Development of wireless vertical bar spinner combat robot

Recently, combat robot competition has become one of the most famous engineering competitions among schools and universities. The robots are usually built with a destructive weapon, which can immobilize or disable opponent’s robot and win the match. Despite the variety of robot design and concept, the trend has shown that most of the local contestant tend to design a horizontal axis weapon type. In this project, a wireless vertical axis bar spinner combat robot is designed and developed for the 3rd Malaysia Combat Robot Competition which was held at National Science Centre (PSN) in 2017. The robot is controlled using radio control (RC) and powered by a highly discharge 22.2V Lithium Polymer (LiPo) chemical battery. Furthermore, related analysis has been conducted to meet the design and performance requirement of the competition. With the DC brush motor and thick metal bar rotating in vertical axis, the robot has proven to produce high power, torque and speed during the competition.

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Comparison of horizontal axis wind turbine (HAWT) and vertical axis wind turbine (VAWT)

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.13.21333 ◽

2018 ◽

Vol 7 (4.13) ◽

pp. 74 ◽

Cited By ~ 9

Author(s):

Muhd Khudri Johari ◽

Muhammad Azim A Jalil ◽

Mohammad Faizal Mohd Shariff

Keyword(s):

Wind Turbine ◽

Wind Turbines ◽

Vertical Axis ◽

Green Technology ◽

Horizontal Axis ◽

Vertical Axis Wind Turbine ◽

Horizontal Axis Wind Turbine ◽

Current Output ◽

Voltage Output ◽

And Performance

As the demand for green technology is rising rapidly worldwide, it is important that Malaysian researchers take advantage of Malaysia’s windy climates and areas to initiate more power generation projects using wind. The main objectives of this study are to build a functional wind turbine and to compare the performance of two types of design for wind turbine under different speeds and behaviours of the wind. A three-blade horizontal axis wind turbine (HAWT) and a Darrieus-type vertical axis wind turbine (VAWT) have been designed with CATIA software and constructed using a 3D-printing method. Both wind turbines have undergone series of tests before the voltage and current output from the wind turbines are collected. The result of the test is used to compare the performance of both wind turbines that will imply which design has the best efficiency and performance for Malaysia’s tropical climate. While HAWT can generate higher voltage (up to 8.99 V at one point), it decreases back to 0 V when the wind angle changes. VAWT, however, can generate lower voltage (1.4 V) but changes in the wind angle does not affect its voltage output at all. The analysis has proven that VAWT is significantly more efficient to be built and utilized for Malaysia’s tropical and windy climates. This is also an initiative project to gauge the possibility of building wind turbines, which could be built on the extensive and windy areas surrounding Malaysian airports.

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Wake and performance measurements on the Lawson-Tancred 17 m horizontal-axis windmill

IEE Proceedings A Physical Science Measurement and Instrumentation Management and Education Reviews ◽

10.1049/ip-a-1.1983.0091 ◽

1983 ◽

Vol 130 (9) ◽

pp. 604 ◽

Cited By ~ 2

Author(s):

G.J. Taylor

Keyword(s):

Horizontal Axis ◽

Performance Measurements ◽

And Performance

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First archaeological investigations of barrows in the Bačka region and the question of the Eneolithic/Early Bronze Age barrows in Vojvodina

Praehistorische Zeitschrift ◽

10.1515/pz-2020-0003 ◽

2020 ◽

Vol 95 (2) ◽

pp. 350-375

Author(s):

Jovan Koledin ◽

Urszula Bugaj ◽

Paweł Jarosz ◽

Mario Novak ◽

Marcin M. Przybyła ◽

...

