Title :
Development of Time Triggered hybrid data bus System for small aircraft digital avionic system
Author :
Lin, Yu-Shang ; Yen, Hung-Ming ; Yu-Shang Lin
Author_Institution :
Nat. Cheng Kung Univ, Tainan
Abstract :
Digital avionics using line replaceable unit (LRU) and integrated module avionics (IMA) has been promoted into very simplified and flexible design supports in modern system. Digital data bus system using controller area network (CAN) for small aircrafts has improved the accidental event by adding time trigger (Lin et al., 2006). However, the predictability on data transmission requires enforced. The arbitration mechanism in CAN has awarded higher priority to those high frequency data or important real time data. Some deficiency may cause unpredictable delays on lower priority message and data lose when high bus load situation. To integrate time trigger into time triggered CAN (TTCAN) chip can improve the time scheduling in periodic data transmission (Shaheen et al., 2002). Consequently, the complexity in time sequence synchronization has brought in significant load in development. This research method classifies the data frequency and assigning the concept of time to integrate hybrid data bus system. The research goal uses concept of TTCAN on dual bus CAN system and improve disadvantage of CAN.
Keywords :
avionics; controller area networks; field buses; controller area network; digital data bus system; dual bus CAN system; integrated module avionics; line replaceable unit; small aircraft digital avionic system; time triggered CAN chip; time triggered hybrid data bus system; Aerospace electronics; Aircraft; Control systems; Data communication; Delay; Frequency synchronization; Hardware; Job shop scheduling; Protocols; Real time systems; Controller area node (CAN); Dual bus avionics; System hardware and software; Time triggered CAN (TTCAN);
Conference_Titel :
Digital Avionics Systems Conference, 2007. DASC '07. IEEE/AIAA 26th
Conference_Location :
Dallas, TX
Print_ISBN :
978-1-4244-1108-5
Electronic_ISBN :
978-1-4244-1108-5
DOI :
10.1109/DASC.2007.4391866