Application Catalog


2018-04-18

sensor



248 - Analysis of a Variable Reluctance Resolver

248 - Analysis of a Variable Reluctance Resolver

To measure the angular position / speed of a rotating element there are different available devices. Encoder (incremental, absolute) or Resolvers. Since the resolver is composed only of iron cores and coils, it is more robust than the rotary encoder about environmental resistance. So, it is used for power system motors and EPS which require high environmental resistance.

Module: DP | 2018-04




244 - Analysis of Magnetic Field Intensity at Sensor Position

244 - Analysis of Magnetic Field Intensity at Sensor Position

In controlling the position and speed of motors, actuators, etc., it is necessary to detect the position of moving parts and calculate command values based on those signals. Methods for sensing magnetic flux leakage generating from a target object as ways of detecting positions are widespread. Sensing types range from those that use electromagnetic induction by pickup coil, to methods that use the Hall effect and magnetic resistance effect. Regardless of the frequency of the detection target, practical use of these latter methods has begun to advance in recent years because of the possibility to obtain signals corresponding to the magnitude of magnetic flux density.

Module: DP | 2018-04




102 - Magnetic Field Analysis of a Magnetic Sensor

102 - Magnetic Field Analysis of a Magnetic Sensor

With recent improvements in the functionality of electric devices and home appliances, magnetic sensors are being used more for contactless sensing of whether device doors, etc. are open or closed. An open/closed switch using a magnetic sensor switches between open and closed...

Module:ST | 2013-12




28 - Magnetic Field Analysis of a Speed Sensor

28 - Magnetic Field Analysis of a Speed Sensor

Antilock brake systems (ABS) have become a standard feature in vehicles, so speed sensors are attached to each wheel in order to measure their respective speeds. There are several methods of detecting rotation speed, but magnetic sensors are weather resistant and have a small number of parts because there only...

Module:TR | 2017-10