Engineering Research Center of Automotive Electronics Drive Control and System Integration, Ministry of Education, Harbin University of Science and Technology, Harbin, Heilongjiang, China.
PLoS One. 2021 Feb 25;16(2):e0247228. doi: 10.1371/journal.pone.0247228. eCollection 2021.
The poor dynamic performance problem of a Full-Bridge converter under a traditional control strategy is investigated in this study. A new parameter adaptive terminal sliding mode control policy is developed for a Full-Bridge DC-DC converter, by combining the integral part with the power function and differential function in the design of the sliding surface. In theory, the steady-state error of the system can approach zero within a short time. To manage the un-ideal situation after using a fixed value of power γ, an improved γ adaptive algorithm is proposed. The system output is tracked and γ is adjusted in real time. The effect of the system can be guaranteed always in an optimal state. Finally, simulation results are provided to verify the performance of the proposed design method under different conditions.
本研究探讨了传统控制策略下全桥转换器的动态性能差问题。通过在滑模面设计中结合积分部分与幂函数和微分函数，为全桥 DC-DC 转换器开发了一种新的参数自适应终端滑模控制策略。从理论上讲，系统的稳态误差可以在短时间内接近零。为了处理使用固定功率γ值后的不理想情况，提出了一种改进的γ自适应算法。实时跟踪系统输出并调整γ。可以保证系统始终处于最佳状态。最后，提供了仿真结果以验证在不同条件下提出的设计方法的性能。
