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Suhendra, Tonny

Fakultas Teknik Universitas Maritim Raja Ali Haji

Author-ID : 805502

Computer Science & IT Electrical & Electronics Engineering

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Simulasi Kendali Pergerakan Mobile Robot Menggunakan Algoritma A-star dalam Menentukan Jarak Terpendek Suhendra, Tonny; Nugraha, Sapta; Yunianto, Anton Hexso; Uperiati, Alena
Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Vol 6 No 1 (2017): Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan
Publisher : Fakultas Teknik Universitas Maritim Raja Ali Haji

Planning the path is one of the most important things in the world of robotics, especially autonomous robots, to be able to move the autonomous robot requires a path that will guide the movement, or steps to be taken next, can also be spelled out as the determination of the point of coordinates to be addressed so that the robot can move to destination by taking the nearest lane and guiding the robot not to take unnecessary steps. This research uses adaptive A-star algorithm as the shortest path finding algorithm, the algorithm used is the development of A-star algorithm so that it can perform path search gradually and done repeatedly to determine every step that must be taken robot in the future and this algorithm belongs to a simple algorithm in a family heuristic algorithm. The test environment is built using Netlogo 5.3.1 Application, an agent-based application developed by Uri Wilensky at the center for Connected Learning and Compute-based Modeling at Northwestern University. The results of the tests have shown that the adaptive A-star algorithm can perform the optimal shortest path search and not trapped in the optimal local conditions with a standard deviation of 0.422%.

Perhitungan Koefisien Drag dan Kooefisien Lift pada Lambung Kapal Katamaran Simetris (Symmetrical) dan Tidak Simetris (Asymmetrical) Yunianto, Anton Hexso; Suhendra, Tonny
Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Vol 6 No 2 (2017): Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan
Publisher : Fakultas Teknik Universitas Maritim Raja Ali Haji

Catamarans (double hull) as the river and sea transport modes that are rapidly being developed today and will likely continue to grow in the future, especially in Europe, America, and East Asia. One thing that makes popular catamaran and successfully applied in the mode of transportation because of the availability of a wide deck area, more comfortable level of stability and security. Catamarans tend to have lower water draf than the monohull vessel with the same displacement, so that it can be operated in shallow waters. Then the hull shape as a slender hull can reduce the incidence of wave wash than a single hull ship (monohull). An object moving through a fluid will experience the net force of the fluid in the body. For gastric symmetry, this force will occur in the free flow direction of a drag (D). If the stomach is not symmetrical, there will also be a normal force against the free flow of an elevator (L). Numerical modeling shows that fluid flow is laminar, critical, and turbulent. This is indicated by the direction of the vorticity field and the fluid type mass distribution, the greater the flow rate the flow properties will become increasingly random or turbulent.

Kendali Kecepatan Motor DC dengan Metode Pulse Width Modulation menggunakan N-channel Mosfet Suhendra, Tonny; Uperiati, Alena; Purnamasari, Dwi Amalia; Yunianto, Anton Hekso
Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Vol 7 No 2 (2018): Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan
Publisher : Fakultas Teknik Universitas Maritim Raja Ali Haji

The DC motor is one component of robot, the main function of a DC motor is as a driver, whether its a legged robot or not, as used in a mobile robot. DC motor control is necessary to be one thing that must be considered, because if the motor does not run properly, it will renew the purpose of the motor when it is created. The ability to control a DC motor is needed when building a robot. Many things can affect a personâs ability to design DC motor controller, one of which is the development of science, especially computer science, the use of algorithms to achieve the effectiveness of DC motor movements is very necessary today, so that the robot can move well and according to what is desired. The algorithm requires some information from the system that is built either as input or output so that the algorithm can perform the control process properly. in this study the motor speed controller circuit has been designed using transistor IR630 (n-channel mosfet), in this study the motor speed controller circuit has been designed using transistor IR630 (n-channel mosfet), the potentiometer is used as an analog input on the microcontroller and then converted to a PWM signal which will be used as input to the controller circuit to drive a DC motor. In the tests that have been carried out, the results obtained that the motor can be controlled properly, the use of resistors with a certain amount (220 ohms) can increase the resulting motor rotation and at what voltage the motor starts to spin at a voltage of 0.436 volts, and continues to increase and the maximum voltage recorded at 6.40 Volts.

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