Hello, friends, I hope you all are doing great. In today’s tutorial, we will discuss the Difference Between Open Loop & Closed Loop Systems. in an open-loop system there is no influence of control action on the open-loop system. But in a closed-loop system control action has influence or required output depends on the control action.
In today’s post, we will have a detailed look at both open and closed-loop systems with the detailed and compare them to discuss their differences. So let’s get started with the Difference Between Open Loop & closed-loop System.
Difference Between Open Loop & Closed Loop System
Open Loop System
- An open-loop system also named a nonfeedback controller means there is no control of output at the input.
- There is no feedback given to the input side.
- Its practical example is on and off the process of tap, different machines motors operation
- It cannot reduce any error that occurs
- An example of open-loop is boiler control the use of a timer when its desired option gets timer off it
- Its prices is lower and simple circuitry and easy to maintain
- A cloth dryer is an open-loop system
- It is employed in such applications where complicated structures are needed like a simple process and fewer prices.
- A simple example where it is used is your home cloth dries that are controlled by the users not need certain arrangements to operate.
- There is another example is an irrigation sprinter operation that measures the moisture in the field
- This system is more stable than the closed system.
- It can not be optimized.
- The elements of this system are the Controller and the Controlled Process.
- Its construction is less complicated than the closed-loop system.
- Its reliability is less than the closed-loop system.
- Its accuracy relies on calibration.
Closed-Loop System
- Such a system whose resultant output depends on the control action of the system is called a closed-loop system.
- It also is known as a feedback system.
- The main elements of this system are the Amplifier, Controller, Controlled Process, and Feedback.
- Its physical structure is more complicated than the open-loop system.
- Its response time is less than the open-loop system.
- It can be easily calibrated and there is no need for certain modification
- The disturbance of the system does not affect the closed-loop system.
- It is a linear system and all results are shown at a single graphical line
- Its reliability is larger than the open-loop system.
- Its accuracy is largely due to the use of feedback. that affect the overall results and give better output
- Its stability is less than the open-loop system the main cause is to give feedback to the input
- Examples of this system are the Air conditioner, temperature control system, speed, and pressure control system.
Open-Loop Control System vs Closed-Loop Control System
Open Loop Control System
- The control system without a feedback path called open a loop control system.
- It is also called a non-feedback control system
- The control process is not based on the output of the complete system
- The design and structure of the open loop is simple.
- It provides high-speed response since there is no measuring and feedback output
- Its basic components are the controller and the plant.
- It is a less reliable system.
- Its accuracy open loop control system based on calibration so it is less.
- it is a highly stable system output of is constant
- It is not optimized and needs less maintenance
- It can easily apply
- It is low-cost system
- It produces high noise
Closed Loop Control System
- In this system feedback path called a closed-loop control system
- It is also called the feedback control system
- Control action is based on the output of the system
- It is a complex desing and difficult construction.
- Its main parts are Controller, plant or process, feedback element, and comparator used for error detection
- It is slow due to the existence of feedback
- It is highly reliable and highly accurate than an open-loop control system
- It is a less stable system and optimized to get the required result
- It needed high maintenance.
- It isn’t easy to apply and a high-cost system
- It has low inner noise
- Common applications are ACs, toasters, rocket launching systems, fridges,radar tracking systems
That is all about the difference between open-loop and closed-loop systems. If you have any queries ask in the comments. Thanks for reading. Have a good day.