Because of having millions of well vertically aligned hairs on their feet,geckos can fluently walk on the vertical walls and even ceilings.Vertically aligned ca
The high controllability and high resolution control of linear ultrasonic motors depend on effective control of driving signals. For a good control characterist
For a class of aeroengine nonlinear systems,a novel nonlinear sliding mode controller(SMC)design method based on artificial bee colony(ABC)algorithm is proposed