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Study on Analysis Process for Slip Torque Design Control of Impact Hammer Drills
김승현(Seung Hyeon Kim),권상엽(Sang Youp Kwon),고동신(Dong Shin Ko),허덕재(Deog Jae Hur),동광호(Kwang Ho Dong) Korean Society for Precision Engineering 2016 한국정밀공학회지 Vol.33 No.5
This paper describes the derivation methodology of the working torque predictive model that can be used in the initial design stages of the impact hammer tool. The working torque control mechanism is designed, taking into account various factors, such as the force of the spring and friction. Firstly, the analysis dynamic model for working environments was modeled as an additional bush and spring, and verified by comparing the test results of the working torque. Secondly, the main performance parameters of the working torque were theoretically defined by analyzing the operating mechanism. The equation to predict the working torque was derived using the dynamic analysis results according to the value changes of the parameters. The prediction equation of the working torque was validated by comparing the predicted results with the experimental data. The error difference between the experimental data and the predictive model results was found to be 8.62%.
수평 착자형 액추에이터의 전자기력 성능 향상에 관한 연구
허덕재(Deog Jae Hur),이재혁(Jai Hyuk Lee),권상엽(Sang Youp Kwon),이성수(Sung Su Lee) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.4
This paper describes optimization design to improve the performance of bandwidth and the maximum acceleration of the linear AC vibrator with horizontal magnetization. The variable was set the electromagnetic force of the exciting force of the haptic vibrator. Optimization in horizontal magnetization design leads the maximum electromagnetic force when the permanent magnet and coil are centrally aligned. In addition, when increasing the width and height of magnet, the electromagnetic force has increased also. The final optimized design is applied with the parameter combination, and the electromagnetic force has risen about 81.4% compared to the previous model.