Research And Design Of Wireless Charging System For Inspection Robot Based On Asymmetric Coupling Mechanism

With the advancement and development of technology,inspection robots have gradually replaced manual inspections to complete industrial inspections of equipment.Compared with the traditional manual inspection method,the inspection robot can work in a complex and harsh environment to avoid the occurrence of personal safety accidents,and can also collect data efficiently and accurately,saving maintenance time.However,the traditional contact charging scheme of inspection robots has many problems such as fragile plugs,poor water resistance,and poor environmental adaptability.This paper designs a wireless charging device for inspection robot based on asymmetric coupling mechanism to solve the above problems.The main work done is as follows:(1)Analyze and select the basic topology and various modules of the wireless charging system,and then deduce the importance of the compensation network and the optimal design of the coil by deducing the coupling model of the magnetic coupling mechanism.The LCC-S compensation topology is selected and its resonant network model is established.(2)First construct an asymmetric wireless energy transmission circuit model and simulate its transmission efficiency to prove that the asymmetric wireless charging system has lower transmission efficiency and weaker anti-offset ability,so the theoretical study of the transmission characteristics of the multi-coil matrix network is proposed.It can effectively improve the power transmission ability.Then the structure and shape of the coil are optimized,and at last the effects of three different arrangements of multi-coil on the transmission characteristics are simulated.(3)At first the cooperative working mode of the array coil matrix is analyzed,and the characteristics of the coupling mechanism under the three working modes are simulated.Then a method for completing the position recognition of the receiving end by detecting the change of the mutual inductance value is proposed,and a relay switch matrix is designed to realize the switching control of the coil that is determined after the position of the receiving end is determined.(4)According to the previously confirmed design scheme,the parameters of the primary and secondary sides of the inspection robot WPT system under different working conditions were analyzed and applied to the overall simulation of the system in Matlab/Simulink simulation software to verify correctness and reliability of the proposed method.