Rancang Bangun Sistem Suspensi Semi Aktif Pada Sepeda Motor Monoshock

Ananda, Fanoki Natri (2024) Rancang Bangun Sistem Suspensi Semi Aktif Pada Sepeda Motor Monoshock. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem suspensi memiliki peranan penting dalam meredam getaran dan kejutan yang disebabkan oleh profil permukaan jalan yang tidak rata sehingga getaran tersebut tidak sampai ke bodi (sprung). Sistem Suspensi sangat berpengaruh terhadap kenyamanan kendaraan. Semakin tinggi percepatan bodi kendaraan (sprung mass) semakin berkurang kenyamanannya, demikian pula semakin rendah percepatan bodi kendaraan maka semakin tinggi tingkat kenyamanan. Tingkat kenyamanan suatu kendaraan memiliki standar dalam ISO 2631. Jika percepatan kurang dari 0,315 m/s². dikatakan kendaraan sangat nyaman. Agar suspensi mampu merespon gangguan terutama pada profil jalan maka dilakukan modifikasi menjadi suspensi semi aktif. Sebagaimana dalam proyek akhir ini suspensi pasif pada kendaraan Jupiter MX dimodifikasi menjadi suspensi semi aktif. Komponen utama sistem suspensi semi aktif ini adalah aktuator linier elektrik, sensor akselerometer ADXL 345, Arduino nano, dan BTS7960 serta komponen awal dari suspensi pasif yaitu pegas dan peredam/damper. Untuk merealisasikan sistem ini dilakukan studi literatur mengenai sistem kontrol dan sistem supensi, spesifikasi sensor beserta dengan penempatannya. Pada sistem suspensi semi-aktif ini, sensor akselerometer bertugas untuk mendeteksi gangguan pada kendaraan. Sensor tersebut membaca nilai percepatan bodi yang terjadi, lalu sensor tersebut mengirim informasi kepada Arduino Nano. Lalu Arduino akan mengolah informasi tersebut dan membandingkan hasil bacaan dengan set point. Jika hasil bacaan melebihi set point maka Arduino nano akan memberikam perintah kepada aktuator linier untuk membantu suspensi dalam meredam getaran. Pengujian dilakukan pada jalan aspal kering melintasi speed bump, speed hump, dan speed table dengan kecepatan 45 km/jam. Nilai RMS yang dihasilkan oleh sistem suspensi semi-aktif adalah 0,363 m/s², 0,483 m/s², dan 0,4001 m/s². Berdasarkan hasil pengujian, nilai RMS pada sistem suspensi semi-aktif masuk dalam kategori “Nyaman” dengan rentang 0.315 m/s² – 0.63 m/s² menurut standar ISO 2631
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The suspension system plays a crucial role in dampening vibrations and shocks caused by uneven road surfaces, preventing these vibrations from reaching the sprung mass (vehicle body). The suspension system significantly influences the comfort of a vehicle. As the acceleration of the vehicle body (sprung mass) increases, the comfort decreases, and conversely, a lower acceleration leads to higher comfort levels. The comfort level of a vehicle adheres to the ISO 2631 standard, where a vehicle is considered very comfortable if the acceleration is less than 0.315 m/s². To enable the suspension to respond to disturbances, especially on uneven road profiles, modifications are made to transform it into a semi-active suspension. In this final project, the passive suspension of the Jupiter MX vehicle is modified into a semi-active suspension. The main components of this semi-active suspension system include an electric linear actuator, an ADXL 345 accelerometer sensor, Arduino Nano, BTS7960, and the initial components of the passive suspension, namely springs and dampers. To realize this system, a literature study is conducted on control systems and suspension systems, along with specifications for sensors and their placement. In the semi-active suspension system, the accelerometer sensor detects disturbances in the vehicle. The sensor reads the acceleration values of the body, and then it sends this information to Arduino Nano. Arduino processes this information, compares it with the set point, and if the reading exceeds the set point, Arduino Nano commands the linear actuator to assist the suspension in dampening vibrations. Testing is carried out on dry asphalt roads, traversing speed bumps, speed humps, and speed tables at a speed of 45 km/h. The Root Mean Square (RMS) values produced by the semi-active suspension system are 0.363 m/s², 0.483 m/s², and 0.4001 m/s². Based on the test results, the RMS values of the semi-active suspension system fall within the “comfortable” category, with a range of 0.315 m/s² – 0.63 m/s² according to the ISO 2631 standard.

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	Sistem Suspensi, Kenyamanan, Sprung, Suspension System, Comfort, Sprung
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL257 Springs and suspension
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Fanoki Natri Ananda
Date Deposited:	12 Feb 2024 02:24
Last Modified:	12 Feb 2024 02:24
URI:	http://repository.its.ac.id/id/eprint/106817

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