Journal of Jilin University(Engineering and Technology Edition) ›› 2026, Vol. 56 ›› Issue (7): 1798-1810.doi: 10.13229/j.cnki.jdxbgxb.20241340

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Sliding mode anti-sway control methods for quadrotor transportation systems

Bin WEN1,2(),Wen-dan LV2,Qi-cheng MEI2,Ya-hui WEI3(),Kai WU2   

  1. 1.Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station(China Three Gorges University),Yichang 443002,China
    2.College of Electrical Engineering & New Energy,China ThreeGorges University,Yichang 443002,China
    3.Innovation and Entrepreneurship College(Undergraduate Quality Education Center),China Three Gorges University,Yichang 443002,China
  • Received:2024-12-18 Online:2026-07-01 Published:2026-08-12
  • Contact: Ya-hui WEI E-mail:wenbin_08@126.com;weiyahui@ctgu.edu.cn

Abstract:

A control scheme using non-singular fast sliding mode control and a Nonlinear Extended State Observer (NESO) is proposed to solve the problem of reduced trajectory tracking performance caused by load swinging during transport in quadrotor load transportation systems.First,the dynamic model of the quadrotor system is built using Lagrange-Euler equations.The system is divided into three parts: position control, attitude control, and swing angle suppression.Controllers are designed for each part.NESO is used to estimate and compensate for uncertainties,disturbances,and noise in real time.Simulations show that this method reduces the maximum load swing angle by about 30%,and significantly cuts swing duration and load oscillation times compared to methods without swing control.It also improves the trajectory tracking accuracy of position and attitude controls.This scheme balances robustness and efficiency through decoupled and coordinated control,offering a practical solution for quadrotor transportation systems.

Key words: navigation,guidance,and control, quadrotor transportation system, non-singular fast terminal sliding mode, nonlinear extended state observer, swing suppression

CLC Number: 

  • TP273

Fig.1

Diagram illustrating the structure of the quadrotor suspension system"

Table 1

Explanation of variables used in model construction"

符号意 义
x,y,z四旋翼质心的位置在惯性坐标系的位置坐标
M无人机的质量
α吊挂绳在yoz平面的投影与z轴的夹角
ω1?44个旋翼的转速
l四旋翼的轴距
?,θ,ψ绕机体坐标系xb,yb,zb三轴逆时针转动的角度
m负载的质量
β吊挂绳与yoz平面的夹角
g重力加速度
L吊挂绳的长度

Fig.2

Structure diagram of the control system"

Table 2

Parameters of the quadrotor transportation system model"

符号参数符号参数
M2.00 kgm0.40 kg
l0.20 mL0.30 m
Ix,Iy1.25 Ns2/radIz2.5 Ns2/rad

Table 3

Sliding mode controller parameters"

符号参数符号参数
ax,y,z0.8cx,y,z0.5
k1(x,y,z)1k2(x,y,z)1
a?,θ,ψ,α,β5c?,θ,ψ,α,β1
k1(?,θ,ψ,α,β)2k2(?,θ,ψ,α,β)2

Table 4

Parameters of the third-order extended state observer"

符号参数符号参数
μ1x,y,z100μ1(?,θ,ψ)50
μ2x,y,z50μ2(?,θ,ψ)10
μ3x,y,z20μ3(?,θ,ψ)10

Fig.3

Trajectory tracking and swing angle suppression effect in x and y directions"

Table 5

Results of repetitive experiments"

负载质量/kg最大摆动幅度/rad摆动持续时间/s
有抑制无抑制有抑制无抑制
0.20.4560.7425.006>20
0.30.4560.7445.018>20
0.40.4560.7445.022>20
0.50.4550.7325.032>20
0.60.4540.7075.040>20

Fig.4

Simulation structure of the attitude calculation system"

Fig.5

Comparison of amplitude limiting filtering effects"

Fig.6

Tracking effect of attitude angles and altitude signals"

Fig.7

Estimation effect of disturbances in each subsystem"

Fig.8

Comparison of controller chattering with different reaching laws selected"

Fig.9

Comparison of load swing angle control effects of a quadrotor suspension system using different methods"

Table 6

Comparison of control performance"

指 标本文方法ADRC[16]BPNN-ADRC [17]
最大摆动幅度/rad0.4510.5950.574
摆动持续时间/s5.0225.2855.101
振荡次数/次132
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