摘要
为观测永磁混悬系统的状态并进行控制,首先建立以间隙、速度和磁密为状态变量的非线性模型,然后采用反馈线性化将其变换为线性模型,再应用线性理论设计降维观测器和控制器,最后得到原非线性模型的状态观测值和控制器并进行仿真。仿真结果表明:混悬系统经反馈线性化后,基于观测器进行状态反馈,能够具有很好的动态性能,系统输出能快速地跟踪给定输入。
Aiming to observe states and control a hybrid suspension system with permanent and electric magnets, firstly, a nonlinear model was established based on gap ,velocity and acceleration, secondly, it was transformed into linear model by feedback linearization, thirdly, a reduced-order observer and a controller were designed by linear theory. Finally, hybrid system has a simulation on nonlinear model. The result shows that system still has good dynamic performance and the outputs can fleetly follow the inputs by state feedback based on observer after feedback linearization.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第16期5127-5129,共3页
Journal of System Simulation
基金
国家自然科学基金(60404003)
关键词
混合悬浮
非线性
反馈线性化
降维观测器
状态反馈
hybrid suspension
nonlinear
feedback linearization
reduced-order observer
state feedback