1. What is the Brushless Motor Torque Equation?

The brushless motor torque equation (T = Kt × I) calculates the torque output of a brushless DC motor based on its torque constant and the current flowing through it. This fundamental equation helps in understanding and predicting motor performance in various applications.

2. How Does the Calculator Work?

The calculator uses the brushless motor torque equation:

Where:

• \( T \) — Torque output (Nm)
• \( Kt \) — Torque constant (Nm/A)
• \( I \) — Current (A)

Explanation: The torque constant (Kt) is a motor-specific parameter that relates the current input to the torque output. Higher Kt values indicate more torque produced per ampere of current.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for motor selection, system design, and performance optimization in applications ranging from robotics and drones to industrial automation and electric vehicles.

4. Using the Calculator

Tips: Enter the torque constant in Nm/A and current in amperes. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the torque constant (Kt)?
A: The torque constant is a motor parameter that indicates how much torque the motor produces per ampere of current. It is typically provided in the motor's datasheet.

Q2: How does current affect motor torque?
A: Torque is directly proportional to current - doubling the current doubles the torque output, assuming the motor operates within its limits.

Q3: What are typical Kt values for brushless motors?
A: Kt values vary widely depending on motor size and design, typically ranging from 0.01 Nm/A for small motors to several Nm/A for large industrial motors.

Q4: Does this equation account for motor efficiency?
A: This equation gives the theoretical torque output. Actual torque may be slightly lower due to various losses including friction, iron losses, and copper losses.

Q5: Can this equation be used for all motor types?
A: This specific equation is primarily for brushless DC motors. Other motor types (AC induction, brushed DC, stepper) have different torque characteristics.