Speed, torque, and horsepower are three inter-related parameters in motor control. The speed of a motor, measured in revolutions per minute (rpm), defines a motor's ability to spin at a rate per unit ...

A motor drive controls the speed, torque, direction, and resulting horsepower of a motor. Dc drives typically control a shunt-wound dc motor, which has separate armature and field circuits.

The 3.2 kg (7 lb) motor houses an automatic shifting dual-speed transmission. When riders engage the drive, the bike measures the current speed and shifts accordingly to adjust the motor output.

The new motor driver ICs enable Renesas customers to design sensorless BLDC motor systems with higher horsepower and speed at a given torque.

Torque is constant. And it conforms to the torque formula. Torque (lb-in) = 63,025 * HP / Speed (RPM) Voltage-to-frequency ratio is constant, too. For example: 230 V/30 Hz equals 460 V/60 Hz ...

Was the motor applied properly? In other words, does it have enough starting or acceleration torque? If it is a shaded-pole motor, you may need to use a permanent split capacitor (PSC) type. (This is ...

The motor is capable of spinning 18,000 rpm, and the value of the two-speed transmission is indicated by the red and amber lines on the axle torque versus speed curve shown.

Common turndown ratios are 10:1, 20:1, and 1000:1, with some motors even designed to provide “holding torque” – that is, torque at zero speed.

Almost two years ago, a research team showed that it was possible to get fine motor control from cheap, brushless DC motors. Normally this is not feasible because the motors are built-in such a way… ...

Salvaging a beefy motor is one life’s greatest pleasures for a hacker, but, when it comes to using it in a new project, the lack of specs and documentation can be frustrating. [The Post Apoca… ...

The optimum stall speed and torque multiplication of a converter is achieved with R&D time on a dynamometer. TCI has an in-house dynamometer that uses a 900hp engine.

It’s called the Hunstable Electric Turbine, or HET, and it features what Linear Labs claims is the first real re-think of how an electric motor works. The secret sauce? The Magnetic Torque Tunnel.