Analisa Pengaruh Panjang Linkage Terhadap Respon Series Active Variable Geometry Suspension (SAVGS)

Prayogo, Rizal Bagus (2021) Analisa Pengaruh Panjang Linkage Terhadap Respon Series Active Variable Geometry Suspension (SAVGS). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Suspensi merupakan komponen penting dalam kendaraan bermotor, karena berperan dalam menjaga kenyamanan dan keamanan saat berkendara. Sistem suspensi yang umum digunakan adalah passive suspension. Sebuah gagasan baru diperkenalkan, Series Active Variable Geometry Suspension (SAVGS), dimana sistem suspensi ini memiliki performa yang lebih baik dibandingkan dengan passive suspension serta dapat mengatasi kelemahan dari active suspension. Penelitian terus dilakukan guna meningkatkan performa dari SAVGS. Pada penelitian ini akan dibahas pengaruh panjang linkage (single link) terhadap performa kendaraan khususnya kenyamanan dan stabilitas.
Pada penelitian ini SAVGS diaplikasikan pada sistem suspensi jenis double wishbone dengan variasi panjang single link 5 – 20mm. Dinamika sistem suspensi kendaraan dimodelkan sebagai quarter-car, dimana pengaruh panjang single link dianalisa dalam bentuk k_eq dan c_eq. Model tersebut digunakan untuk mendesain sistem kendali (LQR). Performa sistem kendali diuji pada model nonlinear yang dibuat dengan menggunakan “Simscape Multibody” dengan diberikan berbagai road disturbance. Road disturbance terdiri atas bump, dan rumble strip road. Respon tiap konfigurasi akan dibandingkan untuk mengetahui peningkatan performa kendaraan.
Hasil simulasi menunjukkan bahwa semakin panjang single link yang digunakan maka kenyamanan dan keamanan serta stabilitas dari kendaraan semakin meningkat. Untuk kenyamanan
peningkatan performa antara 4.8%-12.4%. Sedangkan pada stabilitas kendaraan meningkat antara 3.5%-12.4%. Dari 4 konfigurasi yang dilakukan simulasi, konfigurasi 4 memberikan peningkatan paling besar akan tetapi power yang dibutuhkan meningkat 6 kali lebih besar. Namun dalam penelitian ini, actuator yang digunakan masih mampu untuk menggerakan single link. Berdasarkan analisa hasil simulasi, membuktikan bahwasannya Series Active Variable Geometry Suspension (SAVGS) cukup baik untuk diimplementasikan dalam kendaraan.
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Suspension is an important component in a vehicle because it plays a role in maintaining comfortability and safety while driving. The suspension system that is commonly used is passive suspension. A new idea was introduced, Series Active Variable Geometry Suspension (SAVGS), where this suspension system has better performance than passive suspension and can overcome the weaknesses of active suspension. Research continues to improve the performance of the SAVGS. This study will discuss the effect of linkage length (single link) on vehicle performance, especially comfortability and stability.
In this research SAVGS is applied to double wishbone suspension system with single link length variations of 5 – 20mm. The dynamics of the vehicle suspension system is modeled as a quarter-car, where the effect of single link length is analyzed in the form of k_eq and c_eq. The model is used to design the control system (LQR). The performance of the control system was tested on a nonlinear model made using “Simscape Multibody” with various road disturbances given. Road disturbance consists of bump, and rumble strip road. The response of each configuration will be compared to determine the increase in vehicle performance.
The simulation results show that the longer the single link used, comfort and stability on the vehicle increasing. At road comfort, the performance improvements between 4.8%-12.4%. While the stability of vehicle improvements between 3.5%-12.4%. The 4 configurations that were simulated, configuration 4
provides the greatest increases but the power required is 6 times greater. However, the actuator used is still capable to drive a single link. Based on the simulation results analysis, it proves that SAVGS is good enough to be implemented in vehicles.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	LQR, Quarter-car, SAVGS, Simscape Multibody, Suspension LQR, Quarter-car, SAVGS, Simscape Multibody, Suspension
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control. T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL257 Springs and suspension T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL521.3 Automatic Control
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Rizal Bagus Prayogo
Date Deposited:	06 Aug 2021 03:31
Last Modified:	06 Aug 2021 03:31
URI:	http://repository.its.ac.id/id/eprint/84976

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