I am wondering if it would be possible to use the AD2S1200 also with LVDT / RVDT type sensors..
Thanks and Best Regards
The AD2s1200 is an RDC.The theory of the RDC is it tracks the shaft angle. While it tracks it produces an angle which it compares with the input angle. This is measured by checking the inputs to the Sin and Sinlo(S3-S1 from resolver) and Cos and Coslo(S4-S2 from resolver). It uses these two signal to track. I haven't use the LVDT with the AD2S1200 but checking on it the LVDT has 1 signal that the AD2S1200 to check. If only one signal was detected by the AD2S1200, it will trigger faults,as part of its feature.
thank you for your reply :-)
My thoughts were to connect the S1 of the LVDT to Sin+ and the S2 of the LVDT to Cos+, while connecting the respective Cos- and Sin- to RefOut. Then the AD2S1200 would be able to measure the difference between those signals as usual, or am I completely wrong? (..of course I would have to make sure that the voltage between RefOut and Cos+ / Sin + is in the allowed range..).
The reason for my question is that there are parts on the (aerospace) market claiming to be able to measure anything like RVDT, LVDT, Resolver, Inductosyn, etc.. and I was wondering if this is just a matter of different connection / amplification, or if there would be more adaption and logic inside the chip itself needed..
Thanks again, and Best Regards,
As have read through some of the documents and I think the AD2S1200 or RDC can possibly use for LVDT to detect the difference of the Sin and Cos signal that is dependent on the position of the rod. But the data output form the RDC are basically design for motor application thus its output relates to it which are position and velocity. Although the RDC can detect Sin and Cos signal difference output of the LVDT but the conversion output are angular information. But if this angular information can be relate to the position of the LVDT then it should be fine.
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