Compare and contrast the use of an LVDT and a resistance-based potentiometer for position measurement.
1. cost:
Potentiometer--Low and LVDT ----Moderate to High
2. Function
Potentiometer--Can be trimmed to specific functions
LVDT ----Can be wound into unit, limited to variation in turns
3. Power Loss Recovery:
Potentiometer--Position recovery is simple; units power up at previous voltage
LVDT ----Position recovery is simple; units power up at previous voltage
4. Resolution:
Potentiometer--Infinite
LVDT ----Infinite
(limited by noise in the LVDT signal conditioner)
5. Life:
Potentiometer--> 5 million cycles
LVDT ---->10 million cycles
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