查询词典 servo system

After analyzing and studying the over all structure of ordinary C6163 lathe, we use numerical control technology to re-equip ordinary C6163 lathe for automation and precision. We attach the numerical control device and execution elements to the lathe and choose an appropriate machinery servo-system and computer system.

摘 要：本次毕业设计的题目是 C6163型车床的经济型数控改造设计，应用数控技术对C6163普通车床进行自动化和精密化改造，改造技术主要为：在车床上附加数控装置和执行元件，选择合适的机床伺服系统和计算机系统等。

Transmission chain of gun servo system has backlash , it is one of the important factors that affect dynamics performance and stable precision of gun system.

火炮伺服系统传动链存在传动齿隙，齿隙是影响火炮伺服系统动态性能和稳态精度的重要因素之一。

In case of the advantage of pneumatic system, electro-pneumatic servo system has strong adaptivity, so it will be found wide application in some special cases (e. g. great vibration and strong radiation).

除了气动系统本身的优点之外，电—气伺服系统有很强的适应能力，因此在一些工况特殊的场合有广阔的应用前景。

This method makes the servo system modeling more convenient and closer to reality system model.

该方法使伺服系统的建模更加简便并更加接近真实的系统模型。

This paper studied an electronic-hydraulic servo force loading system, which is applied on frozen soil frost heave experiment. This system simulates the pressure acted on the subgrade by train in low temperature situation.

本文以应用于冻土冻胀试验的电液伺服力加载系统为研究对象，该系统在一定低温条件下，模拟火车运行时给路基带来的压力。

The hardware system of this machine is as follow: taken AC-servo-motor as power, taken ball screw as driving equipment, taken position transducer as feedback source gainer. The CPU of UP-PC is used of embedding chip, PXA-255 ofInter, and its system board is directly used of Intel's Sitsang board. On the other hand, the CPU of DOWN-PC is chosen of PMAC-104,which is the product of Motorola.

本铣床系统硬件构成如下：动力源选用交流伺服电机，传动装置采用丝杠，反馈量由位置传感器获得，上位机的处理器为嵌入式芯片Intel公司SXcale架构的PXA-255，上位机的系统板直接选用Intel公司的Sitsang板，下位机选用Motorola公司的运动控制器PMAC-104。

Third chapter illustrate the design scheme for justification development system, amalgamation steer the argumentum;And code design in the detailed design sum the database design of whole system;Recommended the detailed design information of sum of the shuttering cake structure of the aetioporphyrin system;Analyzed the library to manage the system's appliance demand, according to the database design theory proptosis of one-step and one-step earth joint system demand manual, local ER general view, overall situation ER general view, system relation modal, leaven the modal;Arrangement in parallel proptosis the valve key source of the said system code in the procedure the amalgamation commit the interpretation, justification.

第三章说明开发系统的设计方案，并进行论证；以及详细设计中的代码设计和整个系统的数据库设计；介绍了本系统的模块结构和详细的设计信息；分析了图书馆管理系统的应用需求，按照数据库设计理论一步一步地给出了系统需求说明书、局部ER图、全局ER图、系统关系模式，子模式；并列出了该系统的关键源程序中的代码并做解释、说明。

Therein, by adopting the ISCSI protocol, the local data storage sub-system constructs the circuital access pattern of the taxation data. The system eliminates the unbalance phenomena between the capability and the demand of the data storage under the traditional bus storage pattern. Under the centralized control pattern, it provides the information access and shares service with the great data volume, the high speed of data transportation and the high availability for the taxation system. By remotely building a backup data center that is totally consistent with the local data center on the IT foundational fabric, the remote data backup sub-system uses the geographical dispersibility of the remote data center and adopts the LVR software replication technology. It implements the synchronous data replication between the local and remote data center, changes the zero standing capability on the great disaster event under the single data center pattern and raises the standing capability on the disaster events for the application and data in the taxation system. By adopting the dynamic replication technology between the heterogeneous data source, the heterogeneous data conformity sub-system successfully shields the various heterogeneous ingredients of the present system.

其中，本地数据存储子系统采用ISCSI协议构建了税务数据网络存储模式，消除了传统总线型存储模式下数据存储性能和存储需求之间的失衡现象，在集控管理模式下为税务系统提供了超大数据容量、高数据传输率和高可用性的信息存取和共享服务；远程数据备份子系统通过在异地构建一个和本地数据中心IT基础架构完全一致的备份数据中心，利用远程数据中心在地理上的分散性，基于LVR软件复制技术实现了本地和远程数据中心之间信息的实时同步，改变了过去单一数据中心模式下对大型灾难事件的零抗灾能力，提高了税务系统内应用和数据对灾难性事件的抵御能力；异构数据整合子系统采用异类数据源动态复制技术，成功屏蔽了目前系统内存在的各项异构成分。

For finding out to agree with a point in the social responsibility of the business enterprise and the circulation the economic lawmaking, this selected works takes a market quasi- go into the system,manufacturer responsibility extension system,circulation economy evaluation the index sign system system,economic incentive system,the environment risk guard against system and across the profession coordination system to discuss how to enhance the business enterprise path of social responsibility in the circulation the economic lawmaking.

为了在企业的社会责任与循环经济立法中找到契合点，本文选取市场准入制度、生产者责任延伸制度、循环经济评价指标体系制度、经济激励制度、环境风险防范制度和跨行业协调制度，以论述如何在循环经济立法中强化企业社会责任的途径。

Firstly, the thesis mainly deals with major social pension system problems of market economy such as its target and orientation, pattern and degree in the condition of market economy. Then, I analyze numerous systems that constitute the reform of social pension system such as system construction, mechanism construction and institution construction, expounding the social pension system"s reform from system, mechanism, and institution three aspects in the way of from exteriority to interiority, from far - side to near - side, from low - level to high -level.At last, I put forward specific train of thought about how to perfect the social pension system"s reform, Analyzing the specific train of thought constituting pension balance through the analysis of pension balance through the analysis of the prediction the revenue and expenditure of pension.Analyzing the particular train of thought that further adjusting and improving the basic social pension budget through real calculation and research. Analyzing the system bound and developing direction of free employees through actual research. All these have key practical and deeply strategic significance in enriching reform theory, exploring reform method, instructing reform practice, as well as promoting the coordination of society and economy.

本论文既从系统和环境的观点出发，研究了市场经济条件下养老保险改革的目标和方向、养老保险制度模式、养老保险保障程度等涉及养老保险体系基本定位的问题；又从整体和局部的关系出发，分析研究了构成养老保险改革的制度建设、机制建设和体制建设等诸多子系统，从制度、机制和体制建设三个层面由表及里，由近及远，从低层次到高层次，由微观到宏观论述养老保险改革；在此基础上，提出市场经济条件下完善养老保险改革的具体思路，通过实际测算和调研，研究基本养老金计发办法进一步调整和完善的具体思路；通过实际调研，研究灵活就业者参保的体制障碍和发展方向；通过基金收支预测实证分析，研究构建基金平衡机制的具体措施，探索论证养老保险改革思路的可行性；这对于丰富养老保险制度改革理论，探索改革思路，指导改革实践，促进社会经济协调发展，都具有重要的现实意义和深远的战略意义。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。