SwitzerlandNodAlmagrotorquesensorTM306

NodThe company is a manufacturer of motor testing equipment, hysteresis brakes, and clutches,SwitzerlandNodMagro sensorTM306

60For many years,Magtrol Inc.andEnroll inAlways providing customers with high-quality products for testing, measuring, and controlling torque-speed-Power and load-力-Weight, tension, and displacement. Located in SwitzerlandEnroll inWe also provide motor testing equipment and measure, control, and monitor loads-力-Products with weight and displacement.

SwitzerlandNodMagro sensorTM306

Main products:

Nodbrake

Nodsensor

Noddisplacement sensor

Nodtorque sensor

Nodsignal amplifier

SwitzerlandNodMagro torque sensorTM306 Pure hysteresis brakes generate torque entirely through magnetic air gaps, without the use of magnetic particles or friction components. This braking method has its excellent operational characteristics (smoother torque, longer lifespan, repeatability, high controllability, and less maintenance and downtime), which makes them suitable for tension control in almost any material or coil processing process.

Non contact torque sensor

SwitzerlandNodtorque sensorTM306

The input shaft and output shaft of the non-contact torque sensor are connected by a torsion bar,

There are splines on the input shaft and keyway on the output shaft.

When the torsion bar is twisted by the rotational torque of the steering wheel,

The relative position between the keyway on the input shaft and the keyway on the output shaft is changed.

The relative displacement change of the spline and keyway is equal to the torsion of the torsion rod,

Causing a change in the magnetic induction intensity on the spline,

Convert into voltage signals through coils.

Non contact torque sensors, due to their non-contact working mode,

Therefore, it has a long lifespan, high reliability, is less susceptible to wear and tear, and has less delay

It is less affected by shaft deflection and axial offset and has been widely used in the field of sedans.

In non-contact torque sensors, commonly used sensors include strain gauges, magneto electric sensors, fiber optic sensors, and photoelectric sensors.

Strain gauge non-contact sensors utilize wireless transmission technology. With the advancement of technology and the development of wireless transmission technology, the conductive slip ring and brush arm used for the output signal of contact strain gauge sensors can now be replaced by wireless transmission modules, thereby overcoming the wear between the conductive slip ring and brush arm and improving measurement accuracy.

The magneto electric torque sensor utilizes the principle of magneto electric conversion to analyze the phase difference between the two output electromotive force signals, thereby achieving the purpose of measuring torque. It is mainly divided into closed circuit sensors and open circuit sensors.

Fiber optic torque sensors mainly use the principles of light reflection and phase difference to read the light signals reflected at two corresponding positions on the shaft and calculate the phase difference, thereby calculating the corresponding torque value. However, fiber optic sensors are susceptible to environmental influences and installation and debugging are relatively difficult.

The photoelectric torque sensor has a photoelectric sensing element as its core component. When torque is applied to the transmission shaft, the intensity of the light emitted by the light source will change accordingly, resulting in a change in the output current of the photoelectric element. By measuring the change value, the torque value can be calculated. [3]

Strain gauge torque sensor

The torque measurement of strain gauge sensors adopts strain electrical measurement technology.

Attach strain gauges to the elastic axis to form a measuring bridge,

When the elastic shaft undergoes slight deformation due to torque, it causes a change in the resistance value of the bridge,

The change in resistance of the strain bridge is converted into a change in electrical signal to achieve torque measurement.

The sensor completes the following information conversion;

The sensor consists of an elastic shaft, a measuring bridge, an instrument amplifier, and an interface circuit.