Objective To evaluate the clinical application of permanent vena cava filter in patients with deep venous thrombosis.
目的探讨下肢深静脉血栓形成患者植入永久性腔静脉滤器的临床应用。
Objective To evaluate the clinical application of permanent vena cava filter (P-VCF) in patients with deep venous thrombosis (DVT).
目的探讨下肢深静脉血栓形成患者植入永久性腔静脉滤器的临床应用。
A nonlinear speed controller for permanent magnet synchronous motor based on adaptive backstepping control was designed, which USES second-order filter to smooth the speed reference.
设计了一种基于自适应反步控制的永磁同步电动机非线性速度控制器,采用二阶滤波环节平滑速度指令。
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