Research on Negative Pressure Wall Climbing Absorption System Based on SMA

This paper presents a negative pressure absorption system of climbing robots. Based on the utilization rate of the negative pressure climbing robot, the impacts of locomotion system adsorption forces allocation were studied. In order to solve the problems of sliding wall climbing robot's great power consumption and low efficiency design, a negative pressure generator of the low power consumption and high efficiency was investigated. After the analysis of robot's pressure needed and flow leakage fluid dynamics, the relationship between negative working pressure was established.Through the thermo dynamic analysis of the component process of state changes in suctions flow field was described, and the principles of the adsorption system were revealed. The results show that negative pressure can be stably generated and the system realize firmly adsorbing on wall. The theoretical and experimental result of wall climbing robot contributes to further perfecting the performance of robot.