| Citation: | ZHAO Wenshuai, WANG Xi, ZHOU Long, et al. Forward frequency domain design method for integrating constant pressure drop control valve of fuel servo system[J]. Journal of Aerospace Power, 2025, 40（5）：20230561 doi: 10.13224/j.cnki.jasp.20230561
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A forward frequency domain design method for integrating constant pressure drop control valve was proposed, and the contents of the presented study were given: the state space model of the constant pressure drop control valve was derived based on the linear system theory; the explicit relationships between the structural parameters and system performance were established based on the frequency domain analysis method, providing a design guidance of the structural parameters; a dynamic design method was proposed based on the frequency domain design theory, which realized the design of the stabilization control gain; for convenient engineering applications, the concept of design graph for regular orifices was proposed, and the design method of structural parameters for regular orifices was provided. The simulation results showed that, under bad conditions, including the 1 MPa strong step disturbance of the inlet pressure and the significant step disturbance of the metering area, the steady-state working range of the controlled pressure drop was （0.81±0.01） MPa, the static error was less than 1.2%, the settling time was less than 0.002 s, and the phase margin was almost more than 70°. The system had servo tracking and robust disturbance rejection performance.
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