A research on the decoupling of a 6 DOF half vehicle suspension and its hierarchical vibration control

作者：Wu Long^*; Wen Xia

来源：Qiche Gongcheng/automotive Engineering, 2010, 32(2): 148-154+167.

• Base layers
• Central control
• Computing time
• Control objectives
• Control schemes
• Control strategies
• Control variable
• Force analysis
• Hierarchical control
• Linear quadratic regulator
• Mass centers
• Parallel Computation
• Ride comforts
• Road excitations
• Sprung mass

Through force analysis on the sprung mass of a 6 DOF half vehicle suspension, the quantitative coupling relationship between the front and rear quarter suspensions is derived, and based on which a layered vibration control algorithm is constructed. The vertical and pitch accelerations at the mass center of suspension are taken as the control objectives of central control layer. Two base layers formed by the front and rear quarter suspensions adopt H∞and LQR (linear quadratic regulator) control strategies respectively and receive coordinating instructions from central control layer. The results of simulation with MATLAB show that compared with traditional control, the great reduction in computing time due to the possibility of parallel computation of control variables for the front and rear quarter suspensions enables layered control scheme exert thorough control based on road excitation, so achieving the aim of improving the ride comfort of vehicle.

• 出版日期2010