Multi-Turn Position Sensing Fundamentals
Chapter 5
When an automated assembly line unexpectedly
loses power, traditional robotic systems often
require lengthy recalibration procedures,
leading to costly downtime. However, modern
multi-turn position sensors retain precise
position data even without power, enabling
immediate and accurate restarts. This capability
eliminates cumbersome homing sequences,
boosts efficiency, and significantly reduces
downtime—highlighting the growing importance
of advanced position tracking technology.
The demand for efficient, reliable, and compact position
sensing solutions has never been greater in industrial
automation. The ADMT4000 is a single-chip multi-turn
position sensor set to transform the management
of encoders and actuators in industrial automation,
robotics, and the emerging humanoid field.
Traditional Multi-Turn Solutions and
Their Limitations
Traditionally, angle sensors available on the market,
such as Hall Effect, XMR family (AMRs, GMRs, TMRs),
resolvers, inductive solutions, and optical encoders,
have been limited to an absolute measurement
range of 360 degrees. While these sensors operate
without power and contact within this range, they are
insufficient for applications that require multi-turn
position sensing. The AMR angle sensor, which repeats
signals every 180 degrees, is the only exception to the
360-degree restriction.
14
Engineering Reliable Industrial Automation With Sensor Fusion
