Anti-flow disturbance control method for quadrotor underwater robot based on adaptive strategy

By establishing a six-degree of freedom dynamics and kinematics model and implementing an adaptive strategy, the four-rotor underwater robot can effectively resist water flow disturbances, solving the problem of complex and high cost resistance to water flow disturbances in the existing technology, and achieving low-cost and efficient control effects.

CN115562317BActive Publication Date: 2025-03-21ZHEJIANG UNIV
2 Cites 0 Cited by

Patent Information

Application Number
CN202211410401.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-08
Publication Date
2025-03-21
Estimated Expiration
2042-11-08

AI Technical Summary

Technical Problem

The prior art is difficult to effectively resist water flow disturbances, resulting in the quadrotor underwater robots being unable to move forward steadily in turbulent water flows, and the traditional anti-interference strategy is complex and costly.

Method used

The anti-water flow disturbance control method of four-rotor underwater robot based on adaptive strategy is adopted. By establishing a six-degree of freedom dynamics and kinematics model, the mapping relationship between the hydrodynamic coefficient and attitude angle, forward speed and water flow velocity are obtained, and the rapid adaptation mode and periodic calibration mode are realized for adaptive adjustment.

Benefits of technology

It realizes low-cost and efficient anti-water flow disturbance control in different environments, reduces design complexity and cost, and improves the adaptability and working efficiency of the robot.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present invention relates to the field of underwater robots and robot control, and aims to provide a method for controlling a quad-rotor underwater robot against water flow disturbance based on an adaptive strategy. The method comprises: establishing a six-degree-of-freedom dynamic and kinematic model of a quad-rotor underwater robot by simulation or experimental methods; simplifying and processing to obtain the forward motion equation of the underwater robot; obtaining the mapping relationship between the hydrodynamic coefficient, attitude angle, forward speed and water flow speed based on the state coupling relationship between the attitude angle and the forward speed of the quad-rotor underwater robot; and adopting the control strategies of a fast adaptation mode and a regular calibration mode respectively when the underwater robot is traveling in the water. The present invention is easy to implement, low in cost, and does not need to rely on other sensor equipment; it can realize online adaptive adjustment, and at the same time has two modes that can effectively cope with different working conditions. The present invention can effectively approach the actual water flow speed by continuously buoying the underwater robot to calibrate the parameters, and can obtain a better control effect after calibration.
Need to check novelty before this filing date? Find Prior Art