stepping motor
Definition
Noun: A stepping motor is a type of electric motor designed to move or rotate in small, precise, and discrete angular steps rather than continuously. It converts digital electrical pulses into mechanical shaft rotation, with each pulse causing the motor to rotate by a fixed angle.
Usage
A stepping motor is used in applications requiring precise positioning, speed control, or synchronization without the need for feedback sensors. It is controlled by a digital signal.
Examples
- The stepping motor in the 3D printer ensures the print head moves with extreme accuracy.
- To move the telescope to the correct coordinates, the system uses a high-torque stepping motor.
- The engineer selected a stepping motor for the automated valve because it could be positioned reliably without an encoder.
Advanced Usage
- Full-step mode: The standard driving mode where the motor moves one full step per pulse.
- Half-step or microstepping: Advanced control techniques that electronically divide a full step into smaller increments for smoother motion and higher resolution.
- Holding torque: The maximum torque a stationary, energized stepping motor can exert without moving. This is a key specification.
Variants and Related Words
- Stepper motor: A common synonym for stepping motor.
- Step motor: A shortened, informal variant.
- Brushed/Brushless DC Motor: Types of motors that rotate continuously, contrasting with the discrete movement of a stepping motor.
- Servo Motor: A motor that uses feedback for precise control, often compared with open-loop stepping motor systems.
Synonyms
- Stepper
- Stepper motor
- Step motor
Related Phrases
- Open-loop control: A common characteristic of stepping motor systems, where the controller assumes the motor has reached the commanded position without verifying it with a sensor.
- Step angle: The angular distance the motor shaft rotates for each input pulse (e.g., 1.8° or 0.9°).
- Missed step: A condition where a stepping motor fails to move in response to a pulse, often due to excessive load or speed.
Noun
-
a motor (especially an electric motor) that moves or rotates in small discrete steps
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