Comparative Test Results of a Brushless DC Starter Generator vs. Traditional Starter Generator with Brushes

2009 ◽  
Author(s):  
L. Todd Morris ◽  
Stan Patterson
Keyword(s):  
Comparative Test ◽  
Test Results ◽  
Brushless Dc ◽  
Starter Generator

scholarly journals PID Control System on Brushless DC Motor for Quadcopter Balance

Jurnal INFORM ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 110-114
Author(s):  
Mochamad Mobed Bachtiar ◽  
Fernando Ardilla ◽  
Muhammad Faiz Hasbi ◽  
Iwan Kurnianto Wibowo
Keyword(s):  
Pid Control ◽  
Control Method ◽  
Dc Motor ◽  
Unmanned Aircraft ◽  
Integrated System ◽  
Brushless Dc Motor ◽  
Test Results ◽  
Brushless Dc ◽  
Aerial Vehicle ◽  
Aircraft System

Unmanned Aerial Vehicle (UAV) is an unmanned aircraft system that is no longer a special need but has become a general need for the community, and one example is used to capture everyday moments through photos or videos from the air. Among the models of UAV aircraft is the quadcopter, where there is a flight controller that functions to fly the quadcopter by adjusting the speed of each motor. The flight controller that is often used today is the Pixhawk manufacturer. The Pixhawk module is an integrated system that the factory has provided, so it cannot be modified in terms of control and I/O. This research focuses on making an independent flight controller that can be used to fly a quadcopter. The control method that is implanted is Proportional Integral Derivative or commonly known as PID. The flight controller uses the PID control method to adjust each Brushless DC Motor (BLDC) speed to maintain stability while flying. From the test results, the quadcopter can fly stably with KP parameters of 2.5, KI of 0.6, and KD of 1.0. The response time in processing feedback is 3s.

scholarly journals A Parallel Algorithm for the Counting of Ellipses Present in Conglomerates Using GPU

2018 ◽  
Vol 2018 ◽  
pp. 1-17 ◽  
Author(s):  
Reyes Yam-Uicab ◽  
José López-Martínez ◽  
Erika Llanes-Castro ◽  
Lizzie Narvaez-Díaz ◽  
Joel Trejo-Sánchez
Keyword(s):  
Image Processing ◽  
Comparative Test ◽  
Test Results ◽  
Interesting Problem ◽  
Parallel Method ◽  
Processing Times ◽  
Occluded Objects ◽  
Real World Applications ◽  
Detection Of Objects ◽  
Combinatorial Process

Detecting and counting elliptical objects are an interesting problem in digital image processing. There are real-world applications of this problem in various disciplines. Solving this problem is harder when there is occlusion among the elliptical objects, since in general these objects are considered as part of the bigger object (conglomerate). The solution to this problem focusses on the detection and segmentation of the precise number of occluded elliptical objects, while omitting all noninteresting objects. There are a variety of computational approximations that focus on this problem; however, such approximations are not accurate when there is occlusion. This paper presents an algorithm designed to solve this problem, specifically, to detect, segment, and count elliptical objects of a specific size when these are in occlusion with other objects within the conglomerate. Our algorithm deals with a time-consuming combinatorial process. To optimize the execution time of our algorithm, we implemented a parallel GPU version with CUDA-C, which experimentally improved the detection of occluded objects, as well as lowering processing times compared to the sequential version of the method. Comparative test results with another method featured in literature showed improved detection of objects in occlusion when using the proposed parallel method.

scholarly journals Kendali Motor DC Brushless Modifikasi Mengunakan IC Ne555 Dan CD4017

Electrician ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 20-24
Author(s):  
Wiwin A Oktaviani ◽  
Ibnu Sukri
Keyword(s):  
Load Test ◽  
Brushless Dc Motor ◽  
Maximum Speed ◽  
Test Results ◽  
Motor Speed ◽  
Brushless Dc ◽  
Speed Controller ◽  
Unloaded State ◽  
Full Speed ◽  
Excellent Tool

In general, the Brushless DC motor speed controller uses an Atmega 16 microcontroller and a MOSFET, which often increases the MOSFET's temperature, especially when the motor is loaded. This article discusses the use of the IC NE555 and CD4017 as a frequency regulator to the MOSFET gate by periodically igniting the forward voltage from the change in the potentiometer value. We carried out the test in an unloaded and unloaded state with voltage variations of 2.5 Vac, 7.5 Vac, 12.5 Vac, and 19.5 Vac. The test results show an excellent tool response where the higher the frequency value, the motor speed will increase. The maximum speed when unloaded reaches rpm at a frequency of 574.6. Whereas in the load test, the full speed reaches 20987 rpm at a frequency of 524.675 Hz. During the test, there was no temperature increase in the MOSFET.  

scholarly journals Perbandingan Stabilitas Obat Racikan Yang Dipreparasi Menggunakan Mortir Dan Tablet Crusher Di Apotek Sarana Pelayanan Kesehatan Primer

