This course will introduce the concepts of automatic control systems to the mechanical engineering students. It addresses the subject of control and its real applications. It also explains how to represent a control system, gives the function of its various components, and describes the general process for designing a control system. Controller objectives, design and performance are discussed conceptually and mathematically. A special attention is given to PID controllers which are widely used in industry.
Many mechanical engineering curricula include both instrumentation and controls courses. The instrumentation courses typically focus on transducers and experimental data collection, while the controls courses are often theoretical. The traditional linkage between instrumentation and control, which is still recognized and practiced in industry, is often overlooked in these courses. the mechanical engineering students after graduated will enter the industries and manufacturing processes where programmable logic controllers (PLCs) have become ubiquitous. A PLC is typically combined with a variety of instrumentation inputs from proximity sensors and other transducers. Outputs include electric motors, pneumatic solenoid valves, signal lights, warning horns, etc. Low-cost PLCs with inexpensive PC-based programming packages have become available in recent years. Several manufacturers have excellent websites describing their hardware and software in detail. A generic tutorial on PLC programming is available on the web 6, as well as a manufacturer-specific tutorial.
A successful engineer who is involved in nearly any manufacturing business needs a basic knowledge of the way in which PLCs are used. This course is established under the response of this demand for knowledge about PLCs. In addition to the PLC’s programming languages and hardware configurations, its typical applications in the manufacturing industry are also introduced. A hand-on design project is designed for the students to understand the typical PLC implementation process in industry.