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Optimasi Parameter Electromagnetic Regenerative Shock Absorber (ERSA) untuk Pemanenan Energi Listrik pada Suspensi Belakang Toyota Avanza Prayuda, Agus; Fernandez, Donny; Purwanto, Wawan; Sudarno Putra, Dwi; Hermanto, Jheri
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 4 No. 1 (2026): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtpvi.v4i1.231

Abstract

Pemanfaatan energi getaran pada suspensi kendaraan merupakan salah satu strategi untuk mengurangi ketergantungan terhadap sumber energi fosil. Penelitian ini bertujuan mengoptimalkan pembangkitan energi listrik Electromagnetic Regenerative Shock absorber (ERSA) pada suspensi belakang Toyota Avanza menggunakan metode Taguchi. Tiga faktor diuji, yaitu jumlah lilitan kumparan (1500–2500 lilitan), diameter kawat (0,2–0,4 mm), dan air gap (2–6 mm) dengan orthogonal array L9 dan kriteria larger-the-better terhadap tegangan keluaran. Hasil analisis S/N dan ANOVA menunjukkan bahwa jumlah lilitan dan diameter kawat berkontribusi masing-masing 55,10% dan 38,96% terhadap variasi tegangan, sedangkan pengaruh air gap relatif kecil. Kombinasi optimum A3B3C3 (2500 lilitan, kawat 0,4 mm, air gap 6 mm) menghasilkan tegangan verifikasi 5,30 V dengan galat 5% terhadap prediksi model. Temuan ini mengindikasikan bahwa ERSA berpotensi dimanfaatkan sebagai sistem energy harvesting berdaya rendah bila dikombinasikan dengan rangkaian penyimpan dan pengkondisi daya. Harvesting vibration energy from vehicle suspensions is a strategy to reduce dependence on fossil-fuel electricity. This study aims to optimize the electrical output of an Electromagnetic Regenerative Shock absorber (ERSA) installed on the rear suspension of a Toyota Avanza using the Taguchi method. Three control factors were investigated number of coil turns (1500–2500 turns), wire diameter (0.2–0.4 mm), and air gap (2–6 mm) arranged in an L9 orthogonal array with a larger-the-better criterion for output voltage. Signal-to-noise and ANOVA analyses indicate that coil turns and wire diameter contribute 55.10% and 38.96% of the voltage variation, whereas the influence of air gap is small. The optimal combination A3B3C3 (2500 turns, 0.4-mm wire, 6-mm air gap) yields a verification voltage of 5.30 V with a 5% error relative to the predicted response. These findings show that ERSA has potential as a low-power automotive energy-harvesting system when combined with power-conditioning and storage circuits.
Simulasi Kekuatan Rangka Trainer Sepeda Listrik sebagai Media Pembelajaran SMK dengan Metode Analisis Elemen Hingga Okvianda, Wendika; Arif, Ahmad; Purwanto, Wawan; Setiawan, M.Yasep; Hermanto, Jheri
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 3 No. 4 (2025): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtpvi.v3i4.366

