Rotation based on DSADC becomes software decoding system and method

Become software decoding system and method the present invention relates to a kind of rotation based on DSADC, software decoding is carried out using the DSADC modules carried in main MCU, extra chip or MCU is not needed, DSADC modular units based on over-sampling principle realize the delayed phase for meeting generation system of accurately being sampled to the high frequency of analog signal, delay correction can be added in systems to compensate, rectification building-out can be automatically adjusted during loop parameter condition varying time delay.The demodulation of carrier signal for being included in data signal realizes that the information after demodulation has carried out the real-time resolving of rotor angle signal by last observer algorithm again by reverse shaping and integral operation.The coding/decoding method has pinpoint accuracy and high dynamic and static state performance, can save hardware development cost, it is to avoid the waste of resource, so that more preferable economic benefit is createed, it is achieved thereby that the angular transformation of the low cost of rotary transformer, high-performance, high integration.