排序方式: 共有93条查询结果,搜索用时 328 毫秒
1.
介绍了利用西门子S7-200系列可编程序控制器(PLC)实现的真空断路器机械寿命试验自动控制,该设备功能完善,操作简便,可靠性好. 相似文献
2.
针对扭矩传感器静态校准无法完全满足实际需要的难题,设计一种新型100 N·m负阶跃动态扭矩校准装置,并阐述该装置的工作原理和关键技术。校准装置由扭矩产生装置、连接系统、制动系统、信号处理控制系统和空气轴承系统组成,利用火工拔销器产生负阶跃动态扭矩,较大程度上降低负阶跃动态扭矩的下降时间,并采用空气轴承的支承方式提高动态扭矩的传递精度。通过对试验数据进行分析和处理,结果表明该装置负阶跃扭矩产生时间低于0.1 ms。不确定度分析结果显示,该装置的扩展不确定度U为4.22%,扩展因子k为2。 相似文献
3.
4.
5.
6.
《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(7):948-968
This paper presents an approach to design a delay-dependent non-fragile H∞/L2–L∞ static output feedback (SOF) controller for active suspension with input time-delay. The control problem of quarter-car active suspension with actuator time-delay is formulated to a H∞/L2–L∞ control problem. By employing a delay-dependent Lyapunov function, new existence conditions of delay-dependent non-fragile SOF H∞ controller and L2–L∞ controller are derived, respectively, in terms of the feasibility of bilinear matrix inequalities (BMIs). Then, a procedure based on linear matrix inequality optimisation and a hybrid algorithm of the particle swarm optimisation and differential evolution is used to solve an optimisation problem with BMI constraints. Design and simulation results of non-fragile H∞/L2–L∞ controller for active suspension show that the designed controller not only can achieve the optimal performance and stability of the closed-loop system in spite of the existence of the actuator time-delay, but also has significantly improved the non-fragility characteristics over controller perturbations. 相似文献
7.
受电弓主动倾摆系统的研究 总被引:1,自引:0,他引:1
通过对摆式电动车组受电弓主动倾摆系统的分析,建立ADAMS-Matlab控制模型,并对其控制特性进行仿真。结果表明该受电弓主动倾摆系统有良好的频率响应特性;在车体倾摆过程中,受电弓主动倾摆系统能有效减小受电弓滑板中点的横向位移,从而保证列车受流的连续性。 相似文献
8.
9.
10.