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US 12,372,381 B2Granted
Signal conditioning in a position sensing system
AssigneeHamilton Sundstrand Corporation
InventorsDhananjay Kumar, Swathika Sreedhar
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Abstract
A position sensing system includes a linear variable differential transformer (LVDT) to provide a first output voltage and a second output voltage. The position sensing system also includes two precision rectifiers. Each of the precision rectifiers comprises only operational amplifiers and resistors and obtains the first output voltage or the second output voltage as an input and to provide a full-wave rectified output.
Claims18
A position sensing system comprising:
- a linear variable differential transformer (LVDT) configured to provide a first output voltage and a second output voltage;
- and
- two precision rectifiers, each of the precision rectifiers comprising only operational amplifiers and resistors and being configured to obtain the first output voltage or the second output voltage as an input and to provide a full-wave rectified output;
- wherein each of the precision rectifiers includes a first operational amplifier, a second operational amplifier, and a third operational amplifier.
1 more element
A method of assembling a position sensing system, the method comprising:
- connecting a linear variable differential transformer (LVDT) to a moving part whose position is sensed by the position sensing system and arranging the LVDT to provide a first output voltage and a second output voltage;
- and
- arranging two precision rectifiers such that each of the two precision rectifiers obtains either the first output voltage or the second output voltage as an input and provides a full-wave rectified output, and each of the precision rectifiers comprises only operational amplifiers and resistors;
- wherein arranging each of the precision rectifiers includes arranging a first operational amplifier, a second operational amplifier, and a third operational amplifier.
1 more element
Dependencies are inferred from the claim text.