摘要
研究基于速度与阻尼力反馈的LQG最优控制算法,实现半主动悬架减振器阻尼的实时调节与控制,建立了某轿车半主动悬架AMESim仿真模型,利用MATLAB/LQG工具进行参数优化,根据LQG最优控制方程编制S-Function控制程序,在AMESim环境与MATLAB联合进行动态仿真。仿真试验表明:在1Hz-12Hz激振频率范围内,阻尼力-速度试验外特性与理想外特性吻合,阻尼力调节过程明显,随着频率增大,有轻微的非线性双向空程畸变,试验虚拟样机合理。
the study of LQG optimal feedback speed and damping force control algorithm based on real time, regulation and con- trol to realize semi-active suspension damper, a semi-active car suspension AMESim simulation model, parameter optimization us- ing MATLAB/LQG tools, according to the equation system S-Function control simulation model of LQG optimal control, and dy- namic simulation in AMESim environment with MATLAB. Simulation results show that： in the 1Hz-12Hz frequency range, the damping force velocity characteristic test of external characteristic and ideals, damping force regulating process significantly, as the frequency increases, a two-way process of distortion was slight, the virtual prototype of a more reasonable test.
出处
《自动化与仪器仪表》
2013年第6期5-7,共3页
Automation & Instrumentation
