iC House
Automatic position correction and multiturn
The PVL4M development board offers the combination of a TMR angle sensor (in this application the "TA903" from Sensitec) with the "iC-PVL" Hall sensor from iC-Haus for absolute angle measurement and revolution counting at the free end of the axis, the so-called end-of-shaft position.
The 26-bit encoder signal processor "iC-TW29" with integrated EEPROM evaluates the two sensors from iC-Haus; various iC-TW29 evaluation boards are available for combination with the sensor board. The sine/cosine signals of the TMR sensor are processed in the chip, interpolated and output with a freely selectable resolution, for example via BiSS with an angular resolution of 18 bits and a number of revolutions of 24 bits.
Thanks to the super-cap on the sensor board, iC-PVL enables uninterrupted revolution counting, even over several hours without an external power supply. The data output follows the axis angle with a delay of just 1.5 μs, which is very similar to optical encoders, according to the provider.
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