit, a partition chip selection circuit and a triode open-drain output circuit. The high and low bit data latch decoding circuit receives the data code and the address code input by the partition chip selection circuit, writes the data code into the address code, and obtains two sets of pulse signals which are complementary to each other and outputs them to the triode open-drain output circuit; After the chip selection circuit reverses the address code output by the microcontroller, it is connected to the latch control terminal of the high and low data latch decoding circuit; the triode open-drain output circuit obtains 16 matrix command outputs under the action of two sets of pulse signals . The two data latch decoding chips of the high and low bit data latch decoding circuit of the present invention control the command output in the form of complementary code, which is effective during the operation of the whole system, reduces the probability of system output triggering commands by mistake, and improves the power supply. The reliability of the controller instruction unit.

Description

technical field [0001] The invention belongs to the technical field of aerospace power supply control, and in particular relates to a matrix command system of a highly reliable satellite power supply controller and a control method thereof. Background technique [0002] The power supply subsystem is one of the important components of the satellite platform, and its development level plays a key role in improving satellite performance and prolonging the working life of the satellite. Among them, the power controller, as the key single unit of the power system, is the control core of the power system, directly affects the reliability and service life of the whole star power supply system, and also determines the reliability and service life of the whole star to a large extent. [0003] In the command unit of the existing power controller, a latch is mostly used to latch the command signal and then control the command pulse signal. Since the input is a single signal, there is a...

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Problems solved by technology

[0003] In the command unit of the existing power controller, a latch is mostly used to latch the command signal and then control the command pulse signal. Since the input is a single signal, there is a problem that the data signal of the latch is not stable during the initial power-on process of the microcontroller. , it is easy to cause wrong output instructions, which will have an unpredictable impact on the entire system. The general method is to use the power-on reset signal of the microcontroller and the logic circuit to form a "closed gate" signal at the enable end of the latch. Let the latch prohibit the output. The current blocking time is mainly effective when the microcontroller is initially powered on and reset. After the initial power-on, it cannot protect the wrong output command caused by the program operation error.

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