Electric steering engine fine anti-interference control method under rudder deflection angle constraint

By constructing an unknown frequency disturbance observer and a backstepping controller, the control problem of the electric servo under multi-unknown frequency sinusoidal disturbances and rudder angle constraints is solved, and a high-precision and high-reliability anti-interference control effect is achieved.

CN120722746APending Publication Date: 2025-09-30BEIHANG UNIV +1
2 Cites 0 Cited by

Patent Information

Application Number
CN202510899556.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-01
Publication Date
2025-09-30

AI Technical Summary

Technical Problem

The existing anti-interference control method cannot accurately estimate the multi-unknown frequency sinusoidal interference and has difficulty in dealing with the rudder angle constraint, resulting in conservative control effect of the electric servo and unable to meet the high-precision tracking control requirements in complex interference environments.

Method used

By establishing a mathematical model of an electric servo with unknown frequency and multi-source interference, constructing an unknown frequency interference observer and designing a backstepping controller based on the barrier Lyapunov function, online estimation and compensation of multiple unknown frequency interferences can be achieved, thereby improving the rudder angle tracking capability.

Benefits of technology

It achieves high-precision anti-interference control under multi-unknown frequency sinusoidal interference and rudder angle constraints, improves the control accuracy and reliability of the electric servo servo system, and is suitable for electric servos facing complex interference environments.

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

Abstract

The invention relates to an electric steering engine fine anti-interference control method under the constraint of a rudder deflection angle, and belongs to the technical field of electric steering engine control. Firstly, an electric steering engine mathematical model considering unknown frequency multi-source interference is established; secondly, aiming at multi-source interference generated by cogging torque, magnetic flux harmonic waves, PWM dead zone torque and the like, constructing an unknown frequency interference observer to estimate interference; and finally, designing a backstepping controller based on a obstacle Lyapunov function, and completing the design of the fine anti-interference control method of the electric steering engine under the constraint of the rudder deflection angle by combining the interference and the estimated value of the first derivative of the interference. The method realizes fine anti-interference control of the electric steering engine, has the characteristics of high control precision and good reliability, and is suitable for the control problem of the electric steering engine under multi-source interference and constraint.
Need to check novelty before this filing date? Find Prior Art