Defect is one of the most problems in car manufacturer especially in PT. XYZ. Paint Problem, Scra... more Defect is one of the most problems in car manufacturer especially in PT. XYZ. Paint Problem, Scratch, Dent, Shortage, Gap and Transition are some problems which usually found in the assembly process. Those problems are caused by many factors: shipment, logistic or even assembly process itself. Thus, there must be some ideas or ways to be developed to decrease total problems in the assembly process. The purpose of decreasing total defects in the assembly line is because there are too many cars park and wait at the rectification area to get repaired. Therefore, this research is one of many ways that can reduce the amount of defects in the cars by improving In-Line and Shadow Station Rework concept which means to repair or rework light defect such as small scratch and paint problem. In addition, there is supporting tools called B-Pillar protector to prevent damages at the most problematic part (B-Pillar) at the station which contributes the most damage. With this method and supporting tool, PT.XYZ hopes total defect cars at the end of assembly line will reduce.
In this study, a novel six-axis force/moment (F/M) sensor was developed. The sensor has a novel r... more In this study, a novel six-axis force/moment (F/M) sensor was developed. The sensor has a novel ring structure comprising a cross-beam elastic body with sliding and rotating mechanisms to achieve complete decoupling. The unique sliding and rotating mechanisms can reduce cross-talk effects caused by minimized structural interconnection. The forces Fx, Fy, and Fz and moments Mx, My, and Mz can be measured for the six-axis F/M sensors according to the elastic deformation of strain gauges attached to the cross beam. Herein, we provide detailed descriptions of the mathematical models, model idealizations, model creation, and the mechanical decoupling principle. The paper also presents a theoretical analysis of the strain based on Timoshenko beam theory and the subsequent validation of the analysis results through a comparison of the results with those obtained from a numerical analysis conducted using finite element analysis simulations. The sensor was subjected to experimental testing t...
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin
Remotely Operated Vehicle (ROV) adalah robot yang dapat bergerak di pesawat yang dikendalikan ole... more Remotely Operated Vehicle (ROV) adalah robot yang dapat bergerak di pesawat yang dikendalikan oleh manusia dari jarak jauh, yang dibuat oleh manusia untuk memfasilitasi pekerjaan manusia untuk eksploitasi bawah air. Penelitian tentang ROV dimaksudkan untuk memungkinkan ROV bergerak sesuai dengan pesanan. Gerakan pada ROV termasuk bergerak maju, mundur, belok kanan dan belok kiri. Sistem kontrol ROV dimulai dengan membuat perintah pada PC (Personal Computer) yang akan memerintahkan dari PC yang akan diterima oleh Mikrokontroler Arduino Uno untuk diteruskan ke L293D Shield Motor dan Modul Bluetooth HC-05 untuk menggerakkan Motor DC pada ROV. Data yang dibuat pada PC dalam bentuk data serial akan dipanggil dan dibaca oleh Mikrokontroler Arduino Uno dan akan dilakukan dengan Bluetooth pada VT SmartPhone, ROV dapat dicocokkan dengan instruksi dari aplikasi pada smartphone dan untuk memasok daya Arduino menggunakan Power Bank. Dari hasil pengujian RPM didapat bahwa nilai rata-rata dari se...
In this study, a novel strain gauge arrangement and error reduction techniques were proposed to m... more In this study, a novel strain gauge arrangement and error reduction techniques were proposed to minimize crosstalk reading and simultaneously increase sensitivity on a decoupled six-axis force–moment (F/M) sensor. The calibration process that comprises the least squares method and error reduction techniques was implemented to obtain a robust decoupling matrix. A decoupling matrix is very crucial for minimizing error and crosstalk. A novel strain gauge arrangement that comprised double parallel strain gauges in the decoupled six-axis force–moment sensor was implemented to obtain high sensitivity. The experimental results revealed that the maximum calibration error, F/M sensor measurement error, and crosstalk readings were reduced to 3.91%, 1.78%, and 4.78%, respectively.
