《STM32F10xxx_正交编码器接口应用笔记》.pdf

STM32F 10xxx STM32F10xxx Abstract The quadrature encoder which is very popular in the motor servo control application, known as a 2-channel incremental encoder, converts linear displacement into a pulse signal. By monitoring the number of pulses and the relative phase of the two signals you can track the position, the direction of rotation and speed. In ddition, a third channel, or index signal, can be used to reset the position counter. STM3210x which is the MCU based on ARM latest core - Cortex-M3, integrates the quadrature encoder interface. Accordingly STM3210x can handles the encoder signal without any CPU overhead which it is possible for CPU to focus on the vector control. , TM32F10x MCU MCU STM32F10x 1 A B Z A B +/- 90° 1 1/7 STM32F 10xxx 2 STM32F10x STM32F10x TI1 TI2 2.1 2 2.2 TI2 TIM1_SMCR SMS=001TI1 SMS=010 TI1 TI2 SMS=011 TIM1_CCER CC1P CC2P TI1 TI2 TI1 TI2 1 (TIM1_CR1 CEN=1)TI1FP1 TI2FP2 TI1FP1 TI2FP2 TI1 TI2 TI1FP1=TI1TI2FP2=TI2 TIM1_CR1 DIR TI1 TI2 TI1 TI2 (TI1 TI2)DIR 2/7 STM32F 10xxx 0 TIM1_ARR (0 ARR ARR 0 )TIM1_ARR