It provides step-by-step details on the procedure for customizing your database, and includes some hooks on how to control access rights to certain fields. 本文提供了定制数据库过程的一步步的细节内容,并且包括一些如何对某些字段控制访问权限的钩子函数。
The mathematic model of thermal drive parts was deduced from the thermal conduction differential equation, and the model parameters were determined based on the experiments and step-by-step fitting method, then the combined control strategy of time optimum control and temperature double-ring control was adopted. 由导热微分方程推导热驱动部件的数学模型,在实验的基础上采用分段逐级拟合指数型函数的方法确定此模型的参数,然后采用时间最优控制和双环温度控制相结合的策略。
On the basis of the type of counter, step-by-step matrix control mode with pure-contact circuit is achieved. 在此基础上,实现纯触点电路的步进式矩阵控制。
Application of Mark Flow Graph and Step-by-step Instrument in Sequence Control System 标识流图和步进指令在顺序控制系统中的应用
Results show that in the system, step-by-step control is realized, and vibration and striking are largely decreased too. 结果表明,该控制系统能实现带头的自动回避,可以有效地减小冲击。
At the same time, used the VHDL language control to be possible to act according to step-by-steps the electrical machinery difference, the change program parameter might implement the different model to step-by-step the electrical machinery control, was advantageous in step-by-steps the electrical machinery widespread application. 同时,采用VHDL语言控制可以根据步进电机的不同,改变程序参数就可以实现不同型号步进电机控制,有利于步进电机的广泛应用。
Considering the influences of the processing factors on the system model and due to the requirements of high response and high position accuracy of the step-by-step control system, and electro-hydraulic servo system including the position-adjusting loop and the pressure-adjusting loop is presented. 综合考虑了多种因素对系统模型的影响,针对步进控制系统的高响应和位置精度的要求,开发带有位置调节和压力调节的电液伺服控制系统。
This provides theoretic and experimental base for developing high-level step-by-step control system and improving installation of coiler and quality of production. 为研制高水平的热轧卷取机步进控制系统,提高卷取机装机水平和卷取质量提供了理论基础与实验依据。
Following the target of equipment spare parts management system, step-by-step approach to system development is divided into two phases, to facilitate software development risk control. 根据设备备件管理系统的开发目的,采用循序渐进的方法,将系统开发分为两个阶段,便于软件开发风险控制。
A step-by-step methodology of planning and control system, which is in accord with the feature of a specific firm, is also Put forward. 并针对上海某企业的现实情况,提出了一套符合企业特色的、循序渐进式的生产计划与控制系统设计方案。
In the system, the variable comes from the sensors are delivered to the microcontroller, the output signal can drive the step-by-step electromotor to adjust the angle of the valve to control each the variable of the system. 本系统中由底层传感器采集来的信息送入单片机进行处理,输出的控制指令驱动步进电机,带动各个阀门的开闭程度进而调整各变量。
The active defense system adopts the combination of access strategy and step-by-step intrusion detection system to achieve its functions and consists of several modules, access control, intrusion detection and border firewall linkage. 主动防御系统采用准入策略与分步式入侵检测系统相结合的方式来实现其功能,将系统分为准入控制、入侵检测、边界防火墙联动等模块,并定义了相互的接口,给出了具体方案。
Essence of step-by-step concurrence of thematic mapping in the computer environment, and basic concepts based on cybernetics, thematic mapping control characters of step-by-step concurrence are analyzed and expounded. 分析和阐述了计算机环境下专题制图分布协同控制的本质特征。
The third part is an example of how ES Company step-by-step set up and improve activity based standard costing system and makes it effective for costing calculation and internal control. 第三部门,是通过实例详细介绍ES公司如何一步步建立并完善作业标准成本核算系统并使之有效的进行成本核算和控制。