Abstract

Penelitian ini menganalisis kekuatan struktural rangka trainer sepeda listrik sebagai media pembelajaran di SMK. Rangka dirancang dari pipa baja dan dianalisis menggunakan simulasi Finite Element Analysis pada perangkat lunak SolidWorks 2021. Tiga material dibandingkan, yaitu Baja Chromoly SAE 4130, Aluminium 6061-T6, dan Hi-Ten Steel (AISI 1015). Pembebanan statis 120 kg diterapkan pada titik dudukan pengendara, dengan tumpuan tetap pada titik hubung rangka sehingga diperoleh distribusi tegangan von Mises, displacement, dan safety factor. Hasil simulasi menunjukkan bahwa Baja Chromoly SAE 4130 memiliki kombinasi tegangan, deformasi, dan faktor keamanan paling baik, sedangkan Aluminium 6061-T6 menghasilkan displacement terbesar dan Hi-Ten Steel memiliki margin keamanan terendah. Nilai Safety Factor Minimum seluruh material masih kurang dari satu, sehingga desain rangka perlu dioptimasi. Temuan ini menjadi dasar pemilihan material dan perbaikan desain rangka trainer sepeda listrik di lingkungan pendidikan vokasi untuk mendukung pembelajaran berbasis praktik rekayasa. This study analyzes the structural strength of an electric bicycle trainer frame used as an instructional medium in vocational high schools. The frame is constructed from steel pipes and evaluated through Finite Element Analysis simulation using SolidWorks 2021. Three materials are compared, namely Chromoly Steel SAE 4130, Aluminum 6061-T6, and Hi-Ten Steel (AISI 1015). A static load of 120 kg is applied at the rider’s seat with fixed supports at frame joints to obtain the distribution of Von Mises Stress, displacement, and safety factor. The results indicate that Chromoly Steel SAE 4130 provides the most favorable combination of Stress, deformation, and structural safety, while Aluminum 6061-T6 exhibits the largest displacement and Hi-Ten Steel the lowest safety margin. The minimum safety factor of all materials is still below one, so the frame design requires optimization. These findings guide material selection and frame redesign for engineering practice–oriented vocational education.
Persiapan Uji Kompetensi Peserta Program Profesi Guru (UKPPPG) bagi Guru Otomotif pada MGMP Teknik Otomotif Sumatera Barat untuk Meningkatkan Profesionalisme dan Kompetensi Hidayat, Nuzul -; Purwanto, Wawan; Sugiarto, Toto
PAKAR Pendidikan Vol 24 No 1 (2026): Published in January 2026
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Competency Test for Teacher Professional Education Program Participants (UKPPPG) is an essential stage for assessing the professionalism of vocational teachers, including those in the field of automotive engineering. Adequate preparation is required to ensure that teachers meet competency standards while also improving the quality of learning in vocational schools. This study aims to describe the preparation strategies facilitated by the Automotive Engineering Subject Teacher Forum (MGMP) in West Sumatra and to identify the challenges teachers face in preparing for the UKPPPG. This research employed a descriptive qualitative approach with a case study design. The subjects consisted of 15 automotive teachers who were actively involved in MGMP activities and preparing for the UKPPPG. Data were collected through in-depth interviews, participatory observation, and document analysis. Thematic analysis was carried out through coding, theme identification, and verification using source and method triangulation. The findings indicate that MGMP preparation strategies include lesson plan development, microteaching, and exam discussions. These activities improved teachers’ pedagogical skills; however, limitations such as inadequate workshop facilities, conventional teaching materials, and the lack of computer-based simulations hindered optimal preparation. This study concludes that MGMP plays a significant role in preparing teachers for the UKPPPG, although its effectiveness remains limited to pedagogical aspects. A more comprehensive strategy involving curriculum renewal, access to updated materials, psychological support, and digital technology integration is needed.
Design and simulation of BLDC motor control using MATLAB simulink: A detailed approach Dwi Sudarno Putra; Wawan Purwanto; Risfendra Risfendra; Joel O. Abratiguin; Agus Baharudin; Thorikul Huda
Mechanical Engineering for Society and Industry Vol 5 No 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.13370

