Research on Synchronous Acquisition Circuit of Angle Dynamic Calibration Signal Based on FPGA
The problem of signal synchronization delay between multiple angle measuring systems under dynamic angle cali-bration was studied.The mechanism of angle synchronization error caused by signal delay difference was expounded,the angle synchronization error model was established,and the relationship between the angle synchronization error and the delay difference between the system was clarified.Synchronization trigger and acquisition circuit based on field programmable gate array(FPGA)was designed and developed,and the application of fixed angle trigger in signal synchronization was emphasized.The turntable ex-perimental platform was built and verification experiments were carried out.The experimental results show that there is a linear re-lationship between the angle synchronization error and the speed,and the delay difference is basically unchanged in the range of 45.369～46.641 µs.
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