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Implementation method for time-triggered communication bus of aeroengine distributed control system

A distributed control and aero-engine technology, applied in transmission systems, bus networks, data exchange through path configuration, etc., can solve problems such as high development costs, system upgrade maintenance obstacles, etc., to ensure certainty and improve bus utilization , the effect of high bus utilization

Inactive Publication Date: 2016-01-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

Different types of smart sensors, smart actuators and controllers (smart components) will be connected through a communication network or a transmission bus, and corresponding bus interfaces need to be developed for different types. big obstacle

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  • Implementation method for time-triggered communication bus of aeroengine distributed control system
  • Implementation method for time-triggered communication bus of aeroengine distributed control system
  • Implementation method for time-triggered communication bus of aeroengine distributed control system

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Embodiment Construction

[0045] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] figure 1 Shown is the TTCAN controller structure based on AlterFPGA design. The overall functional module division of the "time-triggered CAN bus" controller is very clear, and the core of the controller is actually a "time + trigger + CAN bus" system. "Time" is provided by the frame synchronization module (TTCAN_FSE) in the controller. Through the hardware integration of TTCAN's synchronization timing algorithm in the frame synchronization module, a network global time timer that can be used for the entire local node is provided. "Trigger" means to execute the corresponding action within the provided time. The design of the TTCAN controller needs to include a trigger controller (TTCAN_TRG) and a time schedule memory (TTCAN_SCHEDULE). The former is used to set the trigger trigger time, and the operation is triggered by the global t...

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Abstract

The invention discloses an implementation method for the time-triggered communication bus of an aeroengine distributed control system and belongs to the field of aeroengine control technique. The method comprises the steps of A, implementing the physical layer of a TTCAN bus controller; B, implementing the data link layer of the TTCAN bus controller; C, implementing the time-triggered system of the TTCAN bus controller; and D, implementing the experimental platform of an aeroengine distributed control system. According to the technical scheme of the above method, a two-level TTCAN bus-contained controller is adopted, so that the rates of local timers at all bus nodes of an aeroengine in high-temperature and high-vibration environments are ensured to be synchronized. The real-time performance and the security are ensured, and the bus utilization rate is improved.

Description

technical field [0001] The invention relates to a method for realizing a time-triggered communication bus of an aero-engine distributed control system, belonging to the field of aero-engine control. Background technique [0002] In the past 30 years, the aero-engine control system has gradually transitioned from the original mechanical hydraulic system to today's full-authority digital electronic control. With the increasingly fierce competition in military aviation technology, the performance of the aero-engine digital controller and weight reduction With the further improvement of the demand, the centralized control framework has been difficult to meet the development needs, and the distributed control has gradually become a research hotspot. In the engine distributed control system, since various subsystems need to work together based on the communication bus, the performance of the communication bus will directly affect the stability and control performance of the co...

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Application Information

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IPC IPC(8): H04L12/40H04L29/06
Inventor 潘慕绚范学仕黄金泉姜彩虹
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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