Design and analysis of comprehensive performance test-bed for planetary roller screw based on thermal error compensation
The comprehensive performance of the planetary roller lead screw is the main indicator of the lead screw performance.The existing test systems are mostly measured by the static measurement method,with complex operation and high accidental error.Through the research on the test principle,hardware design,software and hardware communication,and software interface structure of the dynamic test system for the comprehensive performance of planetary roller screw,a set of dynamic test system for the comprehensive performance of planetary roller screw was designed.Based on LabVIEW,the human-computer interaction and control monitoring software of the upper computer was designed to detect the thermal elongation of the lead screw,and the least square method was used to analyze the relationship between the temperature rise and displacement of the lead screw,and to compensate the error of the positioning accuracy test.The experimental results showed that the designed test-bed system could measure the positioning accuracy,noise,temperature rise,limiting speed and acceleration of the planetary roller lead screw.Meanwhile,the thermal error measurement compensation system could reduce the impact of temperature change on the measurement position.The accuracy measurement index before and after compensation was improved by more than 30%,and the accidental error was small and the accuracy was improved.
comprehensive performanceplanetary roller screwservo controlthermal error compensationtest system
NETL
NSTL
万方数据
维普
