I asked for Arduino code to balance inverted pendulum with Fuzzy logic controller. Here is what got supplied. Seems simple enough. Have never used fuzzy logic and want to compare it with PID controller.
#include <Fuzzy.h>
// Define input and output variables
FuzzySet inputAngle[NB_INPUT];
FuzzySet outputForce[NB_OUTPUT];
FuzzyRuleAntecedent antecedent[NB_RULE];
FuzzyRuleConsequent consequent[NB_RULE];
Fuzzy Logic fuzzy;
// Initialize the fuzzy logic system
void setupFuzzyLogic() {
// Define input variable 'Angle'
inputAngle[ANGLE_NEGATIVE] = FuzzySet(-90, -60, -30);
inputAngle[ANGLE_ZERO] = FuzzySet(-30, 0, 30);
inputAngle[ANGLE_POSITIVE] = FuzzySet(0, 60, 90);
// Define output variable 'Force'
outputForce[FORCE_NEGATIVE] = FuzzySet(-255, -127, 0);
outputForce[FORCE_ZERO] = FuzzySet(-127, 0, 127);
outputForce[FORCE_POSITIVE] = FuzzySet(0, 127, 255);
// Define fuzzy rules
antecedent[0] = FuzzyRuleAntecedent(&inputAngle[ANGLE_NEGATIVE]);
antecedent[1] = FuzzyRuleAntecedent(&inputAngle[ANGLE_ZERO]);
antecedent[2] = FuzzyRuleAntecedent(&inputAngle[ANGLE_POSITIVE]);
consequent[0] = FuzzyRuleConsequent(&outputForce[FORCE_POSITIVE]);
consequent[1] = FuzzyRuleConsequent(&outputForce[FORCE_ZERO]);
consequent[2] = FuzzyRuleConsequent(&outputForce[FORCE_NEGATIVE]);
fuzzy.begin(antecedent, consequent, NB_RULE);
}
// Define input and output variables
float input[1];
float output[1];
void setup() {
// Initialize your sensors and actuators here
setupFuzzyLogic();
}
void loop() {
// Read the angle from your sensor (adjust as needed)
float angle = readAngleSensor();
// Fuzzify the input
input[0] = angle;
// Perform fuzzy logic inference
fuzzy.fuzzify(input, output);
// De-fuzzify the output
int controlForce = output[0];
// Apply the control force to the actuator (adjust as needed)
applyControlForce(controlForce);
}
// Define your sensor reading function (replace with actual sensor reading)
float readAngleSensor() {
// Replace this with your actual sensor reading code
return 0.0; // Dummy value for demonstration
}
// Define your actuator control function (replace with actual actuator control)
void applyControlForce(int force) {
// Replace this with your actual actuator control code
// This could involve controlling a motor, for example
}