中文摘要：

以某越野车为样车，首次建立了装有动力调节悬架系统的车辆动力学频域模型，采用阻抗传递矩阵获得油路的阻抗阵，通过数值优化迭代寻根方法，求解模态特征值，并与建立的不带横向稳定杆的整车模型和带横向稳定杆的整车模型进行模态参数对比和模态分析．结果表明，动力调节悬架系统使车辆在保持原有乘坐舒适性的同时，能有效抑制转弯时车体的侧倾运动，且大幅降低簧下的扭转刚度，越野路面时车轮能充分接触地面，提高车辆通过性能．

英文摘要：

This paper took an SUV vehicle as the prototype, established a frequency-domain model of vehicle with KDSS-fitted, based on the transfer matrix method to derive the impedance matrix of hydraulic subsystem, solved the eigenvalue in numerical optimization iteration method, compared and analyzed the modal parameters of KDSS-fitted vehicle, ARB-fitted vehicle and no-ARB-fitted vehicle model. The results indicate that KDSS is able to effectively reduce the roll motion of sprung mass in the same way as anti-roll bar, and simultaneously maintain the ride comfort performance. At the same time, the wheel torsion stiff- ness, compared with ARB, is greatly reduced. This gives the wheels full contact with the ground and im- proves the passing ability of the vehicle.