Article

Pengujian Prototip Suspensi Aktif Tegar (Robust) Model Seperempat Kendaraan

ITB Journal of Science 01/2004; 36:83-95. DOI: 10.5614/itbj.sci.2004.36.1.6

ABSTRACT Sari. Pada makalah ini akan dipaparkan hasil pengujian performansi dari sistem suspensi aktif tegar yang telah dibuat. Pengujian dilakukan dengan memberikan sinyal ganguan berupa sinyal sinusoida dengan amplituda sebesar 3 mm puncak ke puncak, dan frekuensi eksitasinya diubah-ubah mulai dari 1 Hz sampai dengan 9 Hz. Hasil pengujian menunjukkan bahwa sistem suspensi aktif yang dibuat memberikan percepatan massa sprung yang lebih kecil dibandingkan dengan sistem suspensi pasifnya, dalam rentang frekuensi 1 Hz sampai dengan 4 Hz. Pada rentang frekuensi 5 Hz sampai dengan 9 Hz sistem suspensi aktif memberikan harga percepatan vertikal massa sprung lebih besar dari sistem suspensi pasifnya. Disamping itu, dalam seluruh rentang frekuensi pengujian terhitung mulai 1 Hz hingga 9 Hz, percepatan massa unsprung sistem suspensi aktif yang dibuat lebih kecil dibandingkan dengan sistem suspensi pasifnya. Kata Kunci: model seperempat kendaraan; sistem suspensi aktif; teori kontrol tegar. Abstract. In this paper the result of the performance test of a robust-active suspension system will be presented. The performance of the developed suspension system was evaluated under a sinusoidal road disturbance with amplitude of 3 mm (peak to peak), and within the frequency test range of 1 – 9 Hz. The experimental results show that in the frequency test range of 1 – 4 Hz, the sprung mass acceleration of the active suspension is smaller than that of the passive suspension. However, the sprung mass acceleration of the active suspension is higher than that of the passive one, in the frequency test range of 5 – 9 Hz. Moreover, the unsprung mass acceleration of the active suspension is smaller than its passive counterpart in all of the frequency test range 1 – 9 Hz.

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