A novel active disturbance rejection controller for an electromagnetic valve actuator

A New Electromagnetic Valve Actuator

In conventional internal combustion (IC) engines, engine valve displacements are fixed relative to crankshaft position. If these valves are actuated as a variable function of crankshaft angle, significant improvements in fuel economy can be achieved. Existing electromagnetically actuated variable-valve-timing (VVT) systems characteristically use springs to provide the large inertial power to mo...

A Disturbance Rejection Approach to Actuator andSensor

Design of Diesel Engine Adaptive Active Disturbance Rejection Speed Controller

The ship main engine speed control system is a typical nonlinear system and it is uncertain characteristics, It is influenced by the wind, wave, flow etc. So it is difficulted to designed the diesel engine mathematical model. This paper presents a nonlinear mathematical model of ship main engine. Because the active disturbance rejection controller does not depend on the mathematical model of th...

An Adaptive Internal Model-based Controller for Periodic Disturbance Rejection

This paper details the design of an adaptive internal model-based controller to attenuate periodic disturbances in the presence of random noise. The internal model-based controller is designed in two steps, making use of the separation principle to design a controller with the desired properties that stabilizes the closed-loop system. Periodic disturbances appear as harmonics of a fundamental f...

H∞ Controller for Disturbance Rejection in a Fixed Wing Uav

This paper presents a nonlinear H∞ controller for the rejection of input disturbances in a fixed wing Unmanned Aerial Vehicle (UAV). The controller acts in all states of a complete nonlinear dynamic model. Simulation results shows that the aircraft is successfully maintained in the desired stable condition after a finite pulse disturbance. Keywords— Nonlinear H∞ Control, Fixed Wing UAV. Resumo—...