FPGA+DSP based rocket engine onboard fault diagnostic device

Abstract

The invention discloses an FPGA+DSP based rocket engine onboard fault diagnostic device. The FPGA and DSP combined dual-processor collaborative technology is adopted, and an analog-digital conversionchip is controlled through the flexible configuration capacity and the parallel computing capacity of an FPGA to achieve the rocket engine sensor data collection function and the outside input commandentering function. Data are transmitted to a DSP through a bus, only a fault diagnosis algorithm operates in the DSP, DSP operation loads are reduced, and the fault diagnosis algorithm is achieved through the strong operational capability of the DSP. According to the rocket engine onboard fault diagnostic device, a micro-processing module, a data collection module, a power module, a communicationmodule, a fault display and alarm module and a function module of a data storage unit are all integrated on a board card, corresponding interfaces are left, and the fault diagnostic device is high inintegration degree and small in size; and safety and reliability are achieved, maintenance and expansion are easy, and the fault diagnostic device can be used in multiple kinds of rocket engine onboard fault diagnosis.

Description

technical field [0001] The invention relates to the technical field of rocket engine fault diagnosis, in particular to a rocket engine airborne fault diagnosis device based on FPGA+DSP. Background technique [0002] The rocket engine is a complex thermodynamic system operating under extreme physical conditions, and the occurrence and development of its faults are extremely rapid and destructive. Therefore, higher requirements are put forward for the safety and reliability of the rocket engine. The development of a reliable and effective engine fault diagnosis system can give early warning and judgment of the faults that occur during the working process of the engine, and can take effective measures in time to protect the rocket and the engine. Load safety can effectively avoid catastrophic accidents caused by engine failure. [0003] At present, many fault diagnosis algorithms have been proposed to monitor the health of the engine, but most of the algorithms stay in the sta...

AI Technical Summary

Problems solved by technology

If it is applied to rocket engine fault diagnosis, it is only applicable to the hardware loop simulation platform and bench test, and it is difficult to apply it to the real rocket engine onboard diagnostic device, which will take up a large volume and weight, and cannot achieve Weight reduction, cost reduction required for rocket motor control systems

And the device only processes 6-channel AD data, if it is applied to a device with many sensors such as a rocket engine, an additional board is required

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