为了克服传统声衬在实际应用中的限制，介绍了一种可控声抗的声衬，并设计了一套控制系统实现了这种声衬声阻抗的有源控制，使这种声衬的吸声系数在任意声源频率范围内始终保持最优值或定值，从而满足一定的阻抗条件。这个工作对发动机吸声降噪有源控制及通过压气机机匣处理抑制颤振具有重要实际意义。 In order to overcome the limitation of the traditional acoustic lining in practical application, a sound-controllable acoustic lining is introduced and a set of control system is designed to realize the active control of acoustic impedance of the acoustic lining. Sound absorption coefficient in any sound source frequency range always maintain the optimal value or set value, so as to meet certain impedance conditions. This work has important practical significance for active control of engine sound absorption and noise reduction and suppression of chattering by compressor casing.