Active and passive combined self-adaptive vibration control suspension system and control method

Abstract

The invention belongs to the technical field of automobile suspensions, and particularly discloses an active and passive combined self-adaptive vibration control suspension system and a control method. The system comprises a suspension passive module, a suspension active module and a control module which are sequentially arranged from top to bottom, the suspension passive module inputs vibration needing to be attenuated, and the suspension active module comprises a first elastic element, an electromagnet module and a second elastic element. The control module is used for controlling the suspension active module to output corresponding exciting force by adopting a feedforward and feedback combined mode so as to further eliminate the vibration of the suspension passive end after primary passive vibration isolation. According to the method, a mode of combining feedforward and feedback is triggered through a reference signal with or without a vibration source, so that exciting force used for counteracting an actual vibration signal is obtained. An active and passive composite suspension structure is used for eliminating vibration of the active suspension end, and the system has the advantages of being simple in structure, good in robustness and high in adaptability.

Description

Technical field [0001] The invention belongs to the technical field of automobile suspension, and more specifically, relates to an active and passive combined adaptive vibration control suspension system and a control method. Background technique [0002] As a rotating reciprocating machine, the engine is one of the important sources of vibration and noise in automobiles and an important factor affecting driving comfort. The vibration magnitude of diesel engines is larger than that of gasoline engines, causing vibration and noise problems to become more prominent. Generally, passive technical measures such as vibration elimination, vibration isolation, vibration absorption, and damping of the engine mounting system are used to reduce engine vibration and prevent its propagation. One of the keys to the NVH performance design of the engine mounting system is that the current main forms of mounting systems are rubber mountings and hydraulic mountings. [0003] The existing te...

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Problems solved by technology

However, the stiffness of the elastic element of the suspension structure cannot be actively adjusted, and the vibration isolation rate will be limited. At the same time, it cannot achieve low-frequency and full-frequency vibration and noise reduction, and it cannot completely eliminate vibration transmission.

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