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All Journal Indonesian Journal of Electronics and Instrumentation Systems
Andi Dharmawan
Department of Computer Science and Electronics, Universitas Gadjah Mada
Electrical & Electronics Engineering

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Rancang Bangun Sistem Pengukuran Medan Magnet Menggunakan LabVIEW, CONTROLLER NI cRIO-9022, dan DTM-151 Digital Teslameter Musaffiriyan Rasyid Ghoni; Andi Dharmawan; Slamet Santosa
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 2 (2015): October
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1291.833 KB) | DOI: 10.22146/ijeis.7637

Abstract

            Pusat Teknologi Akselerator dan Proses Bahan (PTAPB) BATAN Yogyakarta currently developing a magnetic field measurement system for cyclotron machine. Magnetic field measurement on cyclotron is required to determine the magnitude and direction of the magnetic field.            The system used LabVIEW to create an interface application (HMI) and system programming. The control function implemented by using controller NI cRIO-9022 combined with NI 9512 module, which would controlling the motion component, that isthe  stepper motor. The acquisition data function implemented by using DTM-151 Digital Teslameter to measure the magnetic field. The measurement works within the cartesian coordinate plane (x,y).            A permanent magnet was used as the measurement trial object. The size of the magnet was smaller than measurement dimension of the system therefore the  measurement dimension of the magnetic plane was made with the size of (100 x 100) mm. The initial position coordinate of the teslameter 1 and teslameter 2, respectively, set at (430,720) and (430,240). The trial was excuted 2 times (2 different magnet position). Each trial consist of 3 times measurement, so there’s 6 data file obtained. On those data file, there’s an average of 1.117 data on each file. The motor speed was set on 25 mm/s. The data reading speed was set on 10 data/s, which would caused a 2,5 mm interval on one single data.
Penerapan Sistem Kendali PID untuk KestabilanTwin-Tiltrotor dengan Metode DCM Andi Dharmawan; Sani Pramudita
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 2 (2015): October
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (551.627 KB) | DOI: 10.22146/ijeis.7638

Abstract

Twin-tiltrotor is a type of multirotor which has two propellers as propulsion located on the right and left of the body and can be moved longitudinally. Twin-tiltrotor has a Vertical Take Off and Landing system, so it can hover anytime and it can fly using fixed wing model. This study aims to design a system that can stabilize while hovering using DCM and PID control methods.DCM is a method that transform data obtained from IMU sensor (accelerometer, gyroscope, and magnetometer) and used as a refrence angle of stability of a tiltrotor controlled by PID algorithm. The results of PID will control the servo and brushless motor.The results of this study shows that the stability of the tiltrotor influenced by the position of the load and center of gravity. Beside that, by using the DCM, the result of conversion of sensor data into an angel, has an accuration ±0.11 for roll angle and ±0.15 for pitch angle. PID value of pitch is Kp 0.8, Ki 0.4, and Kd 0.03, while roll angle is Kp 0.32, Ki 0.03, and Kd 0.003.
Sistem Kendali PID pada Modus Transisi Terbang Tiltrotor Syafrizal Akhzan; Andi Dharmawan
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 5, No 2 (2015): October
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1079.13 KB) | DOI: 10.22146/ijeis.7643

Abstract

 Tiltrotor is an unmanned aerial vehicle which can take off vertically and fly with full speed. These abilities are supported by actuators, which can change the angle of propellers in transition mode. Without control system in hovering mode and transition mode, it will be difficult to control tiltrotor. The purpose of this research is to design the system which can stabilize the tiltrotor by maintaining oriented angle of tiltrotor’s roll, pitch, and yaw in hovering mode and transition mode using PID controller.PID controller uses negative feedback which is obtained from accelerometer, gyroscope, and magnetometer by using DMP method and Madgwick quaternion to produce the pulse to control the velocity of brushless motor and angle position of servo motor. The result of PID controller is also compared to P controller and PI controller.According to the test, control system in transition mode for roll angle with setpoint 0o is capable to maintain roll angle at average angle 0.48o with standard deviation 1.75o, for pitch angle with setpoint 25o is capable to maintain pitch angle at average angle 25.26o with standard deviation 2.87o, for yaw angle is capable to maintain yaw angle at range 10o to 0o with average angle 3.78o and standard deviation 1.83o. 
Co-Authors Musaffiriyan Rasyid Ghoni Sani Pramudita Slamet Santosa Syafrizal Akhzan