- #1
Design a Voltage Feedback Loop w/ PID Controller
In summary, the conversation discusses where to place a PID controller in a voltage feedback loop. The consensus is to connect the top of the PID to the left side of the pulse generator and add arrowheads to both the PID and pulse generator to indicate input and output. The purpose of the PID is to control the pulse width and maintain the correct average voltage at VC, which is the basis of feedback control.
- #2
jim hardy
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Between line VC and the pulse generator.
Difference between measured and desired VC is error , function PID(error) controls pulse width.
Difference between measured and desired VC is error , function PID(error) controls pulse width.
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jim hardy
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I'd connect top of PID to left side of pulse generator, to represent controlling pulse generator's input, instead of where you have it which is its output .
And i'd add arrowheads to PID so it's intuitive that bottom is PID input and top is output.
Likewise add arrowheads to pulse generator.
The point is you let PID control the pulse width to make correct average voltage over at VC.. That's the basis of feedback control - continually measure , compare, adjust.
And i'd add arrowheads to PID so it's intuitive that bottom is PID input and top is output.
Likewise add arrowheads to pulse generator.
The point is you let PID control the pulse width to make correct average voltage over at VC.. That's the basis of feedback control - continually measure , compare, adjust.
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jim hardy
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Kasim said:
Your most recent addition looks right , but now you have two PID's.
Erase that first one you drew and it could work.
- #7
Kasim
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Yeah was just a rough sketch.. Thanks alot
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jim hardy
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Good luck!
Related to Design a Voltage Feedback Loop w/ PID Controller
What is a voltage feedback loop?
A voltage feedback loop is a control system that uses an output voltage signal to adjust the input voltage, creating a closed loop. This allows for precise control of a system's output based on a desired setpoint.
What is a PID controller?
A PID (Proportional-Integral-Derivative) controller is a type of feedback controller that uses a combination of proportional, integral, and derivative actions to adjust the input voltage in a voltage feedback loop. It is commonly used in engineering and industrial applications to control systems with complex dynamics.
How do you design a voltage feedback loop with a PID controller?
To design a voltage feedback loop with a PID controller, you must first determine the desired setpoint and the system's dynamics. Next, you must select appropriate values for the proportional, integral, and derivative gains, which can be done through experimentation or using mathematical models. Finally, the PID controller must be implemented in the feedback loop and tuned to achieve the desired performance.
What are the benefits of using a voltage feedback loop with a PID controller?
A voltage feedback loop with a PID controller offers several benefits, including precise control and stability of a system's output, the ability to handle systems with complex dynamics, and the ability to adjust to changes in the system's environment or parameters.
What are some common applications of voltage feedback loops with PID controllers?
Voltage feedback loops with PID controllers are commonly used in a wide range of applications, including temperature control systems, industrial process control, robotics, and motor control in electric vehicles. They are also commonly used in household appliances such as ovens, refrigerators, and air conditioners.
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