摘要
外科植入体须要具有良好的生物力学性能,要能够在人体内长期、稳定地工作,抵抗磨损和疲劳破坏。文中提出了一种用于生物材料低周疲劳实验的交流伺服电机控制系统,该系统主要包含了硬件电路板和上位机软件。该系统采用位置模式向伺服驱动器发送指令脉冲,在DSP控制程序中应用PID算法,通过载荷反馈和位置反馈实现系统的闭环控制。上位机软件通过RS-232串口和DSP控制器进行通信,可实现远程控制和在线修改试验参数。控制协议中采用了参数可变且带校验的指令帧格式,具有传输效率高和传输可靠的特点。
Surgical implants should have good biomechanical properties, the materials should be able to work in the human body persistently and stably, resist wear and fatigue damage. A servo motor control system for biological material low cycle fatigue test is described. It consists of a circuit board and the computer software. The system sends command pulse to the servo driver by using position mode and applies PID algorithm to the DSP program. It implements the closed-loop control through the load feedback and position feedback. PC software communicates with DSP controller via a RS-232 serial port. It can realize remote control and modify test parameters online. There are variable parameters and check data in the command frame format of the control protocol. It enables data transmission to be efficient and reliable.
出处
《自动化技术与应用》
2016年第7期14-18,共5页
Techniques of Automation and Applications
基金
国家自然科学基金(编号11302142)
