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 present invention belongs to the technical field of automobile suspension, and more particularly, to a combination of active and passive suspension system and adaptive vibration control method. Background technique [0002] Reciprocating engine as the rotating machinery is an important source of automobile vibration and noise, it is an important factor driving comfort. Diesel gasoline more than the magnitude of vibration, causing noise and vibration problems become more prominent. Engine technical measures typically by passive damper, vibration isolation, vibration absorber, the suspension system damping to reduce vibration of the engine and prevent its spread. One design of engine mounting system key NVH performance, the main current in the form of a suspension and the suspension system hydromount rubber. [0003] In the prior art transmitted to the engine body vibration isolation is to increase the rubber mount or passive hydraulic mount, or to increa...

AI Technical Summary

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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