Keyword(s):

Bronze Age ◽

Early Bronze Age ◽

Western Region ◽

Radiocarbon Dates ◽

Funeral Ritual ◽

Science Centre ◽

National Science ◽

Steppe Communities ◽

Burial Mounds ◽

Two Stages

AbstractIn various prehistoric periods, the territory of Vojvodina became the target of the migration of steppe communities with eastern origins. The oldest of these movements are dated to the late Eneolithic and the beginning of the Early Bronze Age. There are at least two stages among them: I – dated to the end of the fourth millennium BC / beginning of the third millennium BC and II – dated from 3000 to 2600 BC and combined with the communities of the classical phase of the Yamnaya culture. The data documenting these processes have been relatively poor so far – in comparison with the neighboring regions of Bulgaria, Romania and Hungary. A big drawback was the small number of systematically excavated mounds, providing comprehensive data on the funeral ritual of steppe communities. This poor database has been slightly enriched as a result of the design of the National Science Centre (Cracow, Poland) entitled “Danubian route of the Yamnaya culture”. Its effect was to examine the first two barrows located on the territory of Bačka – the western region of Vojvodina. Currently, these burial mounds are the westernmost points on the map of the cemeteries of the Yamnaya culture complex. Radiocarbon dates obtained for new finds, as well as for archival materials, allow specifying two stages of use of cemeteries of Yamnaya culture: I – around 3000–2900 BC and II – around 2800–2600 BC. Among the finds from Banat, there were also few materials coming probably from the older period, corresponding to the classical phase of Baden – Coţofeni I–II. The enigmatic nature of these discoveries, however, does not allow to specify their dating as well as cultural dependencies.

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Soft Spherical Tensegrity Robot Design Using Rod-Centered Actuation and Control

Volume 5A: 40th Mechanisms and Robotics Conference ◽

10.1115/detc2016-60550 ◽

2016 ◽

Cited By ~ 11

Author(s):

Lee-Huang Chen ◽

Kyunam Kim ◽

Ellande Tang ◽

Kevin Li ◽

Richard House ◽

...

Keyword(s):

Degrees Of Freedom ◽

Low Cost ◽

Space Exploration ◽

Robot Design ◽

The Novel ◽

Flexible Design ◽

Spherical Robot ◽

Potential Benefits ◽

And Performance ◽

And Control

This paper presents the design, analysis and testing of a fully actuated modular spherical tensegrity robot for co-robotic and space exploration applications. Robots built from tensegrity structures (composed of pure tensile and compression elements) have many potential benefits including high robustness through redundancy, many degrees of freedom in movement and flexible design. However to fully take advantage of these properties a significant fraction of the tensile elements should be active, leading to a potential increase in complexity, messy cable and power routing systems and increased design difficulty. Here we describe an elegant solution to a fully actuated tensegrity robot: The TT-3 (version 3) tensegrity robot, developed at UC Berkeley, in collaboration with NASA Ames, is a lightweight, low cost, modular, and rapidly prototyped spherical tensegrity robot. This robot is based on a ball-shaped six-bar tensegrity structure and features a unique modular rod-centered distributed actuation and control architecture. This paper presents the novel mechanism design, architecture and simulations of TT-3, the first untethered, fully actuated cable-driven six-bar tensegrity spherical robot ever built and tested for mobility. Furthermore, this paper discusses the controls and preliminary testing performed to observe the system’s behavior and performance.

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Three‐component sonde orientation in a deviated well

Geophysics ◽

10.1190/1.1442786 ◽

1990 ◽

Vol 55 (10) ◽

pp. 1386-1388 ◽

Cited By ~ 15

Author(s):

M. Becquey ◽

M. Dubesset

Keyword(s):

Hydraulic Fracturing ◽

Coordinate System ◽

Vertical Plane ◽

Vertical Axis ◽

Horizontal Axis ◽

Orthogonal Coordinate System ◽

Coordinate Rotation ◽

Orthogonal Components ◽

Particle Velocities

In well seismics, when operating with a three‐component tool, particle velocities are measured in the sonde coordinate system but are often needed in other systems (e.g., source‐bound or geographic). When the well is vertical, a change from the three orthogonal components of the sonde to another orthogonal coordinate system can be performed through one rotation around the vertical axis and, if necessary, another one around a horizontal axis (Hardage, 1983). If the well is deviated, the change of coordinate system remains easy in the case when the source is located at the vertical of the sonde, or in the case when the source stands in the vertical plane defined by the local well axis. In the general case (offset VSPs or walkaways) or when looking for unknown sources (such as microseismic emissions induced by hydraulic fracturing), coordinate rotation may still be performed, provided that we first get back to a situation in which one of the axes is vertical.

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