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| Fuzzy-PI Dual-mode Control of Alkali Recovery Boiler Negative Pressure Based on Genetic Algorithm |
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| DOI：10.11981/j.issn.1000-6842.2016.03.36 |
| Key Words:alkali recovery boiler; boiler negative pressure； feedforward-feedback control； dual-mode control; genetic algorithm |
| Fund Project:陕西省教育厅专项科研计划项目(14JK1094);陕西省科学技术研究发展计划项目(2013K07-28)。 |
| Author Name | Affiliation | | 李 艳1 | 1.陕西科技大学电气与信息工程学院,陕西西安,710021 | | 王素方1 | 1.陕西科技大学电气与信息工程学院,陕西西安,710021 | | 万芙蓉2 | 2.陕西未来能源化工有限公司,陕西榆林,719000 |
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| Abstract: |
| The recovery boiler has a complex operation mechanism and with the characteristics of time-varying, time-laying, nonlinear etc. It is difficult to establish an accurate mathematical model. Fuzzy-PI dual-mode controller was applied to its negative pressure control. At the same time, the fuzzy rules and PI parameters were optimized by using genetic algorithm. The main interference factors of the negative pressure were analyzed and the feedforward-feedback control system was designed for it. MATLAB simulation showed that the control system could well overcome the impacts of interference, target parameter change, and object structural change on the negative pressure, it therefore could stabilize the negative pressure and increase the control speed, control accuracy and the adaptive ability. |
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