Torque in a brushless motor is calculated by multiplying the motor's winding current by the number of turns in the motor's winding and the number of poles in the motor's rotor. This is known as the motor's torque constant and is measured in units of Nm/A.
The torque of a brushless motor is affected by several factors including the motor's size, the current flowing through the motor, the number of turns in the motor's winding, and the strength of the motor's magnets. Additionally, external factors such as load and friction can also impact the motor's torque.
The torque of a brushless motor is inversely proportional to its speed. This means that as the speed of the motor increases, the torque decreases and vice versa. This relationship is known as the speed-torque curve and is important to consider when selecting a brushless motor for a specific application.
Yes, the torque of a brushless motor can be increased by increasing the current flowing through the motor, increasing the number of turns in the motor's winding, or using stronger magnets in the motor's rotor. Additionally, using a gearbox can also increase the torque output of a brushless motor.
The torque of a brushless motor is typically tested and measured using a dynamometer. This device applies a load to the motor and measures the resulting torque output. The torque can also be calculated using the motor's torque constant and the measured current and speed of the motor.