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<p>Accurate measurement of highly standard masses is the most urgent need in mass metrology. This article concerns the design and control of a new design of a low-cost multi-position series of mass carrier for automatically calibrating standard masses ranging from 10 <i>g</i> up to 1000 <i>g</i>. It has 16 positions for standard and test masses. The system has only two motions. The first is for the x-axis, while the other is for the y-axis. These motions are sufficient to complete the calibration procedures successfully. Finite Element Analysis (FEA) confirmed the structural integrity of both the frame and multi-position mass&#xa0;carrier, demonstrating stresses well below material yield limits and minimal displacements. A detailed description of the system and its preliminary design are presented. The motors’ sizes are selected carefully to verify their stability during the measuring process. Then, the control design is applied to automate the system using a Graphic User Interface (GUI). Experimental works are carried out on mass standards to validate the design and control. The expanded uncertainty of measurement is 0.02 <i>mg</i> up to 0.09 <i>mg</i> at a confidence level of <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(95\%\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>95</mn> <mo>%</mo> </mrow> </math></EquationSource> </InlineEquation> with a coverage factor of 2 for 10 <i>g</i> to 1000 <i>g</i>, respectively. According to the obtained results, the new system proves its feasibility study based on the design, control, and calibration results.</p>

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Design and Control of The New Multi-Position Series of Mass Carrier up to 1 kg

  • 期刊论文

  • 发表日期：

    2025年11月26日

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  • B. M. Sayed,
  • Ahmed D. S. Ahmed,
  • Omar Zahra

摘要

Accurate measurement of highly standard masses is the most urgent need in mass metrology. This article concerns the design and control of a new design of a low-cost multi-position series of mass carrier for automatically calibrating standard masses ranging from 10 g up to 1000 g. It has 16 positions for standard and test masses. The system has only two motions. The first is for the x-axis, while the other is for the y-axis. These motions are sufficient to complete the calibration procedures successfully. Finite Element Analysis (FEA) confirmed the structural integrity of both the frame and multi-position mass carrier, demonstrating stresses well below material yield limits and minimal displacements. A detailed description of the system and its preliminary design are presented. The motors’ sizes are selected carefully to verify their stability during the measuring process. Then, the control design is applied to automate the system using a Graphic User Interface (GUI). Experimental works are carried out on mass standards to validate the design and control. The expanded uncertainty of measurement is 0.02 mg up to 0.09 mg at a confidence level of \(95\%\) 95 % with a coverage factor of 2 for 10 g to 1000 g, respectively. According to the obtained results, the new system proves its feasibility study based on the design, control, and calibration results.