2020 ◽  
pp. 110
Author(s):  
Made Krisna Adi Jaya
Keyword(s):  
Direct Contact ◽  
Care Facility ◽  
Health Care Facility ◽  
Significance Test ◽  
Comparative Test ◽  
Primary Health Care Facility ◽  
Test Results ◽  
Primary Health ◽  
The Difference ◽  
The Stability

Background: Drugs crushed using mortar is indeed already assessed according the procedure and maintained stability of the cure. But this process requires a relatively long that made some pharmacies preparing medications using a tablet crusher machine. There is a possibility of crushed using a tablet crusher will reduce the stability of certain types of drugs if direct contact with the metal blender machine. Purpose: the variable examined was the stability of the region, namely drug comparison of levels of a drug that dipreparasi uses a tablet crusher and mortar in the primary health care facility pharmacies. Methods: UV-VIS spectrophotometry. Results: the maximum wavelength of klorfeniramine maleate acquired was 261.5 nm and paracetamol is 247.7 nm. % recovery of klorfeniramine maleate raw is ± 2.8% whereas 99.82 on paracetamol is 2.09% ± 100.17. The result of the calculation precision value was obtained by tests at on klorfeniramine maleate is 0.76% whereas on paracetamol is 1.13%. LOD and LOQ of klorfeniramine maleate is 3.20 ± 0.05 and 0.15 ± 9.7 while the LOD and LOQ of paracetamol is 0.38 ± 0.22 and 1.16 ± 0.56. Preparation of comparative test results time crushed with a levels has been made aware that the value of significance test of the Mann Whitney absence of difference levels of drugs that are dipreparasi using mortars and tablet crusher. Conclusion: Drug Crushed with tablet crusher and with mortar does not have the difference statistically. Keyword: blender, crusher, mortars, stability

Laboratory Testing of Prosthetic Heart Valves

1987 ◽  
Vol 16 (2) ◽  
pp. 67-76 ◽  
Author(s):  
H Reul ◽  
M Giersiepen ◽  
E Knott
Keyword(s):  
Steady Flow ◽  
Pulsatile Flow ◽  
Laboratory Testing ◽  
Heart Valves ◽  
Fatigue Testing ◽  
Comparative Test ◽  
Prosthetic Heart Valves ◽  
Test Results ◽  
Testing Methods

A whole range of laboratory testing methods for prosthetic heart valves, such as steady flow testing, pulsatile flow testing, and fatigue testing, are presented. Comparative test results for various valve types are given and relative valve performance is discussed.

Analysis of Surface Rolling Process Impact on Crankshaft Fatigue Strength

2012 ◽  
Vol 488-489 ◽  
pp. 236-240
Author(s):  
Xiao Ping Chen ◽  
Ru Fu Hu
Keyword(s):  
Standard Deviation ◽  
Fatigue Strength ◽  
Rolling Process ◽  
Comparative Test ◽  
The Other ◽  
Test Results ◽  
The Impact ◽  
Effect Of Surface

In this paper, the fatigue comparative test includes two groups of crankshafts, one group with surface rolling process and the other not, has been finished. And the test results are analyzed. The parent standard deviation test shows that there is not effect of surface rolling process impact on the uniformity of crankshaft fatigue strength. But it is sure that there is the impact of surface rolling process impact on the average of crankshaft fatigue strength by the average maternal test. So the surface rolling process can be used to improve crankshaft fatigue strength.

scholarly journals High-Performance Methods for Welding Steel P460NL2

2021 ◽  
pp. 21-28
Author(s):  
Marcin Kempa
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Welded Joints ◽  
High Performance ◽  
Comparative Test ◽  
Test Results ◽  
Welding Steel

The article discusses comparative test results concerning two welding methods, i.e. SAW and MAG. The tests involved the making of welded joints in steel P460NL2, the verification of the chemical composition of supplied steel, the comparison of the quality of joints (in accordance with PN-EN ISO 5817) as well as the performance of macroscopic tests and the comparison of mechanical properties and hardness.

scholarly journals Research of influence of open-winding faults on properties of brushless permanent magnets motor

Open Physics ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 959-964
Author(s):  
Piotr Bogusz ◽  
Mariusz Korkosz ◽  
Adam Powrózek ◽  
Jan Prokop ◽  
Piotr Wygonik
Keyword(s):  
Permanent Magnets ◽  
Simulation Models ◽  
Brushless Dc Motor ◽  
Bldc Motor ◽  
Test Results ◽  
Hybrid Drive ◽  
Brushless Dc ◽  
Laboratory Test Results ◽  
Aerial Vehicle ◽  
The Subject

AbstractThe paper presents an analysis of influence of selected fault states on properties of brushless DC motor with permanent magnets. The subject of study was a BLDC motor designed by the authors for unmanned aerial vehicle hybrid drive. Four parallel branches per each phase were provided in the discussed 3-phase motor. After open-winding fault in single or few parallel branches, a further operation of the motor can be continued. Waveforms of currents, voltages and electromagnetic torque were determined in discussed fault states based on the developed mathematical and simulation models. Laboratory test results concerning an influence of open-windings faults in parallel branches on properties of BLDC motor were presented.

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