Simulation And Experimental Research On Wire Rope Tension Detection Based On Magneto-elastic Effect Method

Wire rope is one kind of flexible component with good elasticity,high strength and light weight.It has many applications such as lifting,dragging,pulling and bundling.It is the key component of many equipment systems with complex loads and complicated working conditions,such as cranes,elevators,suspension bridges,passenger ropeways and so an.Its safety is directly related to the normal operation of equipment and the safety of people.It is essential to carry out wire rope safety monitoring research to realize real-time monitoring of wire rope tension to ensure the safe use of wire rope.The wire rope structure is complex,and the force condition during operation is complicated.The traditional wire rope tension detection method has been difficult to meet the increasingly high requirements of detection accuracy.In recent years,the wire rope tension detection based on the magnetoelastic effect has been widely studied by scholars.Compared with the traditional wire rope tension detection method,the wire rope tension detection based on the magnetoelastic effect has great advantages in wire rope tension detection for the advantages of high detection precision,fast response speed and non-contact with the wire rope.In the research process of wire rope tension detection based on magnetoelastic effect,due to the complex nonlinear relationship between wire rope tension and magnetic characteristic parameters,the structure and parameter setting standards of magnetoelastic sensors are still the key task in current research on the wire rope tension detection based on the magnetoelastic effect.After reading a large number of domestic and foreign wire rope tension detection literatures and deeply analysing the existing wire rope tension detection methods,the specific parameters of the two existing closed-circuit magnetoelastic sensors commmonly uesed were optimized.At the same time,the design scheme of a bypass magnetoelastic sensor based on magnetic ring was proposed,and has been verified by simulation and experiment.The magnetoelastic effect of the wire rope was analyzed.The influence of wire rope tension on the magnetization characteristics of wire rope was analyzed from the perspective of magnetic domain and energy conservation.The principle of detecting the tension of wire rope based on the magnetoelastic effect method was clarified.Two closed-circuit magnetoelastic sensors were designed,and the modeling and simulation analysis were carried out.The parameters of the closed magnetic circuit of the two sensors were optimized.The design scheme of a bypass magnetoelastic sensor based on magnetic ring was proposed.The structure of the bypass magnetoelastic sensor based on magnetic ring was optimized from the calculation of the excitation loop,the sensing signal processing and the practicability.The force-magnetic coupling model of the wire rope was established.Based on the ANSYS simulation software,the force-magnetic coupling analysis was carried out,and the relationship between the tension of the wire rope and the magnetic property parameters was obtained.The overall design scheme of the wire rope tension detection system was developed.The sensor was developed according to the simulation design.The design of the excitation circuit,the design of the induction signal preprocessing circuit,and the design of the signal acquisition and processing system were made.An experimental platform for wire rope tension testing were built.Tensile testing experiments were carried out on wire ropes.The rationality of the parameters design of magnetoelastic sensors was verified by experiments.The wire rope tension detection based on the magnetoelastic effect was realized,which provided a new idea and effective method for wire rope tension detection.