PCB平面绕组力矩电机闭环反馈式驱动系统设计

针对PCB平面绕组力矩电机运转时平稳性的问题，采用能实现极低导通电阻的IRF2807PBF MOS管作为驱动电路的主要芯片，结合IR2010s驱动芯片以及STM32F103ZET6主控芯片搭建整体的驱动电路，提升了在慢速情况下电路的驱动能力。利用SS361RT霍尔磁性位置传感器，形成速度闭环反馈，并运用自抗扰控制算法对速度增量进行控制，使用PI电流环对电流增量进行控制，最后通过SVPWM模块输出六路PWM脉冲序列控制三相全桥电路中的各相MOS管导通，从而实现了一种针对PCB平面绕组力矩电机的PWM闭环反馈式平稳调速驱动系统。通过仿真和实验表明，相比于使用传统的PI速度环设计的电机驱动系统，该驱动系统在相同转速下能大大提升电机运行时的平稳性。将驱动系统用于光学生物测量仪PCB平面电机控制的延迟线部分，能使延迟线平稳低速运行，保证了测量精度。

Design of closed-loop feedback drive system ofpcb plane winding torque motor

Aiming at the problem of stability when the PCB plane winding torque motor is running. The driving ability of the circuit at slow speed was improved by the integrated driving circuit. The core chip of the driving circuit was IRF2807PBF MOS tube which can have very low on-resistance. It was also combined with IR2010s driving chip and STM32F103ZET6 master control chip. First, SS361RT Hall magnetic position sensor was used to establish closed loop feedback of the speed. At the same time, The algorithm of auto disturbance rejection control was used to control the speed increment, and the PI current loop was used to control the current increment. Finally, the conduction control of each phase of MOS tube in the three-phase full bridge circuit was realized by outputting six PWM pulse sequences from the SVPWM module. Thus, a drive system with a PWM closed-loop feedback which can regulate speed stably for PCB plane winding torque motor was realized.Simulation and experiments indicated that, compared with the motor drive system designed with traditional PI speed loop, the new drive system can greatly improve the stability of the motor at the same speed. When this new driving system was applied to the part of delay line controlled by PCB plane motor of optical biometric measuring instrument, the smooth and low running speed of the delay line was realized, and the measurement accuracy was ensured.