中文说明：提出了一种基于线性二次型调节器的单相连续不间断电源最优控制策略。该控制器的目标是在线性和非线性负载下实现快速的瞬态响应、良好的电压调节和较低的输出电压总谐波失真。结果表明，只要在闭环系统中利用最小成本泛函的最优反馈增益，就可以满足这些目标。这些增益的选择考虑了系统的极点和输入限制。仿真和实验结果验证了该控制方法在线性和非线性负载下的性能。
English Description：
An optimal control strategy based on the linearquadratic regulator approach is proposed for single-phaseuninterruptible power supplies in continuous time. Theobjective of the controller is to achieve a fast transientresponse, good voltage regulation, and low total harmonicdistortion of the output voltage under linear and nonlinearloads. It is shown that these objectives can be met providedthat the optimal feedback gains minimizing a cost functionare utilized in the closed-loop system. These gains arechosen taking into consideration the poles of the system andinput limitation. Simulation and experimental results arepresented to verify the performance of the proposed controlmethod under linear and nonlinear loads.