Need an example of open loop control system and a closed loop system.. Not really understanding the concept of it..
Open loop control=irrigation sprinkler system or cellular phones
Closed loop system= air conditioner
Sure! I can help you understand the concept of open loop and closed loop control systems by explaining them and providing examples.
Open loop control system:
An open loop control system is a type of control system wherein the output is not directly measured or monitored to adjust the input. It does not use feedback to make corrections or changes in its control action. In other words, the output is not compared with the desired or expected output, and there is no automatic adjustment based on the difference between the two.
Example: Consider a toaster with a simple mechanical timer. When you set the timer for a specific duration, it turns on the heating element for that duration and then automatically turns off. In this case, the timer does not consider the actual state of the toast (i.e., whether it is undercooked or overcooked) and does not make any adjustments based on that. It relies solely on the preset time without any feedback to control the toast's cooking process.
Closed loop control system:
A closed loop control system, also known as a feedback control system, is a type of control system that continuously monitors the output to adjust the input based on feedback information. In this system, the output is compared with the desired output or set point to generate an error signal. This error signal is fed back into the system to adjust the input and bring the output closer to the desired value.
Example: A thermostat controlling the temperature in a room is a common example of a closed loop control system. The desired temperature is set, and the thermostat measures the actual temperature using a sensor. If the actual temperature deviates from the desired temperature, the thermostat adjusts the heating or cooling system to bring it back to the set point. The feedback loop continuously checks the temperature and makes corrections until the desired temperature is reached and maintained.
To summarize, open loop control systems do not have feedback to regulate the output, while closed loop control systems use feedback to continuously monitor and adjust the output to match the desired value.