FAG Torque and Speed Sensor
Resource from: FAG Torque and Speed Sensor Likes:3036
Sep 10,2010
Assistance on demand: Precise control makes e-bikes more attractive
Schaeffler Group Industrial is extending its range of bottom bracket units for e-bikes with a newly-developed torque and speed sensor bottom bracket under its FAG brand. The total torque from the sum of the pedal force from the left and right pedals is determined for the first time. The new FAG torque sensor bottom bracket is used, among other applications, in the new high-performance drive from Bosch and is being presented for the first time at Eurobike 2010 in Friedrichshafen.
Correct detection of the rider’s requirement for motor assistance depending on the riding situation and corresponding control of the power output are decisive factors for a positive riding feel on e-bikes. Besides the direction of rotation and speed, measurement of the exact torque produced by the rider during pedaling is a prerequisite for precisely determining the additional power requirement. The additional drive power provided by the electric motor is controlled principally by the torque sensor system in the bottom bracket. The rider no longer needs to provide additional “pedal power”.
Increased comfort, improved range:
The new FAG torque sensor bottom bracket is characterized by the high-resolution speed signal and the accuracy of the torque sensor system. These characteristics are a prerequisite for the quality of the output signal and rapid response of the motor control system. The rider is thus provided with optimum assistance in every situation. This is associated not only with increased comfort, but also with maximum efficiency, which results in an increase of the range. The drive characteristics of the new Bosch drive can be programmed and matched to the type of bicycle in up to four levels - eco, tour, sport and speed. A degree of assistance up to 250 percent (speed) is available depending on the mode and assistance level.
Two different non-contact measuring methods are used in the compact bottom bracket unit. The speed and direction of rotation are measured by a Hall effect sensor, while torque measurement is carried out by means of a magneto-elastic method. The measurement range is between 0 and 90 Nm with an accuracy of up to one percent. Up to 300 Nm is optionally available in professional applications, for example, for performance measurement on racing bicycles. Additional applications are ergometers in the fitness or rehabilitation sectors.
Smooth running due to FAG Generation C ball bearings:
Like all bottom bracket units from FAG, the new torque sensor bottom bracket is characterized by its excellent smooth running characteristics. This has been facilitated by an optimized bearing arrangement and the use of the newly-developed FAG Generation C deep groove ball bearings, which have around 30 percent less friction compared with previous models. Numerous components in the area of the shaft are also coated with Corrotect® corrosion protection developed by Schaeffler.
Contact Details:
Schaeffler Technologies GmbH & Co. KG Communication
Schaeffler Group Industrial Georg-Schäfer-Straße 30 97421Schweinfurt
Tel. +49 9721 91-3400
(FAG Torque and Speed Sensor)
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1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.
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