干燥温度精确控制系统 基于改进的神经网络 PID 控制器和可变温度干燥实验的西瓜切片
Taoqing Yang1,2,3, Xia Zheng1,2,3, Hongwei Xiao4
1College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China.
Plants (Basel, Switzerland)
|June 28, 2023
概括
一个改进的神经网络 (INN) 的比例积分导数 (PID) 控制器提高了干燥温度的精度. 该系统支持可变温度干燥,证明了它对瓜片的恒温方法的优越性.
科学领域:
- 食品工程 食品工程
- 控制系统工程 控制系统工程
- 材料科学 材料科学 材料科学
背景情况:
- 精确的温度控制对于优化干燥过程至关重要.
- 可变温度干燥对传统的恒温干燥方法具有潜在的优势.
- 现有的控制系统可能缺乏先进干燥技术所需的准确性.
研究的目的:
- 开发和验证一个改进的神经网络 (INN) 的比例积分导数 (PID) 控制器,用于精确的干燥温度控制.
- 评估INN-PID控制器与传统PID和神经网络PID (NN-PID) 控制器的性能.
- 为了比较线性可变温度 (LVT) 干燥与常温干燥对瓜片的有效性.
主要方法:
- 使用MATLAB与单位步骤信号模拟PID,NN-PID和INN-PID控制器.
- 在空气冲击干燥机中对控制器进行实验验证.
- 干燥实验使用LVT和恒温方法对西瓜片进行干燥实验.
- 使用亮度,颜色差异,维生素C,性,干燥时间和能源消耗来全面评估干燥质量.
主要成果:
- 与PID和NN-PID控制器相比,INN-PID控制器显示出更高的控制精度和更快的调节时间.
- 实验结果显示,INN-PID控制器有效调节了干燥温度,并且超出了最小的超值 (4.74%).
- 与恒温干燥相比,LVT干燥显著减少了干燥时间和能源消耗,同时保持了西瓜的质量.
结论:
- 开发的使用INN-PID控制器的干燥温度精度控制系统满足了可变温度干燥的严格要求.
- 可变温度干燥,特别是LVT,是一种比常温干燥更有效和高效的干燥模式.
- 该研究为进一步研究和应用可变温度干燥工艺提供了坚实的技术基础.
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