Disturbance suppression for quadrotor UAV using sliding-mode-observer-based equivalent-input-disturbance approach
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Updated: Jan 28, 2026

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Published on: January 3, 2017
Wenjing Cai1, Jinhua She1, Min Wu2
1School of Automation, China University of Geosciences, Wuhan 430074, Hubei, China; Hubei Key Laboratory of Advanced Control and Intelligent, Automation for Complex Systems, Wuhan 430074, Hubei, China; School of Engineering, Tokyo University of Technology, Hachioji 192-0982, Tokyo, Japan.
Abstract:
This paper presents a new control scheme for quadrotor unmanned aerial vehicle attitude control and disturbance suppression. A quadrotor dynamic model is divided into two subsystems: fully-actuated and under-actuated. While the PID method is used to control the fully-actuated subsystem, a sliding-mode-observer-based equivalent-input-disturbance approach is used to control the under-actuated subsystem. The system design is simple, and it is globally uniformly ultimately bounded. Simulations and comparisons demonstrate the effectiveness of the method.
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What is a Mode?
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...