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Optimal tracking control in photovoltaic using linear quadratic tracking Mohd Iqbal Muttaqin; Said Munzir; Marwan Ramli; Muhammad Ikhwan
Journal of Aceh Physics Society Volume 11, Number 1, January 2022
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v11i1.20381

Abstrak. Penelitian ini membahas tentang masalah penjejak pasif photovoltaic terhadap posisi matahari secara optimal. Penjejak pasif digunakan ketika penjejak aktif tidak berfungsi. Penjejak pasif menggunakan perhitungan matematika yang rumit untuk penerapannya. Metode yang digunakan pada penelitian ini adalah linear quadratic tracking. Linear quadratic tracking merupakan metode analitik yang mengkonstruksi sistem persamaan secara kontrol optimal. Penjejakan oleh linear quadratic tracking menghasilkan risetime, mencapai settling time, dan perhitungan error dari Mean absolute error (MAE). Artinya, metode linear quadratic tracking yang diterapkan pada PV dapat menjejak cahaya matahari secara pasif dengan sangat cepat dan akurat. Simulasi yang dilakukan terhadap massa panel surya yang bervariasi ternyata dapat mempengaruhi tegangan, arus listrik, dan kecepatan sudut dari PV. Semakin meningkat massa dari panel surya mengakibatkan tegangan dan arus listrik juga meningkat dan respon kecepatan sudut mencapai posisi referensi cenderung lama. Abstract. This research discusses the problem of optimal passive photovoltaic tracking trajectory of the sun. The passive tracker is used when the active tracker does not work. The passive tracker uses complex mathematical calculations to implement it. The method used in this research is linear quadratic tracking. Linear quadratic tracking is an analytical method that constructs an optimal control system of equations. Tracing by linear quadratic produces rise time, reaches settling time, and error (MAE). This means that the linear quadratic tracking method for PV can track the sun trajectory very quickly and the level of accuracy is very accurate. Simulations carried out on various masses turned out to be able to affect the voltage, electric current, and angular velocity of the PV. The increasing mass of the solar panels results in increased voltage and electric current and the angular velocity response reaching the reference position tends to be longer.

Time Series Data Analysis in Forecasting Educated Unemployment Rate in Aceh Province Winny Dian Safitri; Muhammad Ikhwan; Nadlia Ariyati; Rajul Hakim
Maqrizi: Journal of Economics and Islamic Economics Vol 2 No 2 (2022): MAQRIZI: JOURNAL OF ECONOMICS AND ISLAMIC ECONOMICS
Publisher : Program Studi Ekonomi Syariah, Fakultas Ekonomi dan Bisnis Islam Institut Agama Islam Negeri Manado

Educated unemployment is the most important problem that must be solved by the government. Studies related to unemployment are very interesting to study. This study examines the relationship between educated unemployment in Aceh Province. The purpose of this study is to examine the modeling of educated unemployment in Aceh Province using secondary data. Forecasting was carried out to predict unemployment in Aceh Province in the period until 2030. The results of this study show that Aceh's educated unemployment rate continues to increase. The recommendations of this study are expected by the government to make improvements in various development sectors, especially programs that rely on improving human resources in order to change the labor recruitment system in Aceh Province to avoid a decrease in the unemployment rate in Aceh Province.

SISTEM KENDALI PROPORSIONAL, INTEGRAL, DAN DERIVATIF (PID) PADA PERSAMAAN PANAS Muhammad Ikhwan; Said Munzir; Nurmaulidar Nurmaulidar
Jurnal Natural Volume 16, Number 2, September 2016
Publisher : Universitas Syiah Kuala

This research showed the application of Proportional, Integral, and Derivative (PID) control system on heat equations that has non-integer ordered solutions on Laplace domain. Zala tuning method and Ziegler-Nichols method; which is ultimate cycle and process reaction method, are used to determine the value of Kp, Ti and Td as constants in PID to maintain the temperature of 1oC on the position of x = 3 m from the heat source with k = 0,042 m2s-1 diffusivity. Based on the results, there were ten systems that were closest in the desired criteria. With regards to overshoot and the time taken to reach the stable position, therefore the ten systems that are produced have not many differences in strengths and weaknesses.

Optimization of fuzzy entropy on solar panel’s motor MUHAMMAD IKHWAN; MARWAN RAMLI; MARDLIJAH MARDLIJAH
Jurnal Natural Volume 22 Number 1, February 2022
Publisher : Universitas Syiah Kuala

Renewable energy has been in great demand by the public, even some countries have set regulations for substitution and transition from fossil energy to renewable energy. This study aims to modify the fuzzy control system with a metaheuristic method, namely fuzzy entropy. The entropy value of the fuzzy set in the previous stage becomes the basis for calculating the foot of uncertainty in the new fuzzy set. This process makes the entropy method parallel to other optimization methods that have been carried out on fuzzy control systems. The results obtained indicate that the modified fuzzy control system successfully controls the angle and angular velocity of the solar panel. The error value shown is very small and the time to reach stability is below 5 s. This is a rapid development of several previous studies. The modified system has no overshoot and steady state error below 1%. Based on these results, entropy research can be developed again by changing the fuzzy set to a more complex form.

