基于DSP的超磁致伸缩致动器测控系统设计

Design of Testing and Controlling System for GMA Based on DSP

超磁致伸缩致动器(GMA)是一种具有广阔应用前景的新型智能驱动元件。为方便GMA特性研究和控制实验的开展,设计了以DSP为核心的GMA测控系统。硬件方面,将上位机和DSP集成配置,可实现GMA的开环测试和闭环控制;软件方面,采用C++和MATLAB混合编程编写上位机程序,实现上位机对测控过程的实时监控;控制策略方面,将GMA位移逆模型和单神经元PID算法写入DSP,提高GMA的控制精度。经实验表明,系统能够较好地完成GMA测控实验,有助于GMA的优化设计和控制策略的验证。

Giant magnetostrictive actuator（ GMA） is a kind of intelligent actuation component which has broad application foreground. A testing and controlling system is designed based on DSP for GMA,in order to make further research on properties of GMA and control experiments easier. On the hardware side,the upper computer and DSP are integrated together. Both open-loop testing and closed-loop controlling experiment for GMA can be conducted.On the software side,it is developed to monitor the process of experiments through a method based on the mixed programming of C ＋ ＋ and MATLAB,which is easy to maintain and expand. On the control strategy side,inverse model of GMA and single neuron PID algorithm are embedded into DSP,helping to improve precision of controlling.Indicated by the experimentation,the system could complete the testing and controlling experiments well,and it conduces to optimal design and verification of control strategy for GMA.