摘要
提出一种混合控制方法,把PI控制与滑模变结构控制(SMVSC)相结合用于Boost变换器,当输出偏差较大时(大于阈值)采用SMVSC,而在输出偏差较小时(小于阈值)采用PI控制。这种方法可使系统在偏差较大时具有SMVSC的快速性和鲁棒性,在偏差较小时由于不会出现积分饱和使PI控制器发挥作用而消除了滑模面附近的高频抖动及滑动模态误差。
Presents a hybrid control which consists of PI control and SMVSC used for Boost converter. When output error is bigger than threshold value, SMVSC will be selected, otherwise PI control will be selected. This control strategy has advantages of both controllers, which can obtain more feedback information and better dynamic response, and can be maintained in spite of large input voltage, output current, and even parameter variations（robustness）. And it can effectively eliminate chattering and reduce steadystate errors.
出处
《福建工程学院学报》
CAS
2005年第6期612-615,共4页
Journal of Fujian University of Technology
基金
国务院侨办科研基金资助项目(05QZR09)
福建工程学院科研发展基金资助项目(GY-Z0327)
