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针对压气机主动稳定控制方法中模态控制需要大量传感器及高频执行装置的不足,以喷气装置作为失速控制的执行机构,基于李亚普诺夫稳定性理论,利用回溯法设计了采用周向同步喷气的压气机预失速和过失速阶段的失速控制算法。理论分析和仿真结果表明,采用该方法,在预失速阶段,经过约1.1s持续喷气后,扰动的各阶模态的幅值均趋于0,各阶模态的相位均趋于恒定;在过失速阶段,持续约0.1s的喷气控制后,扰动的各阶模态被完全抑制,其各阶幅值趋于0,各阶模态相位趋于恒定;实现了对预失速和过失速的有效控制。由于以平均流量作为反馈输入,该方法只需安装少量传感器,且喷气装置的作动频率不高于50Hz,远低于模态控制方法。此外,采用同步喷气,也降低了执行机构的复杂性。
Aiming at the insufficiency of the modal control in the active stabilization control of the compressor which requires a large number of sensors and high-frequency actuators, the jet device is used as the actuator of the stall control. Based on the Lyapunov stability theory, the back- Compressor Stall Prevention and Stall Control Stochastic Stages. Theoretical analysis and simulation results show that with this method, after the continuous jet of about 1.1s in the pre-stall phase, the amplitude of each mode tends to be zero and the phase of each mode tends to be constant. During the stalling phase, after about 0.1s jet control, the modes of the disturbances are completely suppressed, and the magnitude of each step tends to be zero, and the phase of each mode tends to be constant. For the pre-stall and stalling Effective control. Since the average flow rate is used as the feedback input, the method only needs to install a few sensors, and the operating frequency of the jet device is not higher than 50Hz, much lower than that of the modal control method. In addition, the use of synchronized air jets also reduces the complexity of the actuator.