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本文对采用等离子体激励控制滤清器惯性级中的气流分离进行了试验研究.采用粒子成像测速技术(PIV)测量3种不同位置处等离子体激励下的惯性级大分离位置处的速度流场.试验结果表明:等离子体激励产生的诱导气流对流场注入能量,能够增大出口气流的纵向分速.激励的效果与激励位置有关,激励位置越靠近气流分离点,激励效果越明显,出口气流纵向分速越大.因此,选取合适的等离子体激励器贴附位置,可以提高等离子体激励对惯性级中总压损失的控制效果.“,”This paper presents the experiment which is about controlling the air separation in the filter inertia stage through adding the plasma excitation.Velocity flow field of inertial stage with 3 different the plasma excitation positions is measured by the particle imaging velocimetry technique(PIV).Test results indicate that the induced airflow generated by plasma excitation can be injected into the flow field,which can increase the axial velocity of the outlet gas flow.The effect of the excitation is related to its position,the closer to the separation point of the flow,the more obvious excitation effect,the greater the axial velocity of the outlet air flow.Therefore,it can be obtained better results to control the total pressure loss in inertial stage through selecting the appropriate plasma actuator attachment position.