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管继富 《鞍山钢铁学院学报》1995,18(3):47-51
提出以8098单片机为步机电机控制器构成塔种控制系统,给出了塔种控制系的基本思想及硬件配置和软件实现;突出体现了单片机8098HSI.HSO的具体应用。该系统具有简单、可靠、实用等特点。 相似文献
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In allusion to easy invalidation of damping valve in vehicle shock absorber caused by the impact from the road surface, the importance of the study of damping valve water hammer pressure is presented. The physical model of damping valve with the circle throttle slice is established. The time for the throttle slice deformation is studied by using the finite software, and the laws that how the structure parameters affect the deformation time are obtained. Combining the theory of water hammer, the water hammer initial and boundary condition of the damping valve is deduced, and the water hammer model of throttle slice is established. The analysis of simulation results indicates that the water hammer pressure amplitude and the amount of water hammer oscillation period can be reduced and the dependability of the valve can be enhanced by modifying the structure parameters and aperture width between slice and valve body. 相似文献
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鞍钢半连轧厂精轧机主传动控制系统从德国引进,采用双闭环逻辑无环流非独立激磁控制。该系统虽为模拟系统,但其设计十分细致。介绍了磁场调节系统的基本原理和其独到之处。 相似文献
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概述了可编程控制器在焦化厂筛焦备煤扩建改造工程中的应用情况。以筛焦系统为例,给出系统联动控制的梯形图程序,介绍了调试经验与体会。 相似文献
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本文介绍了鞍山市轧钢厂万能轧机自动位置控制系统中所用的一种新型绝对位移传感器(ADT)及配套仪表。 相似文献
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车辆双筒式减振器热物性影响规律分析 总被引:4,自引:1,他引:4
为了探讨车辆减振器热物性对其温升的影响规律,建立了某车辆双筒液压充气减振器的热流量传递模型和物理传热模型,推导其导热、对流换热及辐射换热方程,通过热力学第一定律建立减振器热力学模型.利用迭代算法计算出此减振器达到热平衡时的温度和工作时间,并通过台架试验验证了建模的正确性,分析了减振器热物性对其温升的影响规律,最后进行了相关的灵敏度分析.研究结果表明减振器的4种热物性参数:油液密度、油液导热系数、油液比热容、缸体辐射发射率影响其温升特性,而缸体导热系数这一热物性参数对其温升特性无影响. 相似文献
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In order to control the vehicle body position precisely, 1/4 nonlinear mathematical model of hydro-pneumatic suspension is established, and the influence of the frictional force in a hydraulic cylinder is analyzed. The friction characteristics are described based on the LuGre model when the piston of a hydraulic actuator is operated at a low speed. Due to the fact parameters of the friction model are effected by the system condition, an adaptive friction compensation (AFC) controller is designed through the Backstepping method, and a dual-observer has been implemented to estimate the friction state. The global asymptotic convergence of a closed-loop system is proven by the Lyapunov theorem. The simulation results show that the positional accuracy of the adaptive friction compensation yiedls a significant improvement in the vehicle height adjustment as compared to the PID control, demonstrating the effectiveness of the adaptive fiction compensation method in the vehicle height adjustable system of the hydro-pneumatic suspension. 相似文献