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ChatGPTExample
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ChatGPTExample
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// PID controller constants
double kp = 1.0; // Proportional gain
double ki = 0.2; // Integral gain
double kd = 0.1; // Derivative gain
// PID controller variables
double setpoint = 50.0; // Desired temperature
double input = 0.0; // Current temperature
double output = 0.0; // Heater control output
double error = 0.0; // Current error
double prev_error = 0.0; // Previous error
double integral = 0.0; // Integral term
double derivative = 0.0; // Derivative term
// PID controller update function
void update_pid() {
// Calculate error
error = setpoint - input;
// Calculate integral
integral += error;
// Calculate derivative
derivative = error - prev_error;
// Calculate output
output = kp * error + ki * integral + kd * derivative;
// Update previous error
prev_error = error;
// Apply output
// In this example, the output is used to control a heater
// The value of output can be converted to a PWM signal to drive the heater
// Note that the output should be limited to prevent overshoot and instability
// In this example, the output is limited to a range of 0-255
output = constrain(output, 0, 255);
analogWrite(HEATER_PIN, output);
}
void setup() {
// Initialize input and output pins
pinMode(INPUT_PIN, INPUT);
pinMode(HEATER_PIN, OUTPUT);
}
void loop() {
// Read input
input = analogRead(INPUT_PIN);
// Convert input to temperature
// In this example, the input is assumed to be a voltage that is proportional to temperature
// The conversion factor depends on the sensor and can be calibrated
input = (input * 5.0 / 1023.0 - 0.5) * 100.0;
// Update PID controller
update_pid();
// Delay for a short time to allow the system to respond
delay(100);
}
//This is just a basic example, so you'll need to modify it to fit your specific requirements.
//For example, you'll need to adjust the PID constants to achieve the desired performance,
//and you'll need to read the input from the appropriate sensor for your application.