A motor open loop is a control system used to control the speed or position of the motor, open loop system is also known as a "no feedback system". In an open-loop system, control inputs such as voltage and current are not compared to the output required for speed or position, i.e., the control inputs are not affected by the output, and the system does not adjust the control inputs based on feedback from the motor. In a clock, for example, there is no device in the clock to observe whether its time is accurate, and it does not actively adjust its time, so the clock is an open-loop system.
Despite these drawbacks, motor open-loop systems are widely used in many applications. They are often used in simple machines or systems where accuracy and precision are not critical. They are also used in applications where cost is a major consideration, as open-loop systems are typically less expensive to implement than closed-loop systems.
In summary, an open-loop motor system is a control system used to control the speed or position of a motor. It is relatively simple and easy to implement, but not as accurate and precise as a closed-loop system, so it is mostly used in simple machines or systems that do not require high accuracy and precision.