FATKHURROKHMAN, ABDILLAH (2024) ANALISIS GETARAN PADA KOIL MOTOR TORAK 4 SILINDER DENGAN METODE HILBERT HUANG TRANSFORM. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The proliferation of technology and mobility of vehicles has transformed their role from mere means of transportation to personal spaces equipped with advanced features. However, damage to vital components such as the coil can adversely affect vehicle performance and driver safety. Vibration analysis is an effective way to detect problems in the coil. It involves specialized sensors that measure the vibrations of the vehicle while in motion. This vibration data is then analyzed using tools such as Fast Fourier Transform (FFT) and Hilbert Huang Transform (HHT). This research focuses on analyzing coil vibration in a 4-stroke piston motor using the FFT and HHT methods at engine speeds of 900 rpm, 1500 rpm, and 3500 rpm. The results show the frequency and amplitude of coil vibration at various engine speeds. Analysis with HHT can identify damage to the piston motor and show the transition from stable to unstable state during engine speed variation. Damage to the coil such as leakage can cause imbalance at the rotation speed. For example, at 900 rpm, a frequency of 2x rpm is detected, while at 1500 rpm, 1x rpm is seen, indicating a possible misalignment. Keywords: Four Stroke Motorbike Engine, Coil, Fast Fourier Transform, Hilbert Huang Transform Method. Perkembangnya teknologi dan mobilitas kendaraan telah mengubah peran mereka dari sekadar sarana transportasi menjadi ruang pribadi yang dilengkapi dengan fitur canggih. Namun, kerusakan pada komponen vital seperti koil dapat berdampak buruk pada kinerja kendaraan dan keselamatan pengemudi. Analisis getaran adalah cara efektif untuk mendeteksi masalah pada koil. Ini melibatkan sensor khusus yang mengukur getaran kendaraan saat bergerak. Data getaran ini kemudian dianalisis menggunakan alat seperti Fast Fourier Transform (FFT) dan Hilbert Huang Transform (HHT). Penelitian ini fokus pada analisis getaran koil pada motor torak 4 tak dengan menggunakan metode FFT dan HHT pada putaran mesin 900 rpm, 1500 rpm, dan 3500 rpm. Hasil penelitian menunjukkan frekuensi dan amplitudo getaran koil pada berbagai putaran mesin. Analisis dengan HHT dapat mengidentifikasi kerusakan pada motor torak dan menunjukkan transisi dari keadaan stabil ke tidak stabil selama variasi kecepatan mesin. Kerusakan pada koil seperti kebocoran dapat menyebabkan ketidakseimbangan pada kecepatan putaran. Misalnya, pada 900 rpm, terdeteksi frekuensi 2x rpm, sementara pada 1500 rpm, terlihat 1x rpm, menandakan kemungkinan misalignment. Kata Kunci: Motor 4 Tak, Coil, Fast Fourier Transform, Metode Hilbert Huang Transform.
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