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Improved Temperature Measurement and Temperature Difference Control of the Displacement Digester
  
DOI：10.11980/j.issn.0254-508X.2016.07.010
Key Words:displacement digester system  temperature difference control  digester  neural network PID  cascade decoupling
Fund Project:本课题得到国家国际科技合作项目(2010DFB43660) 及陕西省重点科技创新团队计划项目(2014KCT-15)的资助。
Author NameAffiliation
汤　伟1 1.陕西科技大学电气与信息工程学院，陕西西安,710021 
杨鹏飞2，* 2.陕西科技大学轻工与能源学院，陕西西安,710021 
党世红2 2.陕西科技大学轻工与能源学院，陕西西安,710021 
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Abstract:Aiming at the difficulties of eliminating temperature difference in the displacement digester, this paper proposed a new method for measuring temperature based on the traditional digester temperature measurements. With combining neural network control, PID cascade control and decoupling control, a neural network PID cascade decoupling control system was proposed. The problems of time delay, time-varying and nonlinear in digester temperature control were solved, Matlab simulation comparison showed that the neural network PID cascade control system had better dynamic performance and robustness, its control performance was superior to the normal PID control system.
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