Question

A stepper motor with a step angle $1.8^\circ$ requires ______ steps per one revolution.

• A. 180
• B. 200
• C. 360
• D. 100

Hint:

A step angle of \(1.8^\circ\) is the most common standard for industrial stepper motors (often called 200-step motors).
For half-stepping mode, the step angle is halved to \(0.9^\circ\), which doubles the steps per revolution to 400 for increased resolution.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question asks for the number of steps required by a stepper motor to complete one full revolution (\(360^\circ\)) when its step angle is given as \(1.8^\circ\).

Step 2: Key Formula or Approach:
The number of steps per revolution (\(N_s\)) is related to the step angle (\(\beta\)) by the formula:
\[ N_s = \frac{360^\circ}{\beta} \] where \(\beta\) is the step angle in degrees.

Step 3: Detailed Explanation:

• Identify the given step angle:
\[ \beta = 1.8^\circ \]
• Substitute the value of \(\beta\) into the formula:
\[ N_s = \frac{360^\circ}{1.8^\circ} \]
• Simplify the division:
\[ N_s = \frac{3600}{18} = 200 \]
• Therefore, the stepper motor requires exactly 200 steps to complete one full revolution of \(360^\circ\).

Step 4: Final Answer:
The number of steps required per revolution is 200.