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中文摘要：
针对常规滑模控制方案应用于电流连续型（CCM）Buck变换器中，存在开关频率不固定及电感启动电流过大等问题，对电流连续型Buck变换器建立了仿射非线性模型，在∑-△（sigma—delta）调制器的基础上，选定反映控制目的的合适滑模面后，设计了指数趋近律的滑模控制器。仿真结果表明，采用该滑模控制的电流连续型变换器具有固定的开关频率，并且启动时间和电感启动电流可通过调节滑模控制器中的控制参数进行调整。
英文摘要：
Aiming at the unfixed switch frequency and the big startup current uf inductor in the general sliding mode control schemes fur current conduction mode （CCM） Buck converters, an affine nonlinear model was established for Buck converter working on CCM. Based on the ∑-△ modulator, the sliding mode controller of exponential approach law was designed, after the fit surface was chosen for the control movie. The simulation results indicate that CCM Buck converter which adopted the sliding mode controller has the fix switch frequency. Furthermore, the startup time and the startup current of inductor can be adjusted with changing the control parameters in the sliding mode controller.
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