Synchronous control method based on FPGA

Abstract

The invention belongs to the technical field of digital circuits, and provides a synchronous control method based on an FPGA, which comprises the following steps that: the FPGA logically judges whether a synchronous condition is reached or not, if so, two devices to be synchronized are logically controlled to respectively send out a first-time synchronous indication signal, and the synchronous indication signals sent by the opposite devices are continuously collected until the first-time synchronous condition is reached; after the first synchronization is achieved, the two to-be-synchronized devices are logically controlled to send second synchronization indication signals respectively, and the synchronization indication signals of the opposite devices are continuously collected until the second synchronization is achieved; and synchronous and logic control is achieved, and the two devices simultaneously control actions of wings. When the folding / unfolding conditions of the left wing and the right wing cannot be achieved at the same time, a set of established synchronous control strategy is executed through the FPGA, so that synchronous output of the left wing and the right wing is rapidly and accurately achieved, and the control timeliness and the product reliability are remarkably improved.

Description

technical field [0001] The present disclosure relates to the technical field of digital circuits, in particular to an FPGA-based synchronization control method. Background technique [0002] The left and right wings are respectively controlled by two remote interface units (hereinafter referred to as RIUs) distributed on the left and right sides of the fuselage. Due to the complex conditions of synchronous control, it generally includes: wheel load signal, wing folding handle status signal, Folding solenoid valve control instructions, etc., these signals are transmitted by different devices through different buses, for example: the wheel load signal is sent by the CPU through the SPI bus, and the folding solenoid valve control instructions are sent by the manual / automatic control box through the HB6096 bus. The signal of the automatic control box is asynchronous, which leads to the synchronous condition of RIU1 and RIU2 to be asynchronous, so that the left and right wings ca...

AI Technical Summary

Problems solved by technology

However, it is limited by the long running cycle of the software, generally 5-10ms, which leads to a large delay in judgment and control, and poor synchronous control effect

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