Abstract

Brushless Direct Current (BLDC) motors are increasingly utilized across various applications due to their high efficiency and reliability. However, their control requires precise handling, especially during the commutation process. This study presents a detailed simulation design for BLDC motor control using MATLAB Simulink, focusing on the Six-Step Commutation method and PID-based speed regulation. The methodology involves constructing an open-loop model to analyze commutation behavior, followed by a closed-loop system using PID controllers with automatic parameter tuning. The simulation demonstrates accurate replication of hall sensor signals, back-EMF waveforms, switching patterns, and motor responses. Results reveal that the PID controller effectively maintains target speed across varying reference inputs and load conditions, while phase current and electromagnetic torque increase proportionally with speed and load. Results confirm correct switching in open loop and show that, in closed loop, the controller maintains speed within ±2% of the target with brief, well-damped transients. Phase current and torque responses scale with speed and load, informing practical refinements (anti-windup, ripple mitigation, soft-commutation timing). The findings certify that simulation is a vital step to ensure functional logic and hardware readiness, minimizing risks and enhancing system performance prior to physical implementation.
Analisis Kombinasi Busi Platinum, Pengapian +2°, dan Water Injection terhadap Efisiensi Pembakaran dan Ketahanan Mesin Sepeda Motor Empat Langkah Viroza, Al-Thoriq; Purwanto, Wawan; Sugiarto, Toto; Arif, Ahmad; Juanda, Ahmad
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 4 No. 2 (2026): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtpvi.v4i2.346

Abstract

Penggunaan sepeda motor di Indonesia terus meningkat, memicu dua masalah utama: keterbatasan bahan bakar fosil dan meningkatnya polusi udara. Penelitian sebelumnya banyak menyoroti dampak lingkungan, namun aspek ketahanan mesin belum dikaji secara mendalam. Penelitian ini bertujuan menganalisis pengaruh kombinasi busi platinum, pengapian +2°, biogasoline E25, dan sistem Water Injection berbasis ultrasonic mist maker terhadap durabilitas mesin sepeda motor empat langkah. Metode eksperimen dilakukan dengan membandingkan kondisi standar (pertalite) dan perlakuan kombinasi selama 110 jam operasional. Hasil penelitian menunjukkan penurunan signifikan massa deposit karbon dari 680 mg menjadi 260 mg serta volume dari 378 mm³ menjadi 144 mm³, atau pengurangan lebih dari 61%. Temuan ini membuktikan bahwa kombinasi biogasoline dan Water Injection tidak hanya mengurangi pembentukan deposit karbon, tetapi juga berpotensi memperpanjang usia pakai mesin serta mendukung teknologi transportasi ramah lingkungan. The rapid increase in motorcycle use in Indonesia has created two major challenges: fossil fuel depletion and rising air pollution. While previous studies mainly focused on environmental impacts, engine durability remains underexplored. This study aims to evaluate the effects of combining platinum spark plugs, +2° ignition timing, E25 biogasoline, and a Water Injection system using an ultrasonic mist maker on the durability of four-stroke motorcycle engines. An experimental method was conducted by comparing standard conditions (pertalite) with the combined treatment over 110 hours of operation. Results indicated a significant reduction in carbon deposits, with mass decreasing from 680 mg to 260 mg and volume from 378 mm³ to 144 mm³, representing a reduction of over 61%. These findings highlight that the integration of biogasoline and Water Injection not only reduces carbon deposit formation but also extends engine lifespan and supports environmentally friendly transportation technologies.
Design of air conditioner (AC) system simulator on cars to improve student competence Hidayat, Nuzul; Ambiyar, Ambiyar; S, Wakhinuddin; Muslim, Muslim; Purwanto, Wawan
Jurnal Inovasi Teknologi Pendidikan Vol. 10 No. 1 (2023): March
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jitp.v10i1.55758

Abstract

The purpose of this study is to design a simulator for a car air conditioning system as a learning medium, so that the learning objectives cici4d can be achieved properly and in accordance with the expected competencies. This design uses an electric motor drive to drive the AC system compressor so that it is easier to operate and does not produce air pollution and is made with a design that can be moved easily by having sturdy wheels. The electric motor is also equipped with an inverter that can adjust the rotation of the motor as in the conditions of a real car engine. This research model uses Research and Development which includes the stages: problem analysis, seeking information, designing a model, validating the design, evaluating the model, testing the model, revising the model, wider testing, finalizing the design. The results obtained are the creation of an AC simulator that has been validated by experts in terms of cici4d media and material in the very feasible category, then from the user side with 25 respondents giving a value in the very feasible category for use in learning. The increase in competency occurred by 23.90% with a comparison of the pretest value with the posttest value.
Improvement of Teachers' Ability in Creating Modules with Information Technology on Vocational High Schools West Sumatera Hasan maksum; Martias Martias; Wawan Purwanto; Ahmad Arif
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 6 No 2 (2025): Vol 6 No 2 (2025) : AEEJ : Journal of Automotive Engineering and Vocational Educa
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v6i2.250

