4 Different Types of Controllers That Are Used in Industries

1. 4 Different Types of Controllers That 4 Different Types of Controllers That A Are re Used in Industries Used in Industries A controller is generally a unit present in a control system that usually generates A controller is generally a unit present in a control system that usually generates control signals for reducing the deviation of the actual value from the desired value to control signals for reducing the deviation of the actual value from the desired value to almost zero or the lowest possible value. They are responsible for the control acti almost zero or the lowest possible value. They are responsible for the control action of on of the system so as for getting the accurate output. In this article, we will discuss the system so as for getting the accurate output. In this article, we will discuss the the types of types of controllers that controllers that are used in the industries. are used in the industries. The controller is a compilation term that is used for recounting different types of The controller is a compilation term that is used for recounting different types of control systems and conn control systems and connected instrumentation that includes the devices, systems, ected instrumentation that includes the devices, systems, networks, and control used for working or automating control systems. Depending on networks, and control used for working or automating control systems. Depending on the industry, they function differently and are built for managing the tasks efficiently. the industry, they function differently and are built for managing the tasks efficiently. Controllers provide the d Controllers provide the desired control to the control system to get the necessary esired control to the control system to get the necessary output. It is ideal to find a reliable heavy equipment supplier for output. It is ideal to find a reliable heavy equipment supplier for buying high buying high- -quali quality ty Komatsu controllers Komatsu controllers , constriction equipment, and many others. , constriction equipment, and many others. Below, I’m going to share the various types of controllers that are used in industries. Below, I’m going to share the various types of controllers that are used in industries. Types of Controllers Types of Controllers Before discussing the types of controllers, you must be aware of the operational modes Before discussing the types of controllers, you must be aware of the operational modes of the controllers. This is so because the several types of controllers are originated from of the controllers. This is so because the several types of controllers are originated from

2. dissimilar modes of operation. There are generally two modes of operation i.e dissimilar modes of operation. There are generally two modes of operation i.e. . discontinuous and continuous. discontinuous and continuous. Discontinuous Discontinuous It permits a discrete output value. In discontinuous mode, the output doesn’t illustrate It permits a discrete output value. In discontinuous mode, the output doesn’t illustrate smooth variation according to the signal generated by the controller slightly shows smooth variation according to the signal generated by the controller slightly shows fluctuations from one value to anoth fluctuations from one value to another. Based on the mode of operation, there are two er. Based on the mode of operation, there are two types of controllers: types of controllers: On On- -off/ two Multi Multi- -position controllers position controllers off/ two- -position controllers position controllers

3. Continuous Continuous It allows smooth variation of the prohibited output over the complete range of It allows smooth variation of the prohibited output over the complete range of operation. operation. The output of the control system shows a continuous variation in proportion to the The output of the control system shows a continuous variation in proportion to the entire error signal or some form of it. entire error signal or some form of it. So, based on the input applied, they are classified as: So, based on the input applied, they are classified as: Proportional controller Proportional controller Integral controller Integral controller Derivative controller Derivative controller Now, take Now, take a look at each type of controller. a look at each type of controller.

4. 1. 1. Two Two- -Position Controllers Position Controllers It is also known as on/off controllers. The output of this controller generally fluctuates It is also known as on/off controllers. The output of this controller generally fluctuates between two specific values, generally the maximum and minimum value. The between two specific values, generally the maximum and minimum value. The maximum value of the control maximum value of the controller is generally considered 100% while the minimum is ler is generally considered 100% while the minimum is 0%. 0%. This is one of the easiest and most common types of control action of a controller. In This is one of the easiest and most common types of control action of a controller. In this controller, the output shows variation between maximum and minimum values this controller, the output shows variation between maximum and minimum values according to the actuating error according to the actuating error signal. But when the actuating signal value increases signal. But when the actuating signal value increases a critical value, the output is changed from minimum value to maximum value. a critical value, the output is changed from minimum value to maximum value. Similarly, it gets reduced to its minimum value from the maximum value when the Similarly, it gets reduced to its minimum value from the maximum value when the error signal value falls below the critical error signal value falls below the critical value. value. 2. 2. Proportional Controller Proportional Controller In this controller, a proportional linear relationship is maintained between the In this controller, a proportional linear relationship is maintained between the controlled variable and the actuating error signal. It permits both direct as well as controlled variable and the actuating error signal. It permits both direct as well as reverse action. reverse action. 3. 3. Integral Controller Integral Controller This is a type o This is a type of control action that shows the rate of change of the output f control action that shows the rate of change of the output proportionally with the actuating error signal that is known as an integral controller. proportionally with the actuating error signal that is known as an integral controller. In this integrating controller, the rate of change of the output generally depends on In this integrating controller, the rate of change of the output generally depends on the integrating time the integrating time constant until the time error signal becomes zero. constant until the time error signal becomes zero.

5. 4. 4. Derivative Controller Derivative Controller In this type, the controller depends on the rate with which the error signal varies. The In this type, the controller depends on the rate with which the error signal varies. The derivative controller serves as a beneficial factor for the system because every time the derivative controller serves as a beneficial factor for the system because every time the output varies when any change occurs in the error signal, providing the accur output varies when any change occurs in the error signal, providing the accurate ate output before the output approaches a large value. Generally, these modes are not output before the output approaches a large value. Generally, these modes are not used individually; they are always used in combination. used individually; they are always used in combination. These are some different types of controllers that are used in the industry's control These are some different types of controllers that are used in the industry's control systems. You can find systems. You can find one of the one of the best best heavy equipment suppliers heavy equipment suppliers for buying for buying construction equipment, accelerators, construction equipment, accelerators, Komatsu controllers Komatsu controllers, , and many others. and many others. GET IN GET IN TOUCH TOUCH 305 305- -815 815- -8208 8208 3330 NE 190th Street, # 1412 3330 NE 190th Street, # 1412 Aventura, FL 33180 Aventura, FL 33180 sales@sparepart4less.com sales@sparepart4less.com www.sparepart4less.com www.sparepart4less.com