Research On Robustness Optimization Technology For Anti-Vibration Of Force-Balanced Relay

Force-balanced relays are widely used in aerospace,weaponry,electronic systems and other fields due to their outstanding environmental adaptability.The quality of their products directly affects the performance and reliability of the entire system.However,due to the lack of efficient and complete consistency theory analysis,design and verification technology,the consistency and reliability problems caused by the excessive quality dispersion of batch products are still far from the gaps in foreign countries.Therefore,a thorough study of the robust optimization design method for determining the key design parameters,quantitativeing allotment tolerance of products and verifying the optimization scheme theoretically which can effectively improve product performance and reliability of guarantee system is of great significance.Firstly,this paper analyzes the failure mechanism of a force-balanced relay with anti-sinusoidal vibration performance,design comparison verification test,and gradually analyzes the influence degree of each assembly component on the resonance failure of the system during operation;determines the failure mode and influence of the system.The critical dimension design parameters and assembly process parameters of the system performance provide data samples for subsequent robust design.Secondly,the UG and ANSYS Workbench model are used to perform modal analysis and frequency response analysis,and the inherent mode and frequency response of the vibration are calculated.And the vibration test proves each other to complete the construction of the virtual prototype platform.On the basis of this,in order to further meet the demand and calculation of a large number of parameter samples in the robustness analysis process,a fast calculation method based on the resonance frequency is studied.Based on the PSO algorithm,the optimal Latin hypercube method and the Kriging approximation model are combined to complete the rapid calculation model,which reduces the complexity of modeling and improves the accuracy of modeling.Then,the global optimal parameter design method based on response surface is studied to solve the limitation of traditional Taguchi parameter design method.Firstly,the traditional Taguchi thought is used to determine the stability factors and adjustment factors in the design parameters.Through the interaction analysis,the adjustment factors that do not affect the output characteristics of the stability factors are selected,and the explicit response surface model is established for the stability factors.Furthermore,use the multi-objective particle swarm optimization algorithm for parameter optimization.Finally,the resonance frequency are improved without changing the parameter tolerance.Finally,by studying the defects of the contribution rate calculation method in the traditional Taguchi tolerance design,determines the reason why the tolerance design accuracy cannot reach the design goal,and then establishes the successive approximation tolerance design model based on the variable contribution rate coefficient.Then the acceleration coefficient model of successive optimization process is established by MATLAB,and the automatic optimization of tolerance is realized by combining Monte Carlo consistency evaluation method.The research results in this paper is to supplement and improve the robust design theory of output consistency of force-balanced relay in vibration environment.Meanwhile,the research ideas and design methods can be extended to other types of mechanical and electrical components in the process of performance improvement and consistency optimization.