Abstract

The purpose of this analysis was to look at the teacher's ability to improve the teacher's ability to develop online-based teaching materials. The transition period between the pandemic and after requires strategies to ensure that the learning transition continues to provide students with comfort in their learning. The activity drew 30 people, all of whom were members of the West Sumatra Automotive Engineering Subject Teacher Consultation. They are divided into two categories: online and offline. The online module work created by the participants will be analyzed to determine the effectiveness of the learning and the teacher's ability to create online modules. As a result, participants can create effective learning modules. However, it takes longer for the presenters to teach those who are online how to complete the task.
Development of Short Tutorial Video Learning Media Instagram in the Motorcycle Chassis Maintenance Courses at Vocational High Schools Waruwu, Buala Jefriana; Jalinus, Nizwardi; Wulansari, Rizky Ema; Purwanto, Wawan
The Indonesian Journal of Computer Science Vol. 12 No. 4 (2023): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v12i4.3345

Abstract

This study uses a Research and Development (R&D) design, with the ASSURE development model. ASSURE development procedures, namely Analyze learner characteristics, State Standards and Objectives, Select Strategies, Technology, Media, and Materials, utilize media and materials, require learner participation, evaluate and revise. The data analysis technique used describes the validity, practicality, and effectiveness of the developed media. The product results obtained from this development research are video tutorial learning media. Based on the results of this study it was concluded that the developed media was declared "valid" by media experts with an average value of 0.77, and also declared "valid" by material experts with an average value of 0.85. The media developed was declared "practical" with a practicality value from the teacher's response with a result of 96.41% and a student response of 88.10%, and the video tutorials produced were effectively used with the results of a comparison of pretest and posttest learning outcomes seen from students' classical completeness of 100% and a gain score of 0.61 in the medium category. From the results of the research conducted, it can be concluded that short video tutorial learning media via Instagram are valid, practical and effective in the subject of maintaining motorcycle chassis in vocational high schools.
Regular maintenance training for electronic fuel injection systems at Vocational High School 1 Lembah Melintang Milana, Milana; Hidayat, Nuzul; Setiawan, Muhammad Yasep; Purwanto, Wawan; Arif, Ahmad
Community Empowerment Vol. 7 No. 12 (2022)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.8045

Abstract

Numerous obstacles must be overcome by vocational schools, particularly in the area of developing technical and practical knowledge. The provision of skills improvement and reskilling for teachers and students, especially in the field of Electronic Fuel Injection (EFI) in gasoline-powered vehicles, is the most fundamental issue at SMKN 1 Lembah Melintang that needs special attention, particularly for Automotive Light Vehicle Engineering (TKRO). The program's goal is to increase teachers' and students' proficiency in the use of tools and procedures for regular maintenance of the EFI system in cars. With a portion of 30:70, the participants will receive both theoretical and practical training. The results of the pretest and posttest show that this program has increased the competence and expertise of teachers and students. This is proved by significant growth from the prior competency in the use of tools and circular work steps, with student gains of 24% and teacher gains of 14%.
Development of E-Module Based on Discovery Learning to Improve Students' Learning Outcomes in PKKR Subject for Grade XI TKRO at State Vocational High School 1 Merbau Nur Kholistiyawatin; Hasan Maksum; Waskito; Wawan Purwanto
Jurnal Penelitian Pendidikan IPA Vol 9 No 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.5690

