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In this paper, a scheme for closed loop speed control of DC motor in four quadrants using Programmable Logic Controller (PLC) is discussed. The armature voltage is varied using a Class E chopper circuit. The individual switches in the chopper circuit are switched using Pulse Width Modulation (PWM) control signals generated by PLC. Duty cycle of PWM signals are varied by PID controller of the PLC....
Digital literacy is the ability to effectively and analytically navigate, evaluate and create information using a variety of digital technologies. It requires one to recognize that ability, to operate and transform digital media, to distribute it widely, and to easily adapt it to new forms. Digital literacy does not replace traditional forms of literacy, but builds upon the foundation of the traditional...
EPICS (Engineering Projects In Community Service) is a nation-wide program that encourages students to be active in their community and use engineering ideas to solve local problems. In 2006, the EPICS program was expanded and is no longer exclusive to colleges and universities. The extension of the program is called EPICS High, a similar program aimed specifically at high school students. Many exciting...
As technology advances in society, the number of those who threaten its security also has increased. As devices gradually contain more sensitive information, they must be protected from unauthorized access. Cybercriminals are constantly finding new exploits and threats to get around the operating system's innermost workings and steal sensitive data, and potentially make that piece of technology insecure...
Programming is an important tool in the field of engineering and technology. Programming creates a code that is used to instruct a computer to execute a series of actions. Programming is widely used for creating software and applications in such diverse fields as finance, energy, transportation and healthcare. It is widely used in today's high-tech world and has enormous growth potential in the future...
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