This paper mainly is that the traditional CA6140 lathe electricity control system is Reformed the numerical control the open-loop control system. 本文主要是将传统的CA6140车床的电气控制系统改造成为数字控制的开环控制系统。
First, this paper studied the overall scheme of electronically controlled LPG injection engine's multiple times ignition system. According to this scheme, the open-loop control strategy was chosen. Then, the hardware and software of this system were designed. 首先本文对电控LPG喷射发动机多次点火系统作了总体方案研究,相应选择了控制策略,最后在此基础上完成了系统硬件和软件的设计。
It can be abstracted into a control system model. This model changes from an open-loop control system with lower accuracy to a close-loop control system with higher accuracy. 将其抽象为控制系统模型,则体现为从控制精度较低的开环控制系统向控制精度较高的闭环控制系统转化。
If a fighter is asymptotically stable in an open-loop, the strong stable control system is designed based on series connection observers. 当歼击机开环稳定时,设计了基于串联观测器的强稳定控制器。
The crane overload protection system is a open-loop control system. 该系统为一开环控制系统。
A High Precision Open-loop Control Positioning System for a Diffraction Grating Ruling Machine 衍射光栅刻划机的高精度开环定位系统
Based on analysis and comparison for several classical hydraulic loop of hydraulic feeding systems, it studies the principle of discharge which is open-loop numerical control, and designs the hydraulic feeding system that suits for numerical control. 在对液压进给系统的几种经典液压回路的分析与比较的基础上,提出了流量开环数字控制的原理,并设计出了适合于数字控制的液压进给系统。
The Open-Loop Programme Control System for Hydraulic Hammers 液压锤开环程序控制系统
In order to realize the auto-leveling for short fragment, the Check before control open-loop control method is adopted in the control system design of the draw frame. 为了实现超短片断自调匀整,并条机采用先检后控的开环控制策略。
In this article the orientation deviation in open-loop control system for magnetic flux is first discussed, then the eliminating of the orientation deviation in compound vector control system is analysed, in which correct orientation control of magnetic field is obtained through correction. 本文首先讨论磁链开环控制系统中的走向偏差,然后分析复合矢量控制系统如何通过校正来消除定向偏差,达到正确的磁场走向控制。
ZT-3 rotor test bed in Department of Mechanical Engineering in Southeast University is a DC motor centered open-loop control system, which speed is controlled by regulating the regulator manually. 东南大学机械系现有的转子实验台ZT-3是一个手动调节调压器来控制直流电动机转速的开环控制系统,配以相关设施可以完成学生测控、振动方面的实验。
The main reformation of the economic numerical controlled lathe focus on feed system of ordinary lathe, and the machine adopted open-loop control system to control longitudinal and transverse feed motion. The step-motor drives the ball guide screw to rotate after receiving the instruction. 经济型数控车床的改造,主要是针对普通车床的进给系统进行数控化改造,控制系统利用微机对纵、横向进给系统进行开环控制,驱动元件采用步进电机,传动采统采用滚珠丝杠。
It proves that the controller is flexible reliable and easy to use, and can be used in other open-loop and accurate step motor control system. 结果表明,该步进电机控制器具有控制灵活,安全可靠,抗干扰性能好等优点,也能应用于机器人等其它步进电机实现开环控制系统要求灵活性且精度较高的场合。
And the simulation model of the closed-loop system is founded in MATLAB ( SIMULINK) enviroment. The contrast research of the open-loop soft start control system and the closed-loop soft start control system is carried out. 利用MATLAB(SIMULINK)建立起仿真模型,对开环控制和功率因数角闭环控制进行了对比仿真分析。
In view of the present major problems of the open-loop control system for economic CNC lathe with stepping motor as feed motor, a newtype of closed-loop control system for stepping motor has been presented in the paper. 针对目前以步进电机驱动的经济型CNC车床开环控制系统存在的主要问题,提出了一种新型的步进电机闭环控制系统。
There are some disadvantages such as oscillating and losing step in traditional open-loop driving control system of three-phase hybrid stepping motor. 传统开环运行的三相混合式步进电动机驱动系统中存在着振荡和失步等不足之处。
