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Distributed flight control computer control system based on MPC8280

A flight control and control system technology, applied in the field of avionics, can solve problems such as complex task logic processing, achieve the effects of improving flexibility, avoiding excessive CPU usage, and improving efficiency and reliability

Inactive Publication Date: 2014-09-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a distributed flight control computer control system based on MPC8280, effectively combining MPC8280 and FlexRay bus for the aviation field, suitable for various applications such as flight control and flight simulation, and making up for In the prior art, the MPC8280 and FlexRay bus are used in the field of flight control. The present invention starts from two points of improving the computing speed (400MHz) of the distributed flight control computer CPU and increasing the speed of the internal communication bus (10MBPS). The new CPU and The combination of new communication bus types solves the complex problems of fault-tolerant algorithms, aircraft control laws and task logic processing in the existing flight control field

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  • Distributed flight control computer control system based on MPC8280
  • Distributed flight control computer control system based on MPC8280
  • Distributed flight control computer control system based on MPC8280

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Embodiment Construction

[0022] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0023] Such as figure 1 As shown, the minimum system of the CPU unit includes: Flash memory, used to store the operating system image and user program data; EEPROM memory, used to store the hardware reset configuration word and bootloader program of MPC8280; SDRAM memory as the memory for program execution; system clock The frequency is 100MHz, and the distributed synchronization of the crystal oscillator frequency is realized through the zero-delay buffer CY2305. Multiple internal buses are expanded through the memory controller of MPC8280, among which the CAN bus controller SJA1000 realizes the interface logic through CPLD, and the FlexRay communication controller MFR4310 is directly connected with the 60x bus of MPC8280. Serial communication interface, Ethernet interface and GPIO are realized through the communication management unit of MPC8280. Th...

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Abstract

The invention discloses a distributed flight control computer control system based on MPC8280. The MPC8280 and a FlexRay bus are effectively combined and used for the aviation field. The system meets the requirements of flight control, flight simulation and other applications, makes up for the blank that the MPC8280 and the FlexRay bus are used for the field of flight control in the prior art, and solves the problem that a fault tolerant algorithm, an aircraft control law and task logical processing are complex in the existing field of flight control.

Description

technical field [0001] The invention belongs to the technical field of avionics, and in particular relates to a distributed flight control computer control system based on MPC8280. Background technique [0002] The CPU unit of the existing distributed flight control computer adopts the MPC565 chip, and the internal communication bus adopts CAN. The main disadvantages are that the CPU calculation speed is low (the system clock is up to 56MHz), which cannot meet the requirements of modern UAV flight control for computer calculation speed; the second is that the communication rate of the internal communication bus of the computer is low (1MBPS), which cannot meet the internal information requirements of the computer. Exchange speed requirements. [0003] MPC8280 is a PowerQUICC series processor of Freescale Company, and the G2LE core has a high computing power per unit frequency. Passing the Dhystone2.1 standard test, its computing power can reach more than 400MIPS, and the p...

Claims

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Application Information

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IPC IPC(8): G05B19/418
Inventor 陈欣张煜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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