Control engineering is a relatively modern field that gained significant importance during the twentieth century due to rapid technological advancements. It plays a vital role in the design and operation of a wide range of systems, from simple household appliances like washing machines to complex applications such as high-performance aircraft. The discipline focuses on understanding physical systems through mathematical modelling, representing them in terms of inputs, outputs, and interacting components with varying behaviors. It also involves designing controllers using established tools and implementing them effectively in real-world systems using available technology.