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中文摘要：
针对有约束模型预测控制在线计算量大的应用局限性,特别是在一些快速机电系统中应用的困难,利用显式预测控制“离线设计”和“在线综合”的特性,结合可达有效分区搜索算法,实现计算效率的进一步提升,同时保证系统实际运行的可靠性.针对强非线性、强耦合的欠驱动不稳定倒立摆系统,采用可达分区搜索与顺序搜索相结合的策略,建立了快速搜索显式预测控制律的综合实施方案.数值仿真和实时控制实验研究结果证实了该方法可在30 ms的采样周期内得到满足多种约束的计算结果,响应调节时间不超过2s,并且适用范围提高25％.所得结果说明,基于可达分区与直接搜索的显式预测控制策略具有在快速机电系统上实施的可行性.
英文摘要：
Extensive online computational complexity of constrained model predictive control （MPC） limits its practical application fields,especially in some fast electromechanical systems.Based upon the offline calculation and online synthesis characteristics of explicit MPC （EMPC）,the achievable region searching approach is employed to further speedup the online searching efficiency and raise the reliability.The achievable region searching and sequential searching methods are combined together to establish a comprehensive EMPC scheme to deal with a fast underactuated unstable inverted pendulum system with strong nonlinearity and coupling dynamics.Both mathematical simulations and real-time control experiments were performed to verify the effectiveness of the proposed scheme.The solu tion satisfying several constraints can be obtained within the sampling interval of 30 ms and the settling time is less than 2 s.Moreover,the applicable range is increased by 25%.These results suggest that the comprehensive EMPC scheme has application feasibility in fast electromechanical systems.
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