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Pengembangan Bahan Ajar Mikrokontroler Berbasis Arduino sebagai Media Pembelajaran Mata Kuliah Mikrokontroler di Politeknik Pratama Mulia Surakarta Agus Haryawan; Salechan
Politeknosains Vol 16 No 2 (2017): Jurnal Politeknosains Volume 16 Nomor 2 - September 2017
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

This research aims to design a teaching materials for increasing motivation and learning achievement of the students in Microcontroller course, Department of Electronics Engineering, Politama Surakarta. It also aims to identify effects of using Arduino Kit teaching materials in motivation and learning achievement. Data is taken from 2 groups of Assembly Language course, each has 32 students. Research instruments use questionnaire, pretest and post-test. The questionnaire uses 5-point Likert Scale. The pretest and post-test use objective test with 4 options. Data is collected and analyzed with SPSS v23. Homogeneity and normality test are used before testing hypothesizes. Hypothesizes are tested with nonparametric statistics Mann-Whitney U-Test. Research results show that the use of Arduino Kit instructional media has positive impact on both motivation and learning achievement. The average score of motivation of the treatment group (72,90) is higher than the average score of motivation of the control group (68,19). Results also show that the post-test average learning achievement of the treatment group (26,49) is higher than the average learning achievement of the control group 22,03.
Penerapan Teknik Hard dan Soft Switching pada Motor Switched Reluctance 3 Fasa Menggunakan Psim Jumardi; Salechan
Politeknosains Vol 16 No 1 (2017): Jurnal Politeknosains Volume 16 Nomor 1 - Maret 2017
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Classic converter is a series of power converters required to activate and deactivate the motor SRM (switched reluctance motor) which consists of two switches (IGBT) and two diode flywhell for each phase Before making the appliance power converters are real, necessary modeling to know and understand the behavior and the interaction between these converters with a motor. In this study, classic converter modeled with PSIM software to recognize performance by applying the hard and soft switching techniques. Mechanical hard switching is a condition where the second IGBT current on and off is made in the same time, while the soft switching technique is a condition in which the second working IGBT current on and off is made in different time. In order to implement these two techniques required angle and angle on the pulse. On the corner is a corner to produce forward rotation, the magnitude of 900. The pulse angle is the angle to produce the desired rotation and torque (set pulse width), the magnitude of 00 - 1200. angle and angle on a series of pulses inserted into the controller to turn on and off a series of classic converter which supplies the source voltage to the stator coil. Mechanical hard switching produce rotation, minimum torque, which is greater than the voltage soft switching techniques. Soft switching technique produces motor current and losses in semiconductor that is larger than the hard switching techniques. Mechanical hard switching. generates maximum torque similar to a soft switching technique (1.213 Nm and 1.216 Nm).