Abstract

This research aims to develop, measure the validity, assess the practicality, and evaluate the effectiveness of an e-module based on discovery learning to enhance the learning outcomes of 11th-grade students in Electrical Vehicle Maintenance subject. This study falls under the category of Research and Development, involving the development of an e-module for the topic of light vehicle electrical maintenance that is valid, practical, and effective using the discovery learning approach. The development of this e-module based on discovery learning follows the 4-D model, which includes defining, designing, developing, and disseminating stages. The validation results of the developed e-module based on discovery learning fall under the category of valid. The practicality assessment of the discovery learning-based module is classified as very good, and the effectiveness of the e-module based on discovery learning as a learning media indicates that this learning media is considered effective.
Co-Authors Abadi, Zainal Abadi Abdul Syukur Alfauzi Abimanyu, Bintang Abratiguin, Joel O. Adam Rasyid Sidiqi Agus Baharudin Agus Baharudin Agus Bahrudi1 Agusrianto, Rival Ahmad Abadi Arif Ahmad Arif Ahmad Arif Ahmad Ilham Ahmad Juanda Ahmad Junaidi Ahmad, Syalsa Billa Aken Derisman Al Ichlas Imran Alamsah Alexsandra, Alexsandra Alfiza Candra Ali Basrah Pulungan Alim Kusuma Ambiyar, Ambiyar Anang Baharuddin Sahaq Anbiya, Rafiqul Andre, Joni Andrizal Andrizal Andrizal Anreski, Vanny Ariadi, Mhd. Fajar Arif Brinaldi Arif, Ahmad Abadi Arya Adhi Pratama Asmar Yulastri Asni, Idrus Asri, Angeline Pramesha Athaya Atsiq Aulia Fajrin Rahmadani Nasution Azani, Magribfa Baehaqi Baharudin, Agus Bahrul Amin Binta Ustafiano Bintha Ustafiano Buala Jefriana Waruwu Budhi Prasetiyo Budi Utomo Wisesa Budi Utomo Wisesa Budi Waluyo Dedi Setiawan Dedi Setiawan Dedy Agustanto Dedy Irfan Desmiarni Desmiarni Diswanto Diswanto Donny Fernandez Dori Yuvenda Dwi Sudarno Putra Dwi Sudarno Putra edy susanto Eko Indrawan Eliza Baharo Enjela Dwi Ananda Erik Fernandes Ernal Nofiandri Erzeddin Alwi Fadel Muhammad Fakhri Fadhli Ranuharja Fadila Fadila, Fadila Fadli Randa Fahmi Rizal Fajar Hanifudin Afifi Faris Afif Fatahul Arifin Faulina, Faulina Faunesya, Faunesya Fauzan . Fauzan Fauzan Fauzan Zaharbaini Fauzan, Nauval Fazrin Hidayat Fazrin Hidayat Febiola, Aulia Azhari Febriansyah, Ilham Fenandes, Yose Firoj Mulani Ganefri Giatman, M Ginola Gunawan, Akmal Gustia Ramadhani Guswara, Ade Mukhfir Habibullah Hakim, Zaidan Ibnul Hamdani Hamdani Hamid Nasrullah Hamid Nasrullah Hamid Nasrullah Hanapi Hasan Hansi Effendi Haris Abizar, Haris Harris Fedriansyah Hasan Köten Hasan Maksum Hendra Dani Saputra Herlando Hernando, Fadli Huda, Asrul Ichsan Elfandy Ichsan Nasution Ichwan Yelfianhar Ikhwan, Aroma Ilham Febriansyah Ilham Ilham Ilham Putra Chaniago Ina Marlina Lubis Irma Yulia Basri