Feedback control

principle · 1788 · Industrial Revolution

A controller compares the result with the goal and corrects the process.

Where it is used

• Centrifugal governor — is used in. The governor is a classic example of feedback.
• Servomotor — is used in. The position is constantly compared with the target.
• Anti-lock braking system (ABS) — is used in. A controller watches for wheel slip.
• Cruise control — is used in. Speed is held by feedback.
• Quadcopter (drone) — is used in. The flight controller holds the position.
• Autopilot — is used in. Holding a course by feedback.
• Engine control unit — is used in. Control based on sensors.
• Segway — is used in. Balancing.
• Electric unicycle — is used in. Balancing.
• Fly-by-wire — is used in. Automatic stabilization.
• Industrial automation — is used in. Control.
• Operational amplifier — is used in. Feedback sets the gain.

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