7/21/2023 0 Comments Redundant flight control system![]() ![]() A basic voting scheme is employed to compare outputs and dictate which of the two standby systems will take over in the event of a failure in the active system. The standby systems run in parallel to the main, active system throughout flight, running their own algorithms using their own independent sensors and air data computers. The potential for danger in the event of an error or malfunction of one of these systems is catastrophic for this reason, these systems are built with layers of redundancy to avoid allowing a single point of failure to disrupt the safe continuation of flight.įor example, a triple redundant system is a fault tolerant form of redundancy that incorporates one active system primarily controlling the aircraft and typically two additional systems on standby in case the main active system faces any sort of failure. For designers of avionics systems requiring DAL A certification, such as flight control computers, fly-by-wire systems, full authority digital engine control, flight displays and air data systems, adhering to the <1 in 10 -9 probability of failure is a complex undertaking. 509–512.The critical systems responsible for an aircraft’s safe flight are understandably subject to stringent safety regulations, to which their adherence must be proven before an aircraft is deemed airworthy. In: 10th International Conference on Control, Automation and Information Sciences, pp. Pang, H., Zheng, W.: Research on channel switching strategy of dual redundant flight control system under finite conditions. Lei, Z., Shi, L.: Dual-redundancy flight control system for small UAV. ![]() In: Proceedings of the AIAA Guidance, Navigation, and Control Conference, AIAA, pp. ![]() Kim, K., Kimy, D.M., Kim, S., et al.: Flight test of a flying-wing type UAV with partial wing loss using neural network controller. Zhang, R., Chen, X.: Fault diagnosis of UAV’s distributed flight control computers. Su, M., Yan, M.: Research on the application of redundancy computer in UAV system. 6(22), 616–623 (1993)Ĭheng, J., Chen, Y., Liu, S.: Comparative research and development trend analysis of flight control computer system. NASA Technical Report NASA/TM-2011–217168 (2011)īriere, D., Traverse, P.: AIRBUS A320/ A330/ A340 electrical flight controls-A family of fault tolerant systems. Hodson, R.F., Morgan D.R., Butler A.M., et al.: Heavy lift vehicle (HLV) avionics flight computing architecture study. Zhang, X.: On designing the difficult-to-implement RPV computer. Sun, G., Xu, Z.: Application of redundancy flight control system software design technology in unmanned helicopter. Xu, J., Xia, S.: Redundancy analysis and design of flight control computer. 30(4), 835–847 (2007)įerrara, A., Liberatore, P., Schaerf, M.: The complexity of action redundancy. ![]() Pashilkar, A.A., Sundararajan, N., Saratchandran, P.: Adaptive nonlinear neural controller for aircraft under actuator failures. In: Proceedings of the 20th Digital Avionics Systems Conference (DASC) (2001)Ĭhowdhary, G., Johnson, N.E., Kimbrell, M.S., et al.: Flight test results of adaptive controllers in presence of severe structural damage. Yeh, Y.: Safety critical avionics for the 777 primary flight control system. According to the safety requirements of large unmanned airship, the physical architecture of dual-redundancy with self-detection of flight control system is proposed. Based on the overall redundancy architecture of flight control system, the redundancy configuration of main components of flight control system, such as flight control computer, inertial navigation system, thrust vector system and thrust system, is given, and the redundancy management strategy based on master-master/master-slave channel hybrid working mode is proposed. A fault tree model of flight control system is established, and the safety analysis based on the fault tree model is carried out, and compared with the architecture of dual-redundancy and triple redundancy. The results show that the proposed 2 × 2 redundancy flight control system can meet the safety requirements of the unmanned airship, and its compatibility with the unmanned airship is better than the triple redundancy system, which can be used as a reference for engineering development. ![]()
0 Comments
Leave a Reply. |