Defect is one of the most problems in car manufacturer especially in PT. XYZ. Paint Problem, Scra... more Defect is one of the most problems in car manufacturer especially in PT. XYZ. Paint Problem, Scratch, Dent, Shortage, Gap and Transition are some problems which usually found in the assembly process. Those problems are caused by many factors: shipment, logistic or even assembly process itself. Thus, there must be some ideas or ways to be developed to decrease total problems in the assembly process. The purpose of decreasing total defects in the assembly line is because there are too many cars park and wait at the rectification area to get repaired. Therefore, this research is one of many ways that can reduce the amount of defects in the cars by improving In-Line and Shadow Station Rework concept which means to repair or rework light defect such as small scratch and paint problem. In addition, there is supporting tools called B-Pillar protector to prevent damages at the most problematic part (B-Pillar) at the station which contributes the most damage. With this method and supporting tool, PT.XYZ hopes total defect cars at the end of assembly line will reduce.
In this study, a novel six-axis force/moment (F/M) sensor was developed. The sensor has a novel r... more In this study, a novel six-axis force/moment (F/M) sensor was developed. The sensor has a novel ring structure comprising a cross-beam elastic body with sliding and rotating mechanisms to achieve complete decoupling. The unique sliding and rotating mechanisms can reduce cross-talk effects caused by minimized structural interconnection. The forces Fx, Fy, and Fz and moments Mx, My, and Mz can be measured for the six-axis F/M sensors according to the elastic deformation of strain gauges attached to the cross beam. Herein, we provide detailed descriptions of the mathematical models, model idealizations, model creation, and the mechanical decoupling principle. The paper also presents a theoretical analysis of the strain based on Timoshenko beam theory and the subsequent validation of the analysis results through a comparison of the results with those obtained from a numerical analysis conducted using finite element analysis simulations. The sensor was subjected to experimental testing t...
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin
Remotely Operated Vehicle (ROV) adalah robot yang dapat bergerak di pesawat yang dikendalikan ole... more Remotely Operated Vehicle (ROV) adalah robot yang dapat bergerak di pesawat yang dikendalikan oleh manusia dari jarak jauh, yang dibuat oleh manusia untuk memfasilitasi pekerjaan manusia untuk eksploitasi bawah air. Penelitian tentang ROV dimaksudkan untuk memungkinkan ROV bergerak sesuai dengan pesanan. Gerakan pada ROV termasuk bergerak maju, mundur, belok kanan dan belok kiri. Sistem kontrol ROV dimulai dengan membuat perintah pada PC (Personal Computer) yang akan memerintahkan dari PC yang akan diterima oleh Mikrokontroler Arduino Uno untuk diteruskan ke L293D Shield Motor dan Modul Bluetooth HC-05 untuk menggerakkan Motor DC pada ROV. Data yang dibuat pada PC dalam bentuk data serial akan dipanggil dan dibaca oleh Mikrokontroler Arduino Uno dan akan dilakukan dengan Bluetooth pada VT SmartPhone, ROV dapat dicocokkan dengan instruksi dari aplikasi pada smartphone dan untuk memasok daya Arduino menggunakan Power Bank. Dari hasil pengujian RPM didapat bahwa nilai rata-rata dari se...
In this study, a novel strain gauge arrangement and error reduction techniques were proposed to m... more In this study, a novel strain gauge arrangement and error reduction techniques were proposed to minimize crosstalk reading and simultaneously increase sensitivity on a decoupled six-axis force–moment (F/M) sensor. The calibration process that comprises the least squares method and error reduction techniques was implemented to obtain a robust decoupling matrix. A decoupling matrix is very crucial for minimizing error and crosstalk. A novel strain gauge arrangement that comprised double parallel strain gauges in the decoupled six-axis force–moment sensor was implemented to obtain high sensitivity. The experimental results revealed that the maximum calibration error, F/M sensor measurement error, and crosstalk readings were reduced to 3.91%, 1.78%, and 4.78%, respectively.
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