In order to design a biomimetic amphibian variable magnetic device that can ensure the adsorption stability and maneuverability of wall-climbing robot
the study of the device is developed.The composition and working principle of the device are introduced.The mechanically of device is analyzed
the mechanical model of avoiding overturn
slide and fall on hull is established.And the mechanical model is simulated by Matlab and is verified by experiment.So a theoretical basic for ascertaining the magnetic force of a magnetic device is provided by the study.