Pendidikan Kesehatan Bencana (Disaster Health Education) dan Pemetaan Wilayah Risiko Bencana dengan Metode Town Watching bagi Kader Kesehatan Siaga Bencana dan Masyarakat di Wilayah Kerja Kecamatan Meuraxa Kota Banda Aceh Yeni Rimadeni; Rizki Wan Oktabina; Afdhal Afdhal; Berwi Fazri Pamudi; Erlangga Galih Zulva Nugroho; Eka Oktarina Riani; Muhammad Ikhwan
Jurnal Kreativitas Pengabdian Kepada Masyarakat (PKM) Vol 6, No 12 (2023): Volume 6 No 12 2023
Publisher : Universitas Malahayati Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jkpm.v6i12.12356

ABSTRAK Kondisi indonesia rentan terhadap gempa bumi, tsunami letusan gunung api dan jenis- jenis bencana geologi lain. Kecamatan Meuraxa merupakan salah satu kecamatan di Kota Banda Aceh yang berada di ujung pulau sumatera. Wilayah ini telah terdampak langsung kejadian gempa dan tsunami tahun 2004 silam. Kecamatan tersebut sering mengalami kejadian angin puting beliung, badai dan abrasi yang merusak beberapa bangunan infrastruktur dan mengancam jiwa masyarakat setempat dan juga kejadian wabah penyakit seperti Covid 19, demam berdarah dan beberapa penyakit lainnya. Tujuan kegiatan meningkatkan kesadaran masyarakat yaitu kader kesehatan siaga bencana terhadap penanggulangan bencana, Mengidentifikasi kerentanan lingkungan dan sekitarnya, mengidentifikasi kapasitas/sumberdaya yang dimiliki masyarakat yang dapat digunakan ketika terjadi bencana, Mengidentifikasi permasalahan utama di lingkungan masyarakat serta menemukan solusi dari permasalahan tersebut dan adanya peta risiko bencana kecamatan meuraxa. Metode pengabdian ini menggunakan metode town watching dan juga dilakukan pengukuran pengetahuan terhadap pelatihan yang di berikan melalui pre dan post test. Khalayak sasaran dalam kegiatan pengabdian ini adalah kader kesehatan siaga bencana berjumlah 34 orang. Hasil pengabdian masyarakat di Kecamatan Meuraxa Kota Banda Aceh di peroleh hasil pengetahuan sebelum dan sesudah pelatihan kepada kader kesehatan siaga bencana. Sebelumnya memiliki nilai rata-rata 5,7 menjadi 9.8. Perbedaan nilai rata-rata saat pre dan post test bermakna secara statistik, dimana nilai p value < α (0,000<0.05). Selain itu juga kegiatan pengabdian masyarakat ini juga menghasilkan sebuah peta sarana pendukung penanggulangan bencana. Masukan dan saran kepada pihak mitra agar kegiatan ini tetap berkelanjutan minimal adanya pelatihan berkala dengan berkoordinasi dengan mitra kesehatan dan penangulangan bencana. Kata Kunci: Kesiapsiagaan, Disaster Education, Town Watcing ABSTRACT Indonesia is vulnerable to earthquakes, volcanic eruptions, tsunamis and other types of geological disasters. Meuraxa District is one of the sub-districts in Banda Aceh City which is at the tip of the island of Sumatra. This area was directly affected by the 2004 earthquake and tsunami. This sub-district often experiences tornadoes, storms and abrasion which damage several building infrastructure and threaten the lives of local people as well as disease outbreaks such as Covid 19, dengue fever and several other diseases. The aim of the activity is to increase public awareness, namely disaster preparedness health cadres regarding disaster management, Identifying the vulnerability of the environment and its surroundings, identifying the capacity/resources of the community that can be used when a disaster occurs, Identifying the main problems in the environment and the community finding solutions to these problems and the existence of a map Meuraxa sub-district disaster risk. This service method uses the Town Watching method and also measures knowledge of the training provided through pre and post tests. The target audience for this service activity is 34 disaster preparedness health cadres. The results of community service in Meuraxa District, Banda Aceh City, obtained knowledge results before and after training for disaster preparedness health cadres. Previously it had an average value of 5.7 to 9.8. The difference in the average value during the pre and post test is statistically significant, where the p value < α (0.000 <0.05). Apart from that, this community service activity also produced a map of supporting facilities for disaster management. Input and suggestions to partners so that this activity remains sustainable at least with periodic training in coordination with health and disaster management partners. Keywords: Preparedness, Disaster Education, Town Watcing

SISTEM KENDALI PROPORSIONAL, INTEGRAL, DAN DERIVATIF (PID) PADA PERSAMAAN PANAS Muhammad Ikhwan; Said Munzir; Nurmaulidar Nurmaulidar
Jurnal Natural Volume 16, Number 2, September 2016
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v16i2.4918

This research showed the application of Proportional, Integral, and Derivative (PID) control system on heat equations that has non-integer ordered solutions on Laplace domain. Zala tuning method and Ziegler-Nichols method; which is ultimate cycle and process reaction method, are used to determine the value of Kp, Ti and Td as constants in PID to maintain the temperature of 1oC on the position of x = 3 m from the heat source with k = 0,042 m2s-1 diffusivity. Based on the results, there were ten systems that were closest in the desired criteria. With regards to overshoot and the time taken to reach the stable position, therefore the ten systems that are produced have not many differences in strengths and weaknesses.

