Research On The Active Suspension Energy-regenerative And Vibration Reduction Characteristics Based On The Electromagnetic Linear Actuator

Conventional passive suspension converts vibration energy into heat energy.With the development of electronic technology,actuators and microprocessors,it makes energy recovery become possibility,such as more mature braking energy recovery technology.Electromagnetic linear actuator provides the opportunity of vibration energy recovery for the regenerative suspension system.Firstly,based on the multi-body dynamics,this paper builds up vehicle dynamics model for racing car of Formula Student China with ADAMS/car to estimate the shock absorber’s energy consumption at different speeds and on different level random roads.The simulation results demonstrate that it has considerable recovery value on C-class roads.Then,according to the requirement of racing car damper’s force and speed,this paper designs an electromagnetic linear actuator,and establishes the system equations and models of active mode and energy-recovery mode.On the one hand,this paper establishes model for ADAMS-MATLAB combine simulation of energy-recovery mode,and analyzes the energy-recovery characteristics of the electromagnetic linear actuator.On the other hand,this paper establishes model for ADAMS-MATLAB combine simulation of active mode,and analyzes the vibration reduction characteristics of the active suspension,the results show that active suspension can improve vehicle ride comfort.Finally,this paper establishes the 1/4 viechle suspension model based on a racing car of Formula Student China,and the mechanical excitation platform is used to motivate the mechanical platform.The experiments show that the electromagnetic linear actuator can generate electricity and provide damping force to reduce vibration in the energy-recovery mode.