Magnetic suspension spring and eddy current damper coupled vehicle semi-active suspension for new energy vehicle

Abstract

The invention discloses a magnetic suspension spring and eddy current damper coupled vehicle semi-active suspension for a new energy vehicle. The magnetic suspension spring and eddy current damper coupled vehicle semi-active suspension comprises an eddy current damping generation structure, a magnetic suspension spring structure and magnetorheological fluid. And the weight of the vehicle body is supported by attraction force between the movable permanent magnet and the coil permanent magnet fixed on the lower working cylinder. The suspension can control currents in the coil permanent magnet and the magnet exciting coil according to real-time feedback of the acceleration sensor installed in the piston, the magnitude of acting force between the coil permanent magnet and the movable permanentmagnet and the viscosity characteristic of magnetorheological fluid are changed, and therefore the rigidity and damping of the suspension can be adjusted. When an automobile runs on a road surface with a severe road environment, induced current generated in the coil permanent magnet can be recycled through an outer-end circuit. The problem that the rigidity and damping of the suspension are difficult to control is solved, meanwhile, graded adjustment of damping is achieved through the one-way valves, the running smoothness of a vehicle is improved, part of vibration energy can be recycled, and good practical value is achieved.

Description

technical field [0001] The invention relates to a vehicle semi-active suspension coupled with a magnetic levitation spring and an eddy current damper for a new energy vehicle, and belongs to the technical field of vehicle suspension vibration reduction. Background technique [0002] The basic principle of eddy current damping is: when the conductor plate in the local magnetic field cuts the magnetic induction line, an eddy current will be generated in the conductor plate, and the eddy current will generate a new magnetic field opposite to the direction of the original magnetic field, so that the original magnetic field and the conductor A damping force that hinders the relative movement of the two is formed between them. At the same time, the resistance effect of the conductor plate converts the kinetic energy obtained by the conductor plate into heat energy through eddy currents and dissipates it. If the conductor plate is connected to the vibrating structure, structural vib...

AI Technical Summary

Problems solved by technology

However, the invention has a large volume, the overall structure is not compact, and its main application is to control the vibration response of high-rise buildings and towering structures, so it is difficult to apply it to automobiles.

However, the vibration isolation performance of most of the current passive suspensions and semi-active suspensions fails to meet people's expectations; active suspensions consume too much energy, and even in a static state, the force generator device still needs to consume energy to support body load

In the face of the shortcomings of the existing vehicle suspension structure, such as high energy consumption and poor vibration resistance, and the good vibration resistance of the eddy current damper structure, there is an urgent need for engineering to achieve continuous adjustment of damping and stiffness at the same time, and good vibration isolation performance. Semi-active suspension that reduces energy consumption to a certain extent

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