Optimization of fuzzy entropy on solar panel’s motor MUHAMMAD IKHWAN; MARWAN RAMLI; MARDLIJAH MARDLIJAH
Jurnal Natural Volume 22 Number 1, February 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v22i1.23187

Renewable energy has been in great demand by the public, even some countries have set regulations for substitution and transition from fossil energy to renewable energy. This study aims to modify the fuzzy control system with a metaheuristic method, namely fuzzy entropy. The entropy value of the fuzzy set in the previous stage becomes the basis for calculating the foot of uncertainty in the new fuzzy set. This process makes the entropy method parallel to other optimization methods that have been carried out on fuzzy control systems. The results obtained indicate that the modified fuzzy control system successfully controls the angle and angular velocity of the solar panel. The error value shown is very small and the time to reach stability is below 5 s. This is a rapid development of several previous studies. The modified system has no overshoot and steady state error below 1%. Based on these results, entropy research can be developed again by changing the fuzzy set to a more complex form.

Numerical Simulation of Fluid Flow in the Narrow Strait with Density Differences Usman, Tarmizi; Ikhwan, Muhammad; Zulfataya, Muhammad; Adami, Farhan
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 9, No 1 (2025): January
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v9i1.27252

This study investigates the dynamics of fluid flow through a narrow strait connecting two large water bodies with different densities using numerical simulations. The research focuses on understanding how density-driven currents develop and interact in a confined channel, particularly the role of lateral density contrasts and the influence of gravitational and geostrophic forces. A semi-implicit numerical method is employed to efficiently model the complex flow dynamics while ensuring stability. The simulation results are analyzed using visualizations of the flow fields, which highlight the evolution of density-driven currents, vortex formation, and geostrophic adjustments over time. The findings reveal that denser water from the western basin flows toward the eastern basin, lowering the sea surface in the west and raising it in the east. Over time, the Coriolis force causes the bottom flow to deflect southward and the returning surface flow to shift northward, leading to geostrophic equilibrium. Transient vortices emerge within the strait, while stationary vortices form in the outflow regions, underscoring the interplay between gravitational forces, density contrasts, and rotational effects. These findings offer important insights into the hydrodynamic behavior of narrow straits, which are common in nature. The results can help improve the understanding of flow patterns in similar environments, such as fjords, estuaries, and channels, and may contribute to studies on sediment transport, nutrient mixing, and renewable energy potential in density-driven systems.

Path Planning for Parking of Four Wheeled Vehicle with Minimum Energy and Optimum Parking Space Lutfan Milzam, Ahmad; Usman, Tarmizi; Ikhwan, Muhammad; Mahmudi, Mahmudi; Amri, Saiful
Transcendent Journal of Mathematics and Applications Vol 1, No 1 (2022)
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/tjoma.v1i1.28853

As the number of private vehicles grows, so does the demand for parking space. It was also in charge of traffic congestion and high parking fees in downtown, particularly near public services and the central business district. The goal of this paper was to optimize path planning with the least amount of energy and the most parking space. To achieve this goal, three parts of optimization were used. They were divided into three categories: optimal parking space for obtaining area bounded and parking angle, path planning with boundaries and constraints to find the path with the least amount of energy, and finally vehicle direction for comparison with other recent works. The simulation revealed that the best parking space could result in a parking angle as the final vehicle direction. Based on the results, the produced path was more efficient, with an objective function energy of 394.44 unit of energy and a vehicle speed of 4.3 km/h. Because of its closeness to previous work, the route verified that it could be driven in reverse parking action.

Determining The Selling Price of Thrift Using The Fuzzy Sugeno Method Radhiah, Radhiah; Rusdiana, Siti; Hamdi, Syaiful; Nurmaulidar, Nurmaulidar; Syahrini, Intan; Mahmudi, Mahmudi; Ikhwan, Muhammad
Indonesian Journal of Applied Mathematics Vol. 3 No. 2 (2023): Indonesian Journal of Applied Mathematics Vol. 3 No. 2 October Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/indojam.v3i2.1598

The use of thrift goods in life has the effect of saving and loving the environment. Many of these objects are difficult to degrade in nature and are nevertheless thought to have economic worth, for example used electronic equipment such as laptops. On the other hand, in today's classroom environment, laptops are quite important. Even the most recent computers with good features are fairly costly, thus used laptops are one answer to this. The seller's selling price usually only takes a few elements into account, therefore the price set does not always match the requirements. The aim of this paper is to apply the zero order Sugeno fuzzy approach to determine the selling price of old laptop. The system is built with characteristics such as laptop age, physical condition, RAM, new purchase price, and used selling price. The simulation findings suggest that fuzzy logic employing the zero-order Sugeno approach can be utilized to determine the selling price of old laptop while accounting for the affecting variables.

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