面向超声刀能量发生器的嵌入式DSP控制系统设计  

Design of Embedded DSP Control System for Ultrasonic Scalpel Energy Generator

作　　者：赵浩男 陈小红[1] 孙福佳[2] 林晓佳 黄永国 ZHAO Haonan;CHEN Xiaohong;SUN Fujia;LIN Xiaojia;HUANG Yongguo(School of Materials and Chemistry,University of Shanghai for Science and Technology;School of Mechanical Engineering,University of Shanghai for Science and Technology;School of Health Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学材料与化学学院 [2]上海理工大学机械工程学院 [3]上海理工大学健康科学与工程学院,上海200093

出　　处：《软件导刊》2023年第11期148-154,共7页Software Guide

基　　金：上海市肿瘤能量治疗与器械协同创新中心项目(2021)。

摘　　要：超声手术刀在工作过程中,对能量发生器控制系统的实时性和稳定性有着较高要求。针对这些要求,设计一种基于DSP的超声刀能量发生器控制系统,该系统以主频达200 MHz的TMS320F28377D为主控芯片,通过芯片的ePWM模块、IIC模块、SPI模块和SCI模块完成对供电电路、驱动电路、反馈电路和人机交互系统的控制,产生驱动超声刀工作的正弦交流信号,调用CLA对采样信号进行运算并执行PID控制程序,完成对整个能量发生器系统的闭环控制。相比于数据运算和控制功能全部由CPU完成的MCU控制系统,协同使用CPU和CLA的控制系统运算速度更快、控制周期更短。采用恒定输出电流的功率控制策略,可最大限度地提高超声刀工作的稳定性,实现通过屏幕控制系统,并将系统的电压信号、电流信号等参数实时显示到屏幕上。In the working process of ultrasonic scalpel,there are high requirements for the real-time and stability of the energy generator control system.Aiming at these requirements,a control system of ultrasonic scalpel energy generator based on DSP is designed.The system takes TMS320F28377D with main frequency of 200 MHz as the main control chip,and controls the power supply circuit,drive circuit,feedback circuit and man-machine interaction system through ePWM module,IIC module,SPI module and SCI module of the chip,and generate sinusoidal AC signals that drive the ultrasonic scalpel to work.Then,the control law accelerator CLA is called to carry out non-periodic sampling algorithm and PID control algorithm to complete the closed-loop control of the whole energy generator system.Compared with the MCU control system whose data operation and control functions are all completed by CPU,the control system using CPU and CLA together has faster operation speed and shorter control cycle.The power control strategy of constant output current is adopted to maximize the stability of the ultrasonic scalpel,and the parameters such as current signal and voltage signal of the system are displayed on the screen in real time.

关 键 词：超声刀 能量发生器 DSP 嵌入式 控制系统 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]