How to Enable Long High Precision Performance in EVs
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How to Enable Long High Precision Performance in EVs

Considering that resolvers have outstanding reliability and high precision performance in harsh and severe environments for a very long time, they are widely used in EV, HEV, EPS, inverter, servo, railway, high-speed train, aerospace, and other applications where position and velocity information is needed. Many resolver-to-digital converters (RDCs), such as Analog Devices’ AD2S1210 and AD2S1205, were used in previous systems to decode the resolver’s signal to get digital position and velocity data. Interferences and fault issues tend to happen in customers’ systems, and most of the time they want to evaluate the accuracy performance of angle and velocity under the interference conditions, find and validate the root cause, then fix and optimize the system. A high-accuracy resolver simulator (which simulates a resolver attached to the real motor at constant speed or position) with fault injection can solve the interference and fault pain points without setting up a complicated motor control system.
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