Questions tagged [pid-controller]
A PID controller is a (closed) control loop feedback mechanism. It is used in industral control for proportional, integral and derivative feedback.
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Disturbance error transfer function
I was trying to solve some examples from the book Feedback Control of Dynamic Systems by Franklin, Powell & Emami-Naemi. (Seventh Edition, Pages 195 & 204) about PID controllers. The problem ...
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How to handle the noise and wrong measurements due to the actuator in a close-controlled loop [closed]
My system has to inflate a rubber device using a diaphragm pump to a specified pressure (about 1000 Pa, with an ideal accuracy of ±50 Pa). The volume of the device is about 3 L.
The pump is connected ...
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PID controller too slow even P is changed
I had a extech 48VFL PID controller. The settings are all in default values except P, I, and D. I set them to be 100, 3600, and 60. Just random numbers. I found it's heating super slow, it has been ...
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Transfer function of differential controller
I found an op amp circuit that is designed to be a derivative controller (D-controller)
simulate this circuit – Schematic created using CircuitLab
and the transfer function $$ \frac{V_o}{V_i} = ...
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Seeking examples where PID control fails [closed]
I seek examples of systems that are difficult to control using standard PID control. In particular, examples where the output eventually becomes unstable despite being stable initially.
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Heating element with SSR
I have a 3-phase, 240 V, 3 kW heating element that I intend to control via PLC ==> PWM==> SSR.
In case this control methods fails electrically, how do I prevent (limit) my heating element to go ...
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Using Integral of Error as Input in Fuzzy Logic Controllers
I'm currently working on a control system for a doubly fed induction generator (DFIG) as part of my thesis project. Traditionally, fuzzy logic controllers (FLCs) use the error (e) and the derivative ...
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Differential Equation Classes for Arduino-Python Control
I am working with Python and an Arduino. I am trying to implement a control in continuous time, thus I need to create an approximation of the next step using numerical methods. I would like to ask if ...
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Controll PD with Python
I'm applying a Proportional-Derivative controller to control my robot, but I don't understand why the robot's position doesn't reach the desired position. Can someone help me understand what the error ...
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Multi-loop systems block reduction techniques
Do I start by multiplying 18/s+3 * 1/s+3 = 18/(s+3)^(2)?
Then is it (18/(s+3)^(2))/(1+(18/(s+3)^(2)*4)) = 18 / ((s + 3)^2 * (72 / (s + 3)^2 + 1))?
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Running 2 small cartridge heater and 2 Solid State Relay (SSR) with 1 PID Controller
I wanted to run a heating setup that processes optical fiber for tapering and making couplers (I am in photonics). I aim to reach 810C of temperature, whereas I am getting only 780C. Currently I use:
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How to use an emergency button for an SSR controlling 3kW heaters
I'm working on a temperature control project for airflow utilizing a 3kW heater, an SSR, and a PID controller.
For safety purposes, I need to incorporate an emergency button to immediately cut off ...
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Multiple PWM Generation using PI Controller
I am using dual loop to control dc-dc boost converter using Arduino Uno in Proteus. The kp and ki work fine for individual implementation of each boost converter. But when I combine them like this, I ...
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Solenoid valve gating and time proportional control
I'm trying to complete this simple task:
I have solenoid valves to control the humidity in an array of boxes. I use time proportional PID control to turn them on or off. I suspect I keep wearing them ...
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Design a PID controller for a MG=1.5
Consider the following system:
I need to design a PID controller with a gain margin of 1.5 for the disturbance P(s).
In order to have a certain gain margin I need to find the critical gain Ku, so ...
