The ring-space arry torque sensor

which is based on altemating curremt magnetic induction technology

is a non-contract sensor used in the extreme environments.According to the feature of the ring-space arry torque sensor

the control and signal processing system are designed and implemented.Signal prosessing part of the sensor are analyzed and studied

and the signal processing circuit are designed.Digital phase shift technology is used to improve measurement result’s precision of signal phase-different.It also adopts NiosII soft core CPU in the FPGA chip as control and data processing unit.The measuremental result indicates that the system has simple structure

high-precision measurement

good ability to suppress niose

and high reliability.