The high-speed wire electro-discharge machine in prior art employs the open-loop control system, and this means the output signals to the stepping motor can not be fed back. 目前,国内现有的高速走丝线切割控制系统是开环的,即控制系统对输出给步进电机的信号没有反馈,这样的结构对于加工过程是不安全的。
A closed-loop control strategy and an open-loop control strategy were proposed for the united system, and the system stability and compensation performance was analyzed. 对综合补偿系统提出了检测网侧电流的闭环控制策略和检测负载侧电流的开环控制策略,分析了不同控制策略下的稳定性和补偿性能。
In view of the problems exist in the current drum height adjustment system, Apply electro-hydraulic proportional technology to optimize design the system, research electro-hydraulic proportional open-loop and closed-loop PID control system of shearer drum height adjustment system. 针对当前调高系统存在的问题,应用电液比例技术优化设计采煤机调高系统,分别对采煤机电液比例开环和闭环PID调高系统进行研究。
With drawing the root locus of the closed-loop transfer function and calculating stability margin of the open-loop transfer function, the stability of the proposed power control system is discussed and the control gains of outer and inner loops are designed. 通过绘制闭环传递函数的根轨迹和计算开环传递函数的稳定裕度,分析了所提功率控制系统的稳定性,设计了控制系统的外环和内环控制增益。
A typical aerial vehicles hydraulic system is an open-loop control system which includes a double-gear pump, and a gradient control valve supplying oil for turntable and platform working devices. 高空作业车现有液压系统是双联齿轮泵加优先阀为平台和转台工作装置供油的开式回路。
Finally, the open-loop control principle of clutch control system was researched, and the method to solve the PWM duty cycle was find, for emergency measure in the case of closed-loop controller appear failure. 文章最后研究了离合器自动控制系统的开环控制原理,找到了闭环控制器失效的情况下,PWM的占空比的求解方法。
This quantitative and real-time calculation method is used in open-loop control of four-tower rectification system. 2. 该方案可以实时、定量地寻找变负荷能耗最优参数,用于甲醇四塔精馏系统的开环优化控制。
However, in the electrohydraulic flow matching control ( EFMC) systems, when the electro-proportional valve opens, the electro-proportional pump supplies the required flow by open-loop flow control, and the pressure difference between the system pressure and maximum load pressure is not needed to be preset. 而电液流量匹配控制系统采用开环控制的方式,在控制电比例泵输出系统所需流量的同时控制电比例阀动作,且不需要预设泵与最高负载之间的压力裕度。
The theory analysis about the problems in variable-speed pump-control-motor governing system has been carried out. And the open-loop speed loss compensation method and the closed-loop PID control method are proposed for system speed loss and motor angular displacement control. 对变转速泵控马达调速系统存在的问题进行了理论分析,并针对系统转速降落和马达角位移控制分别提出了开环转速降落补偿方法和闭环PID控制方法。
Using a new Lyapunov function, a new stability criterion for open-loop fuzzy control system based on continuous T-S model is proposed. 利用新型Lyapunov函数,给出基于连续T-S模型的开环模糊控制系统新的稳定性判别条件,最后结合LMI理论利用具体实例验证算法的有效性。
Comparison of the clamping device open-loop control and PID control demonstrates that the open-loop system can not meet the design requirements of the system, and the PID control system should be selected. 对比夹紧装置的开环控制和PID控制的结果发现开环系统不能满足设计要求,液压系统选择PID控制系统。
GPC is suitable for systems with large-lag and non-minimum phase systems those are open-loop unstable. It can realize adaptive control through system identification on line. 广义预测控制适用于有纯时延、开环不稳定的非最小相位系统,并且能在线估计参数,实现自适应控制。
And comparing experiments of open-loop and PID control are conducted to testify the system performance. 通过对比开环控制和加入PID控制的实验进行验证及分析,对系统的性能进行了实际检验。
However, it also has a lot of shortages which is the highly nonlinear and inherently open-loop unstable electromechanical dynamics, and its performance depends on the control system to a large extent. 但它是一个非线性和开环不稳定的系统,对控制系统的依赖性很大。