A torque motor is a specialized form of DC electric motor which can operate indefinitely while stalled, without incurring damage. In this mode of operation, the motor will apply a steady torque to the load (hence the name). A torque motor that cannot perform a complete rotation is known as a limited angle torque motor.
Why do we torque a motor?
Direct-drive torque motors deliver high torque over a wide range of speed, from a standstill or low speed condition to high angular velocities. While torque motors can achieve high velocities (up to 5450 rpm), there is a trade-off in torque as the motor becomes limited by speed dependent losses increase.
What is motor torque based on?
Load Torque ( T )
As you see this equation torque is the product of the force and the distance between the force and the center of rotation. For example, if you want to hold the force acting on the end of pulley, T = F x r.
What makes a motor high torque?
The higher the voltage, the higher the torque. The voltage rating of a DC motor indicates the most efficient voltage while running. … Operating torque is the amount of torque the motor was designed to give and stall torque is the amount of torque produced when power is applied from stall speed.
Why do machines use low torque motors?
Torque motors are commonly used in machine tools on their indexing tables. This is because a torque motor is a low profile addition to an already large machine, and is able to provide a great amount of torque to quickly accelerate and hold large pieces of metal in place.
Which motor is used for high torque?
Series wound DC motors are best for applications that require high startup torque, without the need for speed regulation. Like a shunt motor, as a load is applied to a DC series motor, the motor speed decreases, which reduces the back EMF and increases the net voltage.
How is motor torque calculated?
To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r). If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm.
How is rated torque calculated?
- Torque (lb.in) = 63,025 x Power (HP) / Speed (RPM)
- Power (HP) = Torque (lb.in) x Speed (RPM) / 63,025.
- Torque (N.m) = 9.5488 x Power (kW) / Speed (RPM)
- Power (kW) = Torque (N.m) x Speed (RPM) / 9.5488.
How much torque is required to move a car?
so rotational speed = Power / torque = 50,000 / 160 = 312.5 rad/s = 2984 rpm. Therefore a 50 kw motor, running at almost 3,000 rpm and producing a torque of 160 Nm, can accelerate a 200 kg vehicle at 4g up to a speed of 14 mph providing the vehicle is fitted with a suitable traction system.
What is better to have torque or horsepower?
Both horsepower and torque can affect the speed of a vehicle. Torque can help a vehicle accelerate to a higher speed quickly, whereas horsepower can help a vehicle improve its top speed.
What is the use of high torque motor?
Driven from a higher voltage, (and so delivering a higher torque), the torque motors can also achieve fast-forward and rewind operation without requiring any additional mechanics such as gears or clutches.
How do you make an electric motor more powerful?
We can increase the turning force (or torque) that the motor can create in three ways: either we can have a more powerful permanent magnet, or we can increase the electric current flowing through the wire, or we can make the coil so it has many “turns” (loops) of very thin wire instead of one “turn” of thick wire.
How much torque does a 1 hp motor have?
The 3600 RPM, 1HP motor produces 1.5 ft. lbs. of torque at 3600 RPM. So if your 1HP pump was operating at 1800 RPM, the 1800 RPM motor would be producing 3 ft.
What are the benefits of torque?
Top 6 Benefits Of Torque Motor Technology
- Simplified Integration. Direct drive torque motors consist of two parts: an inner magnetic rotor that drives rotation and an outer stator that transmits torque via electrical coil windings. …
- Increased Accuracy. …
- Reduced Cost Of Ownership. …
- No Backlash. …
- High Torque At Low Speeds. …
- Minimal Noise, Vibration And Torque Ripple.
What gives an electric motor torque?
Electric motors operate on three different physical principles: magnetism, electrostatics and piezoelectricity. In magnetic motors, magnetic fields are formed in both the rotor and the stator. The product between these two fields gives rise to a force, and thus a torque on the motor shaft.
What is DC motor torque?
When the current-carrying current is placed in the magnetic field, a force is exerted or it which exerts turning moment or torque F x r. … This torque is produced due to the electromagnetic effect, hence is called Electromagnetic torque.