Electromagnetic-rheological fluid hydro-pneumatic hanging system

Abstract

The invention relates to a hydro-pneumatic suspension system with electromagnetic rheological fluid. As the cubage compensation cavity formed by floating piston is connected with bypass oil channel of said dividing-combining valve in the hydro-pneumatic damper, said floating piston makes the electromagnetic rheological fluid in the hydro-pneumatic damping subsystem with electromagnetic rheological fluid and the fluid for conventional hydraulic transmission in assistant hydraulic synchronization subsystem block off and makes said hydro-pneumatic damping subsystem with electromagnetic rheological fluid and said assistant hydraulicsynchronization subsystem couple so that the hydro-pneumatic damper with electromagnetic rheological fluid and two totally different driving mediums of electromagnetic rhelogical fluid and the fluid for convention hydraulic transmission are made full use of, and active variable damper ratio control, active variable stiffness control and active adjusting high synchronization control for said controlled object are realized in the same time or respectively.

Description

Technical field [0001] The present invention relates to the oil-air suspension system of vehicles and equipment, especially the active oil-air suspension system of electromagnetic rheological fluid, especially the active damping ratio control, active variable stiffness control and active height adjustment of the electromagnetic rheological fluid active oil-air suspension system. Highly synchronized control. Background technique [0002] For traditional oil-air suspension systems, there are various forms of communication. At present, many functions of the oil and gas system, such as height adjustment function, active force control function, active vibration reduction and other functions, can be realized through hydraulic components such as hydraulic servo control valve, hydraulic proportional control valve and high-speed switching valve, sensors and controllers. However, due to the large number of connected pipelines, sensors and proportional control components in the system...

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Problems solved by technology

However, the application of electromagnetic rheological technology also makes the connection of traditional oil-pneumatic springs (such as US2004113377 Hydro-pneumatic Suspension System oil-air suspension system; US20050067239 Hydro-pneumatic Suspension System oil-air suspension system) relatively difficult, unless the entire system uses electromagnetic rheological fluid

[0004] Although the Chinese patent application (CN200510057020.3 Controllable Automotive Magnetorheological Shock Absorber with Vehicle Height Adjustment Function) is an example of the use of electromagnetic rheological fluid in the entire system, which adopts the known electromagnetic rheological bridge technology, which can realize the However, for four-wheeled vehicles, at least 16 electromagnetic rheological valves will undoubtedly increase the cost of the automobile suspension system and reduce the reliability of the entire system, making practical application difficult

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