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中文摘要：
提出并研究一种开关变换器非线性控制策略,双频率控制技术。研究电压型和电流型双频率控制开关变换器的实现方式及特点,对比分析电压型和电流型双频率控制开关变换器的工作特性和控制规律。理论分析、仿真及实验结果表明：电压型和电流型双频率控制具有相同的稳态工作特性;而在动态响应方面,电流型双频率控制具有比电压型双频率控制更为优越的性能。此外,与电压型双频率控制相比,电流型双频率控制具有自动限流功能和更为平稳的启动特性。
英文摘要：
A novel non-linear control technique,bi-frequency control technique,for switching converters was proposed and studied in this paper.Two different bi-frequency control techniques,voltage-mode bi-frequency（VM-BF） control and current-mode bi-frequency（CM-BF） control were investigated as well as their control laws and control characteristics.Theoretical analysis,computer simulation and experimental results indicate that VM-BF and CM-BF control have similar steady-state characteristics.However,the transient performance of CM-BF is better than that of VM-BF control.The inherent current-limit function of CM-BF control makes the start-up process of CM-BF control much smoother than that of VM-BF control.
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