| 摘要:采用NI PCI6221多功能数据采集卡建立了基于虚拟仪器的柴油机速度控制系统，设计了增量式模糊-PID控制器。针对模糊-PID切换控制中出现的系统响应动态特性和稳定性不佳的问题，对切换控制器进行了优化；采用偏差及偏差变化率作为切换依据及双阈值判断方法，有效改善了系统动态特性，提高了控制器切换稳定性。试验结果表明:优化后的柴油机模糊-PID调速控制系统在动态特性、稳定性上都取得了更好的控制效果。 |
| 关键词: 柴油机 调速特性 虚拟仪器 模糊-PID控制 |
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| Research on Diesel Engine Fuzzy-PID Speed Governing ControlBased on Virtual Instrument |
| Wang Dongjun,Yuan Zhiguo,Fei Hongzi,Li Wenhui |
| Naval Deputy Office of Datong District, Shanxi Datong 037036;College of Power and Energy Engineering, Harbin Engineering University, Heilongjiang Harbin 150001 |
| Abstract:Diesel engine speed governing control system based on virtual instrument was established with the use of NI PCI6221 multi function data acquisition card, and the incremental fuzzy-PID controller was designed. In view of the bad system response dynamic characteristics and stability during switching and controlling by fuzzy-PID, the switching controller was optimized. Deviation and deviation rate were taken as the switching reference and dual threshold determining rule, which effectively improved the dynamic performance of the system, as well as the switching stability of the controller. Test results show that the diesel engine fuzzy-PID speed governing system achieves better controlling effect both on dynamic performance and stability. |
| Key words: diesel engine speed governing characteristic virtual instrument fuzzy-PID control |
