CurRent issues

Welcome to IJLERA! International Journal of Latest Engineering Research and Applications

Volume 05 - Issue 11 (November 2020)


Title:
Modelling of Rotary Inverted Pendulum based on PID Controller
Authors:
Thanarat Chawaphan, Myo Min Aung, Dechrit Maneetham
Source:
International Journal of Latest Engineering Research and Applications, pp 01 - 07, Vol 05 - No. 11, 2020
Abstract:
The aim of this study is to investigate about the rotary inverted pendulum system which is controlled by PID control system. The authors proposed a vertical rotary pendulum rod method based on parameter control. Through analysis of the parameter value of the pendulum rod during vertical and the rod angle as the feedback coefficient the swing time of the pendulum is reduced. This experiment derived the inverted pendulum motion equation of the pendulum rod using the rotation angle regarded as the input.
Keywords:
Rotary Inverted Pendulum, PID Control, Pendulum Rod
Download Full Article

Title:
Investigating Subsurface Structures Using Geoelectrical Resistivity Technique on Portion of GAEC Site, Accra, Ghana
Authors:
Edmund O. Amartey, Emmanuel Mensah Teye, Ruth A. T. Annan, Prince A. Larbi, Linda Osei-Poku and Paulina E. Amponsah
Source:
International Journal of Latest Engineering Research and Applications, pp 08 - 18, Vol 05 - No. 11, 2020
Abstract:
In the crystalline basement rock environment of Kwabenya, Accra in Ghana, geoelectrical resistivity technique involving horizontal electrical profiling (HEP) and vertical electrical sounding (VES) were conducted on Ghana Atomic Energy Commission (GAEC) site. In order to determine the thickness of the overburden and subsurface structures, 1-dimensional geoelectrical resistivity survey was carried out at the site using Abem Terrameter System and adopting the Schlumberger electrode configuration. From fourteen anomalous points obtained from HEP, the VES surveyed was carried out and the data modelled using the Resist 87 software. The results showed that the area is underlain by 3, 4 and 5 resistivity layers with the 3-layer being dominant. Also, the modelled VES curves indicated H, Q, A, HK, KH and HKH type resistivity curves, with the H-type being dominant at about 57% occurrence. The underlain bedrock was encountered at resistivity values between 114.2 Ωm and 898.4 Ωm, with the overburden layer thickness varying from 2.9 m to 38.6 m. There was an observed lower bedrock apparent resistivity values at the gently hilly northern section compared to the small valley at the southern section, that suggests there is more development of fractures within the bedrock of the northern part. These observed varying overburdern thickness and multiple layers, and the inferred fracture system in the northern section of the area shall require engineering ground improvement to withstand the load of any high rise building during any possible infrastructural expansion at the site.
Keywords:
Geoelectrical resistivity technique, subsurface structure, anomalous point, depth-to-bedrock, GAEC
Download Full Article