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CambridgeIC's resonant inductive position sensors measure the precise position of a target.
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Demands for smoothness, efficiency and cost effectiveness drive motor control design. Technologies including optical or magnetic encoders, resolvers or sensorless control are traditional solutions, but none really nails all three demands well on its own. CambridgeIC's CAM502 IC used with Type 6 Precision Through Hole Rotary Sensors offers an attractive alternative.
Stepper motors are simple to drive and control. However there is a risk of losing step when current is kept low to save on energy use. Sensorless feedback can help detect a stall condition, but it requires careful tuning and can not provide the same reassurance as checking the physical shaft angle with a position sensor. Optical encoders are traditional position sensors, but they can stop working with even small amounts of environmental contamination including dust, and require careful mechanical alignment to perform well. CambridgeIC's miniature through hole rotary sensors offer a robust and precise alternative that is not affected by dirt and dust.
Linear actuators frequently employ a stepper motor to position the load, or perhaps a or servo motor with encoder. These require a ballscrew to convert a precise rotary position to a linear one. Ballscrews are expensive, heavy and will often require protection from a harsh environment. CambridgeIC's linear position transducers allow designers to measure position at the point of load, so the ballscrew may be replaced with a belt to deliver a lighter, more cost effective module.
Arc Position Sensors from CambridgeIC measure the angle of a rotating target relative to a fixed sensor. They are positioned off axis, so that the rotation axis is free from sensor parts and any couplings. Arc sensors only extend along the measurement range of interest, so a complete sensor ring around the axis is not needed.