1. What is the Torque Formula?

The torque formula T = Kt × I calculates the torque produced by an electric motor based on its torque constant (Kt) and the current (I) flowing through it. This relationship is fundamental in motor control and electromechanical systems.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Newton-meters, Nm)
• \( Kt \) — Torque constant (Newton-meters per Ampere, Nm/A)
• \( I \) — Current (Amperes, A)

Explanation: The torque constant (Kt) represents how much torque a motor produces per ampere of current. This linear relationship assumes ideal conditions and constant magnetic fields.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for motor selection, sizing mechanical systems, predicting performance, and ensuring proper operation in applications ranging from industrial machinery to robotics and automotive systems.

4. Using the Calculator

Tips: Enter the torque constant in Nm/A and current in Amperes. Both values must be positive numbers (current can be zero, torque constant must be greater than zero).

5. Frequently Asked Questions (FAQ)

Q1: What is a typical torque constant value?
A: Torque constant values vary by motor type and size. Small DC motors might have Kt values around 0.01-0.1 Nm/A, while larger industrial motors can have values exceeding 1 Nm/A.

Q2: Does this formula work for all motor types?
A: This formula works best for DC motors and brushless DC motors. For AC induction motors, the relationship is more complex due to power factor and slip.

Q3: How does temperature affect torque calculation?
A: Temperature can affect winding resistance and magnetic properties, which may slightly alter the torque constant. For precise applications, temperature compensation may be needed.

Q4: Can I calculate current from torque using this formula?
A: Yes, the formula can be rearranged as I = T / Kt to calculate the required current for a desired torque output.

Q5: What are the limitations of this formula?
A: This formula assumes linear magnetic characteristics and doesn't account for saturation, friction losses, or efficiency factors that may affect real-world performance.