悬架是现代汽车中的重要组成部分，传统被动悬架的性能参数不能够根据车辆运行工况自动调节，从而在车辆行驶过程中不能够兼顾车辆的平顺性和操稳性；而且传统被动悬架通过阻尼器将悬架振动能量转化为热能来衰减振动，这个衰减过程将很大一部分能量白白浪费掉，这与提高能源利用率、节能减排这一时代主题相违背。因而如何将车辆行驶过程中悬架振动能量有效的转换为汽车可利用的能量，成为了当前研究热点。为解决传统被动悬架参数不可调与无法实现振动能量回收这两方面不足，本论文提出并设计了一种车辆直线电机式馈能悬架，并对该悬架动态减振性能与能量回收性能展开研究。 在分析馈能悬架工作机理与结构组成基础上，建立直线电机作动器数学模型、汽车馈能悬架模型，以及路面不平度模型。利用Matlab/Simulink对直线电机式馈能悬架进行主动控制仿真，根据馈能悬架评价指标对馈能悬架不同控制策略、不同路面等级、不同行驶工况下的悬架动态响应以及能耗进行综合分析。对悬架参数与馈能效率的关系进行理论分析，发现馈能悬架馈能效率与悬架阻尼系数、电机线圈绕组阻值和馈能回路阻值有关；以及悬架阻尼系数对车辆动态性能和能量回收的影响。建立包含馈能悬架、馈能电路和超级电容等模块的仿真模型进行馈能仿真。试制馈能悬架物理样机并对试验台进行改造，设计馈能电路，最后对直线电机式馈能悬架开展台架试验研究。 仿真结果表明，匀速行驶在不同等级路面上时，悬架主动控制策略对汽车动态性能都有较好的提升，且LQG控制性能最好。但是在起步加速、超车加速和减速停车等工况下，常用的控制策略对悬架俯仰角加速度控制效果较差，汽车容易产生“点头”现象。台架试验结果表明，馈能悬架在正弦激励输入下，簧载质量加速度均方根值相比传统被动悬架降低25%左右，能量回收效率能够达到20%左右，所设计的馈能悬架减振效果好且能够实现振动能量回收。

Suspension is an important part in modern cars, the performance parameters of traditional passive suspension can not be adjusted according to the vehicle running conditions, so at the beginning of the design is not able to take into account the vehicle ride comfort and operation stability, the traditional passive suspension damper suspension vibration energy to energy consumption, so as to decay from the ground caused by shock and vibration. But the decay process will be a big part of the energy wasted, and improve energy efficiency, energy saving and emission reduction is contrary to the theme of the times, so how will the vehicle suspension vibration in the process of converting energy efficient car can use energy, has become the current research hotspot. In order to solve the problem that the traditional passive suspension can not be adjusted and the vibration energy can not be recovered in two aspects, this paper presents and designs a kind of linear motor fed energy suspension, the dynamic damping performance and energy recovery performance of the suspension are studied. Based on the analysis of energy regenerative suspension working mechanism and structure on the basis of a linear motor actuator, The mathematical model of the linear motor actuator, the model of the automobile energy suspension, and the model of the road surface roughness are established. Simulation of active control of linear motor fed suspension using Matlab/Simulink , According to the evaluation indexes of the feed energy suspension, the dynamic response and energy consumption of the suspension with different control strategies, different road grades and different driving conditions are analyzed.Based on the theoretical analysis, the relationship between the suspension parameters and the energy efficiency is obtained. It is found that the energy efficiency of the feed suspension can be related to the damping coefficient of the suspension, the winding resistance of the motor and the resistance of the feed circuit, and the influence of suspension damping coefficient on vehicle dynamic performance and energy recovery. Build the simulation model including the feed energy suspension, the feed energy circuit and the super capacitor and so on. The prototype of theexperimental feed energy suspension is designed, and the test bench is reconstructed. The feed circuit is designed. Finally, the experimental research on the linear motor fed suspension is carried out. Through simulation and experiment: uniform driving on different road surfaces, suspension of active control strategy has a good promotion on the dynamic performance of the car, the best LQG performance. But in the initial acceleration, overtaking acceleration and deceleration and parking conditions, the control strategy of suspension pitching acceleration control effect is poor, prone to car "nod" phenomenon; Based on the simulation and bench test, the output energy suspension is obtained under sinusoidal excitation input, Compared with the traditional passive suspension, the root mean square value of sprung mass acceleration is reduced by about 25%, Energy recovery efficiency can reach about 20%, The design of the energy dissipation suspension has good damping effect and can realize the recovery of vibration energy.