Control engineering
In most cases, control engineers make use of feedback when designing control systems. For example, in an automobile with sail control, the machine's speed is continuously checked and fed back to the system, which then adjusts the motor's spin power on the fly. Recently, control systems are also used in nanotechnology. In chemical engineering, control engineering is known as process control. Many advancements in science, finance, and even human action, can be attributed to control engineering.