Design of wireless DC servo controllers based on DSP and nRF24L01

HUANG Qi-min，ZHAO Zhuan-ping，GONG Xing

（College of Mechanical and Electrical Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China）

Abstract：Aiming at the problems of the large number of cores，thick and hard cable about the three-jaw self-centering probe，the technology of controlling DC servo motor through wireless was investigated. A method was presented to control DC servo motor through wireless based on DSP（Digital Signal Processor）and nRF24L01. The TMS320F2808 was selected as the main control chip. The nRF24L01 was selected as the module of wireless communication. The form of driver chips+MOS tube was used as motor driver's part，the driver chips IR2130 was selected，the MOS tube IRFU3806 was selected. The options about how to design the hardware circult was

discussed，and some software designs were given，the flow chart about transmission and reception and the initialization procedure about PWM，QEP and ADC were given. A long trip of wireless DC servo motor driver inside the probe was designed，thus the number of cores about the probe was decreased，the accuracy and operation about the measurement were improved. The results indicate that the DC servo motor uses the current control mode，the three-jaw can extend and retake smoothly，the motor of the probe runs smoothly and reliably.