### **Control Systems
### **1. Types of Control Systems**
#### **(a) Open-Loop Control System**
- **No feedback** (output is not checked).
- Works on a fixed input command.
- **Example:** Electric hand dryer (runs for a set time, doesn’t check if
hands are dry).
#### **(b) Closed-Loop Control System**
- Uses **feedback** to compare output with desired result.
- Adjusts itself for better accuracy.
- **Example:** Air conditioner (checks room temperature and adjusts
cooling).
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### **2. Key Terms**
- **Input (Reference):** Desired value (e.g., setting AC to 24°C).
- **Output (Controlled Variable):** Actual result (e.g., current room temp).
- **Feedback:** Sending output back to compare with input.
- **Controller:** Decides action (e.g., increases cooling if room is hot).
- **Plant/Process:** The system being controlled (e.g., AC unit).
---
### **1. Types of Control Systems**
#### **(a) Open-Loop Control System**
- **No feedback** (output is not checked).
- Works on a fixed input command.
- **Example:** Electric hand dryer (runs for a set time, doesn’t check if
hands are dry).
#### **(b) Closed-Loop Control System**
- Uses **feedback** to compare output with desired result.
- Adjusts itself for better accuracy.
- **Example:** Air conditioner (checks room temperature and adjusts
cooling).
---
### **2. Key Terms**
- **Input (Reference):** Desired value (e.g., setting AC to 24°C).
- **Output (Controlled Variable):** Actual result (e.g., current room temp).
- **Feedback:** Sending output back to compare with input.
- **Controller:** Decides action (e.g., increases cooling if room is hot).
- **Plant/Process:** The system being controlled (e.g., AC unit).
---
