A solar array driver suitable for long-term continuous operation

Abstract

In view of the need that a satellite solar cell array needs to track the sun for a long time, the invention provides a mechanism driver which has the advantages that the power consumption is low; the structure is compact; the weight is light; the cooling performance is good; stability and reliability are realized; and remote monitoring can be carried out. The driver comprises a power supply module, a control module, a communication module, a driving module, a signal acquisition module and a telemetry output module. Control signals are transmitted to the control module through a communication interface, the control module processes the signals, and then driving control on two stepper motors is realized through the driving module; the signal acquisition module acquires signals of a zero hall sensor arranged on a driving mechanism, and the position of the driving mechanism is controlled; and the telemetry output module and the communication module feed state parameters of the driver back to a remote computer, and real-time monitoring on signals such as the position of the driving mechanism, current of the driving mechanism motor and the temperature is realized. The driver can drive the solar cell array to realize long-term 360-DEG continuous rotation and any-angle reciprocating swinging.

Description

technical field [0001] The invention relates to the field of space technology, is applicable to the drive control of two solar battery array drive mechanisms, and particularly refers to low- and medium-orbit satellites that need to track the sun continuously for a long time. Background technique [0002] The solar cell array driver is an important stand-alone unit on space satellites, space stations and other aircraft. The solar cell array receives light in the illuminated area and converts it into electrical energy as the energy source for the entire star. The solar cell array driver mainly realizes the orientation of the solar cell array to the sun. function, so that the solar cell array can effectively receive light. The solar battery array driver communicates with the host computer through the RS422 interface, receives control instructions, and drives the solar battery array to perform actions such as tracking the sun, capturing the sun, servoing, and returning to zero. ...

AI Technical Summary

Problems solved by technology

[0003] At present, domestic solar cell array drivers consume a lot of power. For solar cell array drivers that work continuously, the driver module generates a lot of heat and has poor heat dissipation performance. It is necessary to add heat sinks on the chip to reduce the stability of the chip and the driver. This brings about the problem of increased weight of the drive, which increases the launch cost; the position of the solar array drive mechanism is important control information for the sun orientation function. Once the position signal sensor fails, the solar array cannot be reset to zero, etc. Actions may cause the solar cell array to fail to obtain the best lighting effect or reduce the time for the solar cell array to receive light, thereby reducing the power generation efficiency of the entire star. If the power generation capacity is improved by increasing the area of ​​the solar cell array, the This increases weight and launch costs, so ensuring high reliability of solar array drivers is critical

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