Longitudinal collision risk control in land route based on PID

doi:10.16265/j.cnki.issn1003-3033.2023.09.1126

Abstract

Abstract:

In order to improve the safety of land route operation and reduce the hidden danger of interval conflict, the longitudinal collision risk of land route was simulated. Firstly, based on the position error theory, the mathematical model of the longitudinal collision risk of land route was established. Considering the comprehensive influence of human factors, the front and back boundaries of the safe area for aircraft operation were determined by the target safety level. Then, using the System Identification toolbox of Matlab to fit and identify the quick access recorder (QAR) data, the transfer function that reflects the corresponding relationship between the angle of the thrust handle and the speed of the aircraft was obtained. Based on this, a PID control system to control the longitudinal spacing of the aircraft in a safe area was designed. Finally, Simulink was used to verify the function of the control system. The results show that under the given air route flow (50 aircrafts/h), the control system can calculate the longitudinal safety interval between two aircrafts (3 326-16 674 m) in real time, and adjust the interval between the front and rear aircrafts to the standard value within 70 seconds when there is an interval conflict. PID control system can always keep the collision risk above the target safety level, which improves the safety of aircraft operation.

Key words: proportional integral derivative(PID) control, land route, longitudinal interval, collision risk, positioning error

LU Fei, CHEN Haonan. Longitudinal collision risk control in land route based on PID[J]. China Safety Science Journal, 2023, 33(9): 86-93.

Figures/Tables 14

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Tab.1

Simulation parameters

纵向速度误差均值	纵向速度误差标准差	纵向定位误差均值
0.021 9	0.893	3.246
纵向定位误差标准差	纵向规章间隔/km	航路流量/ (架·h^-1)
390.2	10	50
前机巡航速度/kn	飞行员干预时间/s	机身长度 $λ x$ /m
400	12.6	44.1

Tab.1

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