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Session 3513

CONTROLS LABORATORY TEACHING VIA THE WORLD WIDE WEB

Jim Henry The University of Tennessee at Chattanooga

The engineering controls systems laboratory at UTC Hardware Stations has been made available for students to use via the World Wide Web. Students can conduct controls Six different stations for controls systems lab experiments from remote sites. This paper experiments are available. They consist of describes the hardware and software that is used for this facility, describes the way the course was managed and discusses strengths and "opportunities 1 Pressure control by varying the speed of a for improvement" that have been observed in this blower offering. 2 Level control in a water tank by varying The web address for the lab is the speed of a water pump http://chem.engr.utc.edu. This paper in expanded form is at 3 Temperature control in a heat exchanger http://chem.engr.utc.edu/Henry-Pub by varying the flow rate of a hot water supply

HARDWARE AND SOFTWARE 4 Speed control of a motor-generator set by varying the signal to a motor power The controls laboratory for several years has been supply using desktop computers for data acquisition and control of engineering equipment. The students 5 Position control in a cart-on-a-rail by conduct experiments to accomplish system varying the torque in a motor identification and design feedback controllers for the systems. The data acquisition and control 6 Flow control in a closed flow loop by software is written with LabVIEW software. varying the speed of a pump. Controller design involved tuning two feedback controllers, a proportional controller and a proportional-integral controller. Each of these is a single-input, single output system. All are inherently stable systems The computers are all networked with ethernet and when run in open-loop configuration. that have internet (IP) addresses. A web-server program is, if you specify a fixed input value, the was developed which allowed students to conduct system will reach a constant steady-state experiments using widely available web browsers. condition. The students conducted the experiments either from

1996 ASEE Annual Conference Proceedings

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Henry, J. (1996, June), Controls Laboratory Teaching Via The World Wide Web Paper presented at 1996 Annual Conference, Washington, District of Columbia. 10.18260/1-2--5941