Feedback Control: Utilizing Output for Plant's Input Adjustment

Feedback control is the utilization of plant output to generate control inputs for the plant.

### Feedback Control: Definition, Concept, and Application with Air Conditioning Example
* 🔒 "Feedback control" in this textbook refers to using the plant's output as the controller's input to generate control inputs for the plant, with a focus on **feedback control**.
* 🤖 The concept of feedback control is introduced as "**뛰듯**," which means modeling, imitation, or simulation in Korean.
* 💯 It involves comparing the current situation with the desired outcome, and coming up with a solution to **achieve the desired results**, such as "**Fit 100 Control**."
* 🚗 Well-known examples of feedback control include **cruise control for maintaining a car's speed** and **regulating room temperature with an air conditioner**.
* ❄ In the air conditioning example, the desired room temperature is set using a remote control, and a temperature sensor provides feedback to the air conditioner to **maintain the set temperature**.
* 🔧 The air conditioner continuously adjusts the cooling based on the **feedback from the sensor** to keep the **room temperature stable**.
* 🏠 This process of comparing the desired state with the actual state and making adjustments based on feedback is the **essence of feedback control**.

[제어공학 뽀개기] 1-3. Feedback Control of Dynamic System - Feedback Control (피드백 제어/폐루프제어)

Jeongwon Lee

The Definition of Feedback Control in the Textbook

The textbook defines feedback control as using the plant's output to generate control inputs, with a focus on the relationship between the plant and the controller.

In Korean, "뛰듯" means modeling, imitation, or simulation, which will be discussed later.

The author shares a personal experience and relates it to the concept of "seeding 100," emphasizing the pressure to succeed in control.

Implementing the Fit 100 Control Method for Study

The Fit 100 Control method involves studying for 12 hours a week and aiming for desired results.

Feedback control is illustrated through examples like cruise control and air conditioning temperature regulation.

The goal is to use the air conditioner to achieve a room temperature between 5 and 20 degrees Celsius, demonstrating the concept of setting and maintaining a specific condition.

Controlling Air Conditioner Temperature with Feedback

Pressing the Live Con button sends a miraculous signal to the air conditioner to set it to 20 degrees.

The air conditioner then sends an electrical signal to turn on and a physical signal to lower the temperature to 25 degrees.

The feedback control, using a temperature sensor, allows the air conditioner to continuously adjust and maintain the desired temperature, preventing it from dropping too low.

The Principle of Feedback Control in Air Conditioning

Air conditioners adjust their output based on room temperature, using a feedback control system.

When the set temperature and the actual room temperature are close, the air conditioner stops blowing cold air, allowing the room to gradually warm up before readjusting.

This process helps maintain a consistent temperature and is crucial for comfort.