基于级联集成滑动模式控制器的医疗循环仪脱离离子水冷却系统的恒温控制策略
Binzhe Sun1, Zhenheng Yuan2, Junyu Zhang3
1School of nuclear science, energy and power engineering, Shandong University, Jinan, 250061, China.
概括
一个新的级联集成滑动模式控制器 (CISMC) 提高了医疗周期器冷却系统的热稳定性. 这种先进的控制通过减轻复杂的动态和外部干扰来提高操作可靠性和光束质量.
科学领域:
- 核技术与医学 核技术与医学
- 放射治疗疗法 放射治疗疗法
- 热管理系统的热管理系统.
背景情况:
- 医疗循环电子需要精确的热控制,以获得最佳的性能和安全.
- 脱离离子水冷却系统 (WCS) 对于保持组件稳定性至关重要,但表现出复杂的合动态.
- 传统的PID控制器缺乏对WCS中的干扰和不确定性的稳定性.
研究的目的:
- 开发一种先进的控制策略,以提高医疗循环仪WCS的热稳定性.
- 为了提高响应速度,控制精度和对干扰的稳定性.
- 为了减轻滑动模式控制中固有的喋喋不休的现象.
主要方法:
- 基于机制的建模,以准确地表示WCS动态.
- 一个带有自适应规则的级联集成滑动模式控制器 (CISMC) 的设计.
- 用和功能取代标志功能,以减少喋喋不休.
主要成果:
- 与PID相比,CISMC显著降低了温度控制的综合绝对误差 (IAE) 从19.27降至5.88和综合时间绝对误差 (ITAE) 从191.90降至47.79.
- 对于流量控制,与传统的SMC相比,CISMC将IAE从0.95降低到0.34,ITAE从3.00降低到1.21.
- 实现了有效的系统聊天和波动的缓解.
结论:
- 拟议的CISMC在准确性,速度和强度方面提供了卓越的性能,用于医疗循环仪WCS.
- 适应性定律和和函数成功地解决了控制挑战和聊天.
- 这种先进的控制策略提高了放射治疗设备的可靠性和安全性.
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