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Author Archives: Scott Rosenberger
Linear encoders – absolute or incremental? Incremental encoders are simple, inexpensive, and easy to implement, but they require that the machine be homed or moved to a reference position. Absolute encoders don’t require homing, but they’re usually more expensive, and … Continue reading
External Linear Position Sensors: Floating or Captive Magnet? Linear position sensors that are designed to be mounted externally on a machine (as opposed to those designed to be installed into a hydraulic or pneumatic cylinder) are available in a variety … Continue reading
Linear position sensors that provide continuous, typically analog, feedback are used extensively in a variety of applications in many different industries and markets. Linear position sensors employ various technologies, but at the most basic level the technologies can be classified … Continue reading
In a previous Sensortech post entitled “Hydraulic Cylinder Position Feedback“, we discussed the basic concept of hydraulic cylinder position feedback. In case you might have missed that post, here it is for an encore appearance. Magnetostrictive linear position transducers are commonly … Continue reading
In a previous entry here on the SensorTech blog, we discussed the concept of liquid level sensing, and the difference between discrete liquid level detection and continuous liquid level monitoring. In this entry, we are going to talk about the … Continue reading
Pages upon pages of information could be devoted to exploring the various products and technologies used for liquid level sensing and monitoring. But we’re not going to do that in this article. Instead, as a starting point, we’re going to … Continue reading
Several previous articles here on SENSORTECH have mentioned closed-loop control (Servo-Hydraulic Showcase, Linear Feedback Sensor Applications: The Three M’s). But exactly what does “closed-loop control” mean? How does it compare to open-loop control? I recently ran across an article in … Continue reading