Using active side-stick to prevent category Ⅱ pilot-induced oscillations

XU Shuting; XU Shuting; TAN Wenqian; TAN Wenqian; SUN Liguo; SUN Liguo; QU Xiangju; QU Xiangju

doi:10.7527/S1000-6893.2018.21861

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2018 , Vol. 39 >Issue 8: 121861 - 121861

DOI: https://doi.org/10.7527/S1000-6893.2018.21861

Fluid Mechanics and Flight Mechanics

Using active side-stick to prevent category Ⅱ pilot-induced oscillations

XU Shuting ,
XU Shuting ,
TAN Wenqian ,
TAN Wenqian ,
SUN Liguo ,
SUN Liguo ,
QU Xiangju ,
QU Xiangju

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School of Aeronautic Science and Engineering, Beihang University, Beijing 100083, China

Received date: 2017-11-13

Revised date: 2018-07-20

Online published: 2018-03-13

Supported by

National Natural Science Foundation of China (11502008);Aeronautical Science Foundation of China (2017ZA51002)

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Abstract

Modern fly-by-wire airframes are often designed to have relaxed static stability and side-stick control, making Pilot-Induced Oscillation (PIO) caused by actuator rate saturation as an important factor affecting flight qualities. In this paper, an active side-stick is designed as a means to alleviate pilot-induced oscillations due to actuator rate saturation. The stiffness of the active side-stick is changed with the actuator rate saturation, so as to mitigate the rate saturation. Based on the pilot-aircraft closed-loop system model with active side-stick, the simulation analysis and evaluation results show that the active side-stick to change the stiffness of the feel system can reduce the degree of saturation, improve flying qualities, and prevent category Ⅱ PIO due to actuator rate saturation effectively.

Key words： feel system; feel system; pilot-induced oscillations; pilot-induced oscillations; category Ⅱ PIO prevention; category Ⅱ PIO prevention; actuator rate saturation; actuator rate saturation; active side-stick; active side-stick

Cite this article

XU Shuting , XU Shuting , TAN Wenqian , TAN Wenqian , SUN Liguo , SUN Liguo , QU Xiangju , QU Xiangju . Using active side-stick to prevent category Ⅱ pilot-induced oscillations[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018 , 39(8) : 121861 -121861 . DOI: 10.7527/S1000-6893.2018.21861

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