📘 第10篇：Stepper Motors vs Servo Motors

# Stepper Motors vs Servo Motors: Key Differences and Use Cases

Stepper and servo motors are essential in precision motion control systems. Each has unique strengths and is suited for specific tasks.

## 🔁 What Are Stepper Motors?

Stepper motors move in fixed angular increments (steps). Great for open-loop control and precision.

### ✅ Pros:
- Simple control
- Cost-effective
- Accurate in open-loop systems

### ❌ Cons:
- Can lose steps under heavy load
- Low efficiency at high speeds

## 🔄 What Are Servo Motors?

Servo motors provide closed-loop control, using feedback to adjust position and speed in real time.

### ✅ Pros:
- High accuracy and torque
- Better efficiency
- Feedback enables error correction

### ❌ Cons:
- Higher cost
- Requires controller and encoder

## 📊 Comparison Table

| Feature         | Stepper Motor     | Servo Motor       |
|------------------|-------------------|--------------------|
| Control          | Open-loop         | Closed-loop        |
| Torque           | High at low speed | High across range  |
| Accuracy         | Moderate           | Very high          |
| Efficiency       | Low               | High               |
| Cost             | Lower              | Higher             |

## 🛠 Applications

- **Stepper**: 3D printers, CNC, cameras
- **Servo**: Robotics, conveyor belts, drones

## ✅ Conclusion

Use stepper motors for budget-conscious precision tasks, and servo motors where dynamic response and feedback are essential.