*Kimpei Ichiyanagi¹, Takayuki Uesugi¹, Rusmawan Suwarman², Halda Aditya Belgaman³, Masahiro TANOUE⁴ (1.Kumamoto University, 2.Bandung Institute of Technology, 3.Badan Pengkajian dan Penerapan Teknologi, 4.Shibaura Institute of Technology)