体位变换通气系统建模仿真与控制算法研究

Research on Modeling and Control Algorithm of the System of Position Transformation Mechanical Ventilation

在简单介绍体位变换机械通气原理的基础上,针对智能呼吸保健椅机械结构设计的复杂性。为保运动的稳定性,重点研究了临床试验设备的机械结构和智能控制算法,并进行了建模仿真研究。提出滑杆驱动式智能呼吸保健椅机械结构方案,利用ADAMS仿真软件建立方案的动力学仿真模型,并进行模型验证和仿真研究;设计了综合专家知识和PID控制理论的专家PID控制器,利用ADAMS和MATLAB的联合仿真能力对控制算法进行仿真研究。仿真结果表明,智能呼吸保健椅不仅具有一般摇椅的自然摇动功能,还能实现电机驱动控制下的目标动作,并且打滑幅度较小,说明机械方案的可行性,同时联合仿真结果表明了专家知识PID控制器的快速精确控制能力。

The principle of Position Transformation Mechanical Ventilation （PTMV） was introduced briefly, and the mechanical structure, the intelligent control algorithm and Modeling ＆ Simulation were studied aiming to the mechanical structure complexity of the Intelligent Respiration Hygienical Chair（IRHC）. According to the principle and function requirement of PTMV,the mechanical structure of Slip Pole Driven Intelligent Respiration Hygienical Chair （SPDIRHC） was proposed, the dynamics model of SPDIRHC was established, the integrated model of control system was structured by using ADAMS, and the model validation and simulation were implemented. The expert knowledge PID was designed by using the advantage of both, and the simulation about the control algorithm was investigated by using both ADAMS and MATLAB. The simulation results indicate that the IRHC has the natural rocking function of normal rocking chair, and can realize target action and has little skid. Above all shows that the mechanical structure is feasible, besides, the unite simulation results indicate that the expert knowledge PID controller has fast and precise control effect.