Journal articles
https://hdl.handle.net/20.500.12852/707
2024-03-29T07:30:38ZTuning of speed-governing system for Kalayaan Pumped Storage Power Plant
https://hdl.handle.net/20.500.12852/2472
Tuning of speed-governing system for Kalayaan Pumped Storage Power Plant
Calibjo, Cirilo C.
Changes in system frequency are caused by any imbalance between load and generation. To control these, a speed governor is usually provided. The change in frequency may be either stable or unstable depending on the values of the parameters of the plant and governor. This paper describes a simple analytical procedure of tuning electro-hydraulic P.I.D. governors for the units of Kalayaan Pumped Storage Power Plant. Mathematical analysis is carried out using MATLAB simulation software, while validation through time simulation is performed using Power System Simulator/ Engineering (PSS/ E). Optimum gain settings were found both during isolated and grid operations. Although actual plant testing was not possible, the result of the study is seen as an improvement from the usual trial-and-error approach which is currently being practiced.
Journal article
1996-07-01T00:00:00ZRobocar: Design implementation and testing of a robot car
https://hdl.handle.net/20.500.12852/706
Robocar: Design implementation and testing of a robot car
Calibjo, Cirilo C.
This study was conducted to design, construct and test the performance of a Robot Car. Specifically, the study aimed to develop a working prototype of a microcontroller driven LEGO car; develop step-by-step instructions for building a Robot Car; test the performance of the Robot Car using a circuitous track made of black electrical tape; determine the average illumination levels for the photo resistors to react either to stop or steer the car; and to measure the effective distance for the infrared sensor to give appropriate signal for a possible obstacle in the path. The “Robot Car” used embedded control in the form of a micro controller board and was designed to follow a path made of black electrical tape on a white background. The track was a circuitous course that contains 3-inch long strips of electrical tape perpendicular to the main track. These strips are long enough to overlap all three sensors on the line-tracker. Results revealed that if an obstacle, about eight (8) inches far, is encountered the vehicle stops until that path is once again clear. The photo resistors allowed the car to be steered by a flashlight or to stop when ambient light decreases to approximately 5 lux. The development of a prototype ROBOCAR will allow students in the course, Embedded Computer System Design, to design, build, and debug their own robot that will play in a competitive performance event. The hardware, software, and other information they need to design, build, and debug their own robot are pro vided by this study. This will enhance students’ interest about robotic design and other applications that are revealed to various Software Engineering classes.
Abstract only
2005-06-01T00:00:00Z