Self-adaptive control method for active suppression of carrier rocket Pogo

• Main Authors: MAO CHENGYUAN, LIU JINFAN, TAN SHUJUN, MAO YUMING, ZHAO WANG, SHENG YINGHUA
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2021
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention discloses a self-adaptive control method for active inhibition of liquid carrying Pogo, and the method comprises the following steps: based on an established Pogo system state space model, adopting a method for solving the singularity problem of the Pogo model, and acquiring a non-singular reduced-order model in a new state space through eigenvalue analysis; deriving an adaptive control law in a new state space by adopting a model reference adaptive control theory; and obtaining an adaptive control law of an original state space through feature transformation. The invention provides the self-adaptive control design method for Pogo active suppression by adopting a self-adaptive control theory, and the method can better adapt to the requirements of a large liquid rocket space distribution mode and a wide effective frequency range, has better adaptability and robustness for model parameter changes, and enhances the Pogo active suppression performance; therefore, a new methodis provided for Pogo inh