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ITS » Undergraduate Theses » Teknik Mesin
Posted by ida at 18/01/2010 16:11:53  •  4505 Views


RANCANG BANGUN SISTEM KONTROL SUSPENSI SEMI AKTIF BERBASISKAN FUZZY LOGIC

DESIGN OF SEMI ACTIVE SUSPENSION CONTROL SYSTEM BASED ON FUZZY LOGIC

Author :
Bahri, Ariful 




ABSTRAK

Pada zaman sekarang ini metode fuzzy logic sudah banyak diaplikasikan dalam dunia kontrol termasuk juga dalam dunia otomotif. Sistem suspensi semi aktif akan sangat baik jika dimodelkan dalam basis fuzzy logic. Sistem suspensi yang digunakan dalam tugas akhir ini adalah sistem suspensi semi aktif sederhana dengan menggunakan multistate damper. Dalam tugas akhir ini sistem kontrol suspensi semi aktif sederhana akan dimodelkan dengan basis fuzzy logic serta diuji respon dinamiknya. Dengan fuzzy logic kendala-kendala yang ditemukan dalam metode konvensional seperti ketidakpastian dan ketidakakuratan pada model dapat teratasi. Sistem kontrol yang berbasiskan fuzzy logic tidak membutuhkan persamaan matematis yang rumit namun memilki tingkat keakuratan yang baik. Ada tiga posisi orifice didalam damper yang memilki konstanta redaman yang berbeda-beda yaitu soft medium dan hard. Sistem suspensi ini dikontrol dengan suatu sistem kontrol dengan menggunakan mikrokontroler yang berbasis fuzzy logic. Parameter input yang digunakan sebagai membership function dalam fuzzy logic adalah frekuensi dan amplitudo. Tiap membership function memiliki tiga batasan yaitu low medium dan large. Pengujian dilakukan untuk mengetahui reduksi amplitudo dan kecepatan redaman yang terjadi dengan menggunakan sistem kontrol. Pada range pengujian 1 hz 4 hz posisi orifice medium memberi respon yang paling baik dalam hal mereduksi amplitudo dan kecepatan redaman. Untuk posisi soft mereduksi amplitudo 0.15 cm dan medium mereduksi amplitudo 0.2 cm. Dengan adanya sistem kontrol yang berbasis fuzzy logic ini diharapkan dapat diaplikasikan secara langsung kedalam kendaraan sehingga mampu untuk meningkatkan kestabilan dan kenyamanan dalam berkendara.


ABSTRACT

Now a days the fuzzy logic method has a lot of applications in the world of control including in the automotive industry. A semi active suspension is more useful if controlled using fuzzy logic method. This project uses a semi active suspension system with multistage damper. The semi active suspension system that is used in this project has variety of damper constants. There are three orifice positions inside the damper with three different damper constants soft medium and hard. The semi active suspension system is controlled by control system using microcontroller based on fuzzy logic. Input parameters for membership function in fuzzy logic are amplitudes and frequency. Each membership function parameter has three different levels they are low medium and large. In this research the control system is used to reduce the amplitude and damping velocity medium position give a better response than the others in 1 Hz until 4 Hz. Soft position can reduce 0.15 cm amplitude and medium position an reduce 0.2 cm amplitude. This control system which is based on Fuzzy Logic were expected to be directly applicated in the vehicle suspension system so that can improve the stability and comfortability in vehicle driving Key



KeywordsSuspensi semi aktif, damper, fuzzy logic, membership function
 
Subject:  "Automatic control Fuzzy logic Automobiles--springs and suspension--automatic control"
Contributor
  1. Ir. Yusuf Kaelani, MSc. E
Date Create: 18/01/2010
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-Undergraduate-3100006026020
Collection ID: 3100006026020
Call Number: RSM 629.243 Bah r


Source
Undergraduate Theses of MECHANICAL ENGINEERING Industrial Technology Faculty, RSM 629.243 Bah r, 2006

Coverage
ITS Community Only

Rights
Copyright @2006 by ITS Library. This p ublication is protected by copyright and permission should be obtained from the ITS Library prior to any prohibited reproduction, storage in a retrievel system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to ITS Library




[ Download - Open Access ]

  1.  ITS-Undergraduate-8213-2100109015-kesimpulan.pdf - 18 KB




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