针对结构振动与电磁驱动AM D控制系统(以下简称EM D系统)的相互作用问题,提出了是否考虑、以及考虑何种程度相互作用的三种理论计算模型并进行了试验研究。首先试验比较了EM D系统在正弦扫频控制电压输入下各阶理论模型预测结果与试验...针对结构振动与电磁驱动AM D控制系统(以下简称EM D系统)的相互作用问题,提出了是否考虑、以及考虑何种程度相互作用的三种理论计算模型并进行了试验研究。首先试验比较了EM D系统在正弦扫频控制电压输入下各阶理论模型预测结果与试验结果的差异,验证了各模型对系统的描述精度;其次以E l C en tro地震波输入为例,试验比较了3种计算模型在3种控制算法共9种试验工况下,EM D控制系统对结构地震响应控制效果的影响。本文所有试验结果均表明只有考虑相互作用、并且充分考虑高阶相互作用才能最佳地描述EM D控制系统在结构中真实的工作状态,才能充分发挥EM D系统对结构振动的控制作用,从而为实现高性能的结构振动主动控制试验与应用奠定基础。展开更多
A kind of active vibration control method was presented through optimal design of driving load of multi-body system with quick startup and brake. Dynamical equation of multi-body system with quick startup and brake wa...A kind of active vibration control method was presented through optimal design of driving load of multi-body system with quick startup and brake. Dynamical equation of multi-body system with quick startup and brake was built, and mathematical model of representing vibration control was also set up according to the moving process from startup to brake. Then optimization vibration control model of system driving load was founded by applying theory of optimization control, which takes rigid body moving variable of braking moment as the known condition, and vibration control equation of multi-body system with quick startup and brake was converted into boundary value problem of differential equation. The transient control algorithm of vibration was put forward, which is the analysis basis for the further research. Theoretical analysis and calculation of numerical examples show that the optimal design method for the multi-body system driving load can decrease the vibration of system with duplication.展开更多
A kind of active vibration control method was presented based on active damping and optimization design for driving load of multibody system with quick startup and brake. Dynamical equation of multibody system with qu...A kind of active vibration control method was presented based on active damping and optimization design for driving load of multibody system with quick startup and brake. Dynamical equation of multibody system with quick startup and brake and piezoelectric actuators intelligent structure was built. The optimum driving load was calculated by applying the presented method. The self-sensing and self-tuning closed-loop active vibration control in quick startup and brake process was realized. The control algorithm, using local velocity negative feedback, i.e. the output of a sensor only affects the output of the actuator collocated, can induce damping effectively to actively suppress the system vibration. Based on the optimization design for driving load of multibody system with quick startup and bake, the active damping of piezoelectric actuators intelligent structure was used to farther suppress the vibration of system. Theoretical analysis and calculation of numerical show that the proposed method makes the vibration of system decrease more than the optimal design method for driving load of multibody system.展开更多
A semi-active magneto-rheological （MR） damper was experimentally investigated and compared to an original equipment manufacturer （OEM） damper for a passenger vehicle, by using a quarter car models. A full-scale tw...A semi-active magneto-rheological （MR） damper was experimentally investigated and compared to an original equipment manufacturer （OEM） damper for a passenger vehicle, by using a quarter car models. A full-scale two-degree-of-freedom quarter car experimental set-up was constructed to study the vehicle suspension. On-off skyhook controller and Fuzzy-Lyapunov skyhook controller （FLSC） were employed to control the input current for MR damper so as to achieve the desired damping force. Tests were done to evaluate the ability of MR damper for controlling vehicle vibration. Test results show that the semi-active MR vehicle suspension vibration control system is feasible. In comparison with OEM damper, on-off and FLSC controlled MR dampers can effectively reduce the acceleration of vehicle sprtmg mass by about 15% and 24%, respectively.展开更多
文摘针对结构振动与电磁驱动AM D控制系统(以下简称EM D系统)的相互作用问题,提出了是否考虑、以及考虑何种程度相互作用的三种理论计算模型并进行了试验研究。首先试验比较了EM D系统在正弦扫频控制电压输入下各阶理论模型预测结果与试验结果的差异,验证了各模型对系统的描述精度;其次以E l C en tro地震波输入为例,试验比较了3种计算模型在3种控制算法共9种试验工况下,EM D控制系统对结构地震响应控制效果的影响。本文所有试验结果均表明只有考虑相互作用、并且充分考虑高阶相互作用才能最佳地描述EM D控制系统在结构中真实的工作状态,才能充分发挥EM D系统对结构振动的控制作用,从而为实现高性能的结构振动主动控制试验与应用奠定基础。
文摘A kind of active vibration control method was presented through optimal design of driving load of multi-body system with quick startup and brake. Dynamical equation of multi-body system with quick startup and brake was built, and mathematical model of representing vibration control was also set up according to the moving process from startup to brake. Then optimization vibration control model of system driving load was founded by applying theory of optimization control, which takes rigid body moving variable of braking moment as the known condition, and vibration control equation of multi-body system with quick startup and brake was converted into boundary value problem of differential equation. The transient control algorithm of vibration was put forward, which is the analysis basis for the further research. Theoretical analysis and calculation of numerical examples show that the optimal design method for the multi-body system driving load can decrease the vibration of system with duplication.
基金Project(50390063) supported by the National Natural Science Foundation of China
文摘A kind of active vibration control method was presented based on active damping and optimization design for driving load of multibody system with quick startup and brake. Dynamical equation of multibody system with quick startup and brake and piezoelectric actuators intelligent structure was built. The optimum driving load was calculated by applying the presented method. The self-sensing and self-tuning closed-loop active vibration control in quick startup and brake process was realized. The control algorithm, using local velocity negative feedback, i.e. the output of a sensor only affects the output of the actuator collocated, can induce damping effectively to actively suppress the system vibration. Based on the optimization design for driving load of multibody system with quick startup and bake, the active damping of piezoelectric actuators intelligent structure was used to farther suppress the vibration of system. Theoretical analysis and calculation of numerical show that the proposed method makes the vibration of system decrease more than the optimal design method for driving load of multibody system.
基金Project(51175265) supported by the National Natural Science Foundation of ChinaProject(CX10B_114Z) supported by Jiangsu College Graduate Research and Innovation Program,China+1 种基金Project(BK2008415) supported by the Natural Science Foundation of Jiangsu Province,ChinaProject(Y1110313) supported by the Natural Science Foundation of Zhejiang Province,China
文摘A semi-active magneto-rheological （MR） damper was experimentally investigated and compared to an original equipment manufacturer （OEM） damper for a passenger vehicle, by using a quarter car models. A full-scale two-degree-of-freedom quarter car experimental set-up was constructed to study the vehicle suspension. On-off skyhook controller and Fuzzy-Lyapunov skyhook controller （FLSC） were employed to control the input current for MR damper so as to achieve the desired damping force. Tests were done to evaluate the ability of MR damper for controlling vehicle vibration. Test results show that the semi-active MR vehicle suspension vibration control system is feasible. In comparison with OEM damper, on-off and FLSC controlled MR dampers can effectively reduce the acceleration of vehicle sprtmg mass by about 15% and 24%, respectively.
