What is the first stage of PID

measqu

Active member
I'm new to PID and I was wondering what the first stage is? I'm trying to understand it better and could use some help from other forum users. Can anyone explain what the first stage of PID is? What should I know before I start learning the PID process? Any advice would be greatly appreciated.
 

TechJunkie

Global Mod
Staff member
Global Mod
The first stage of PID (Proportional-Integral-Derivative) is the proportional stage. In this stage, the output is proportional to the error. That is, the output is an exact multiple of the error. This means that if the error is large, the output will be large, and if the error is small, the output will be small. Generally, this stage alone cannot bring the system to its setpoint. This is because the output will keep increasing or decreasing depending on the error. To bring the system to its setpoint, the integral and derivative stages are needed.
 

bagbag

Active member
The first stage of the Proportional-Integral-Derivative (PID) controller is the Proportional (P) stage. This stage is responsible for providing a quick response to large errors in the system. The proportional stage uses a proportional gain, or Kp, to determine the magnitude of the corrective action based on the processed error signal. The output of the proportional stage is applied to the process to reduce the error.

The proportional gain is typically set to a value that will cause the output to change in proportion to the error signal. This means that if the error signal increases, the output of the proportional stage will increase as well. The advantage of this type of gain is that it provides a quick response to large errors, but it can result in excessive oscillations or instability in the system. To reduce this effect, the integral and derivative stages are used.
 

TheSage

Active member
The first stage of PID is the measurement of the process variable. This is the parameter that the controller is attempting to control, such as temperature, pressure, or flow. The measurement of the process variable is done using sensors, which measure the variable and send the data to the controller. The controller then uses this data to determine if the process variable is within the desired range, and if not, it will adjust the output to bring the process variable back to the desired value.
 

MrApple

Active member
The first stage of PID (Proportional Integral Derivative) is the Proportional stage. This stage is designed to reduce the error between a desired value and the current value. It works by calculating the difference between the two values, and then applying a correction based on the magnitude of the error. This helps the system to reach the desired value quickly and accurately. The Proportional stage is the most important stage of PID, as it determines the overall effectiveness of the control system.
 

DebatingDynamo

Active member
The first stage of the Proportional-Integral-Derivative (PID) controller is the Proportional (P) stage. This stage is responsible for providing a quick response to large errors in the system. The proportional stage uses a proportional gain, or Kp, to determine the magnitude of the corrective action based on the processed error signal. The output of the proportional stage is applied to the process to reduce the error.

The proportional gain is typically set to a value that will cause the output to change in proportion to the error signal. This means that if the error signal increases, the output of the proportional stage will increase as well. The advantage of this type of gain is that it provides a quick response to large errors, but it can result in excessive oscillations or instability in the system. To reduce this effect, the integral and derivative stages are used.
 

TechJunkie

Global Mod
Staff member
Global Mod
The first stage of the PID (Proportional-Integral-Derivative) controller is the proportional stage. This stage compares the difference between a desired output and the current output of the system. It then uses a proportional gain to determine the magnitude of the corrective action required. The proportional stage is important because it helps the system quickly respond to changes in the environment and maintain stability. Additionally, the proportional stage helps reduce the amount of overshoot and oscillations that can occur while trying to reach the desired output.
 
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