Experimental Research On The Reliability Test Of Industrial Robot Servo Motors Under Multi-Conditions

With social progress and technological development,industrial robots have become more and more widely used in various fields,which puts forward higher performance requirements for the servo motor as its core component.Servo motors are affected by factors such as industrial robot motion trajectory planning,sudden turn and emergency stop,environmental conditions,etc.,which will lead to changes in the reliability of industrial robot servo motors.However,there are still few methods and devices for performance testing of servo motors under extreme operating conditions of industrial robots,and existing tests are not clear about the physical quantities that characterize their performance changes.Based on the above problems,there is an urgent need to build a set of equipment that meets the testing of industrial robot servo motors under multiple working conditions,and propose a method to test the performance of its dedicated servo motors according to the actual working conditions of industrial robots,and clarify different working conditions Impact on the performance of the servo motor.It provides evaluation criteria for the reliability and life prediction analysis of servo motors.In this thesis,the performance test and analysis of the ECMA type servo motor dedicated to industrial robots are carried out under normal working conditions and extreme working conditions.The research carried out is as follows.(1)Researched the development status of the servo motor test method and test device.According to the working condition stress of the servo motor of the industrial robot,the test principle and performance index of the servo motor were further analyzed,which lays a theoretical foundation for the design of the test method and the construction of the test device.(2)Designed the experimental device for the performance test of the servo motor of the industrial robot.It mainly includes the design of the mechanical part,the design of the electrical part and the design of the software part.The mechanical part was mainly the overall device design and the selection of the loading method.The electrical part was mainly for the system automation drive device and the selection of electrical components was designed.And the software part designed the PLC control and data acquisition system.(3)Based on the working stress and response stress under normal working conditions,the industrial robot servo motor was tested by experimentally.The experimental method was set according to the test principle,and the performance index of the servo motor were calculated and analyzed.The influence degree of the load inertia and steady-state speed on the performance of the servo motor were clarified,and the main performance evaluation indexes under conventional stress were selected.(4)The performance test of the servo motor of the industrial robot was carried out according to the temperature stress,overspeed stress and overload stress under extreme working conditions.According to the test principle,the experimental schemes were selected and the output results were processed.By comparing with the conventional conditions,the performance changes of the servo motor under temperature stress,overspeed stress and overload stress were clarified,and the main performance evaluation indexes under different stresses were selected.Through the research in this thesis,it is possible to obtain the change law of the servo motor performance of the industrial robot with various stresses,and further use data analysis methods to determine the characterization of industrial robot servo motor performance changes under multiple operating conditions.It provides evaluation criteria for the reliability and life prediction analysis of servo motors.By comparing the evolution law of service performance under normal working conditions and extreme working conditions,it provides reference data for subsequent reliability prediction and failure analysis of servo motors.