RENOVATION OF NMIJ'S 5 MN HYDRAULIC AMPLIFICATION TYPE FORCE STANDARD MACHINE | Zendy

Toshiyuki Hayashi | Zendy; Hiroshi Maejima | Zendy; Kazunaga Ueda | Zendy; MITSUHARU AOKITSU | Zendy

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RENOVATION OF NMIJ'S 5 MN HYDRAULIC AMPLIFICATION TYPE FORCE STANDARD MACHINE

Author(s) -

Toshiyuki Hayashi,

Hiroshi Maejima,

Kazunaga Ueda,

MITSUHARU AOKITSU

Publication year - 2013

Publication title -

international journal of modern physics conference series

Language(s) - English

Resource type - Journals

ISSN - 2010-1945

DOI - 10.1142/s2010194513600112

Subject(s) - calibration , repeatability , hydraulic cylinder , programmable logic controller , transducer , pressure sensor , hydraulic pressure , mechanical engineering , controller (irrigation) , engineering , materials science , acoustics , control theory (sociology) , computer science , physics , electrical engineering , chemistry , control (management) , chromatography , quantum mechanics , artificial intelligence , operating system , agronomy , biology

The 5 MN hydraulic amplification type force standard machine was renovated by replacing its hydraulic pressure control system, measuring ram and cylinder. For re-evaluation of uncertainty of force amplification factor, diameters of the main and mearsuring rams and cylinders were re-measured. A programmable logic controller with a personal computer is used to control the weight motion and the valve actuation, to monitor various kinds of sensors output, and to record readings of a force transducer under calibration. Fluctuation of calibration force was suppressed by using a quartz-resonance type pressure gauge, and measurement repeatability was improved to some extent. However, there remains room for improvement to further stabilize the calibration force by modifying the measuring ram.

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