| In the production of sheet metal,in order to meet the requirements for sheet quality in high-end fields such as automobiles,electronic instruments,and aerospace equipment,it is particularly necessary to improve the measurement accuracy of sheet metal.In a space-constrained metal sheet manufacturing plant,the reduction in volume and weight has facilitated the installation and maintenance of the thickness gauge.According to market demand,this thesis has designed a kind of high-precision,miniaturized X-ray thickness gauge.In terms of improving accuracy,the voltage output ripple is reduced by using a phase-shifted full-bridge soft-switch control technique.The curve fitting algorithm was designed by MATLAB and the functional relationship between the measured thickness and the detected voltage was obtained.For the complex electromagnetic environment at the production site,measures for suppressing electromagnetic interference were designed from two aspects of hardware and software,and the stability of the thickness measurement system was improved.In reducing the volume of X-ray thickness gauges,phase-shift full-bridge soft-switches are used instead of traditional hard-switches to reduce switching losses and reduce the temperature rise caused by switching losses inside the system,thereby reducing the space for heat dissipation of the system and avoiding The internal temperature rise of the system leads to a decrease in the accuracy and life of the electronic device.At the same time,this paper also designs a VB-based host computer monitoring page for high-voltage DC power supply,improves the safety of the equipment in the work,and provides a direction for the intelligent design of the system.Through the design of this thesis,the prototype was successfully built and the field test was completed.The volume and weight of the X-ray thickness gauge equipment were successfully reduced on the basis of ensuring the accuracy requirements of the metal sheet,and the design requirements were satisfied. |
PDF Full Text Request