Jerry Chih Tsong Su Jheri Hermanto Jin Cherng Shyu Jodhi Ananda Prima Joel O. Abratiguin Joumil Aidil Saifuddin Juri, Arfin Kathleen Ebora Padrigalan Koto, Rahmat Desman Krismadinata Krismadinata Kristine Mae Paboreal Dunque kustanrika, irma wirantina Kutni Lasyatta Syaifullah Latifah, Ulfi M Giatman M. Giatman M. Nasir M. Reza M. Sadly Firmansyah M. Yasep Setiawan Mahdi, Arisul Margana Margana Marlina Marlina Marliyati Marliyati Marliyati Marliyati Martias Martias Martias Martias Martias Masykur Masykur Mayuliardi, Mayuliardi Meri Azmi Milana Milana Muhamad Arpan Muhammad Dava Lencana Muhammad Febriyana Ilham Pratama Muhammad Fikri Muhammad Latifur Rochman Muhammad Mukhbit Nurdin Muhammad Nasir Muhammad Ridwan Muhammad Shiddiq Muhammad Sofyan Muhammad Yanda Muhammad Yasep Setiawan Muhibbudin Muhibbudin Muji Setiyo Mukhlidi Musykir Mulyanto Mulyanto Muslikhin Muslim Muslim Nanang Apriandi Nanda Farhan Mardhatillah Narti, Deswira Nenden Azka Zakhiha Nizwardi Jalinus Nizwardi Zalinus Nofiandri, Ernal Nofrial, Nofi Novia Hendra Nur Kholistiyawatin Nurhasan Syah Nurindah Dwiyani Nursyafti, Yolana Nuzul Hidayat, Nuzul Okin Johepan Handanu Okvianda, Wendika Ori Kurniawan Pahlevi, Reza Trio Pratama Saputra, Agung Prayuda, Agus Putra, Benny Adeka Putra, Rido Putra, Rizky Kurnia R. Chandra R. Chandra Rahmad Rahmad Rahmadani Rahmadani Rahmahtrisilvia Rahmahtrisilvia Rahmi, Salsabila Tri Rahul Fuaddi Ramadhan, Miftahuddin Ramadhani, Gustia Ramadhani, Witri Refdinal, Refdinal Remon Lapisa Remon Lapisa Remon Lapisa Ridho Wahyudi Ridwan Rifdarmon Rifdarmon, Rifdarmon Rifdarmon, Rifdarmon Risfendra Risfendra Risha Febriyanti Rizky Ema Wulansari RR. Ella Evrita Hestiandari Rudi Sandra Arifin S.Pd, Zulfadli Sa'adah, Agis Amelia Saifudin Saifudin Saifudin Salsabila Tri Rahmi Santosa, Tomi Apra Saputra, Riko Sari, Yetti Anita Septiantar Tebe Nursaputro Setiawan, M.Yasep Setiawan, Yasep Siman, Siman Sofi, Abdullah Su, Jerry Chih Tsong Sugiarto, Toto Sugiarto, Toto Suharry Supriyo Supriyo Syahril Syahril Syahrul Huda Syalsa Billa Ahmad Syalsa Billa Ahmad Thorikul Huda Toto Sugiarto Toto Sugiarto Toto Sugiarto Toto Sugiarto Toto Sugiarto Tung-Kwan Liu Ustafiano, Bintha Vanny Anreski Veby Yansyah, Wahyu Danang Viroza, Al-Thoriq WAGINO Wagino Wahyu Danang Veby Yansyah Wahyu Sulistiyo Wahyudi Pratama Wahyuningtias, Asri Wakhinuddin Wakhinuddin S Wakhinuddin S Wakhinuddin Wakhinuddin Wakhinuddin Wakhinuddin, Wakhinuddin Wanda Afnison Warsono Putra Waruwu, Buala Jefriana Waskito Waskito Waskito, Waskito Welman Saputra Weny Late Afriza Wulansari, Rizky Ema Yanda Septian Putra Yeka Hendriyani Yodi Agus Pratama Yoga Guntur Sampurno Yolana Nursyafti Yose Fenandes Yuliana Yuliana Yuliana Yuliana Yuliandi, Andri Yuniswar, Yuniswar Yusuf Dewantoro Herlambang Yusuf Dewantoro Herlambang Zainal Abadi Abadi Zakki Fuadi Emzain Zikri Fauzi Zikri Zikri ‘Ariqsyah, Muhammad