查询词典 servo

In this thesis, the mathematic model of servo system is set up, the contour error in straight line and circular interpolation movement on the duplex servo-system is analyzed, and the method to raise the contour accuracy of the movement track is put forward.

本论文建立了数控伺服进给系统的数学模型，对双轴进给系统在作直线和圆弧插补运动时形成的轮廓误差进行了数学分析，并指出了提高试验台运动轨迹轮廓精度的方法。

Servomechanism is one of most important subsystem of rocket, and servo valve is the core part of servomechanism. Feedback stick is a precise and low stiffness part and its machining quality and stiffness accuracy determine the accuracy and reliability of servo valve working.

伺服机构是火箭最重要的分系统之一，而伺服阀是伺服机构的核心，反馈杆是伺服阀中的精密低刚度元件，它的加工质量和刚度精度直接影响伺服阀的工作精度和可靠性。

To improve the manufacturing capability of shoe tree in our country and enhancethe market competition, this paper studys a new method of motion control formachining shoe tree with NC machinetool. This paper discusses a method ofoptimizing the transmission system ,analyzing the stability of Servo System andascertaining every gains of servo system through dynamics emulation, analyzing themotion control of velocity and acceleration, programming to build NC programautomatically and developping a trajectory emulation software to emulate the tool'smachining movement.

为了提高我国鞋楦制造水平，增强产品市场竞争力，本文研究了鞋楦数控加工运动控制方法；对鞋楦机床的数控进给传动系统进行了优化设计和载荷匹配分析；分析了伺服控制系统的稳定性，并通过动态仿真确定伺服系统各环节的增益系数；分析了鞋楦加工运动速度和加速度控制方法；编软件自动生成数控程序；最后开发了鞋楦数控加工仿真软件。

The application of H〓 control theory in robust control of sonar array servo system is studied in the thesis. The solution of singular H〓 control problem is investigated deeply, and the problem of sonar array servo system's generalized system being singular is solved. Numerical simulation is carried through at last.

本文还对H〓控制理论在声纳基阵伺服系统鲁棒控制中的应用进行了理论研究，对奇异H〓控制问题的解法进行了较深入的研究，并解决了猎雷声纳基阵伺服系统增广系统为奇异控制对象的控制问题，最后进行了数字仿真。

To improve the characteristics of the system,an antenna servo controller based on DSP is developed.In the servo system,a new algorithm based on the exponential trending rule discrete sliding mode variable structure algorithm is used and theoretical analysis and experimental simulating are done.

为改善天线系统的性能，实现了基于DSP的天线伺服控制器，在设计的天线伺服系统中应用基于指数趋近率的离散滑模变结构控制算法，并且进行了设计分析和实验仿真。

Sliding mode variable structure space vector modulate direct torque control is selected for electro-servo system, and different parts of servo system is modeled.

由于海浪的随机扰动等因素的影响，对电磁转矩的控制成为了伺服控制的关键，最终确定伺服系统的控制方式采用滑模变结构空间矢量直接转矩控制，并建立了系统各部分的数学模型。

At first, configuration method of stabilization of LOS and survey of development of AOEP in the world are summarized in this paper, and then principal of how movement of airplane can be isolated by a two-axis-platform is analyzed theoretically. Requirements of stabilization of LOS to servo system are put forward. It provides the basis of theory for designing servo system.

本文首先概述了国内外光电平台的结构和视轴稳定方法以及光电平台的发展概况，介绍了常用的稳定与跟踪控制方法；进而从理论上分析了两轴光电稳定平台隔离载体角运动的原理，总结并提出了视轴稳定对伺服系统的性能要求，从而为伺服系统的设计提供了理论依据。

The holistic design of the system and resolved the designs of software and hardware based on VXI bus are put forward according to the demand of test system. The hardware and software is designed, including the formation and design of hardware system, visual instrument software architecture, program design for instrument driver, high speed real-time data collection. In the dynamic test program, the idea of"software is instrument"was applied to meet the diverse test demands. Last, it is proposed that the VXI test system be developed to more totalization and networked. The basic theory of system identification was introduced briefly at first. The principle of spectrum analysis system identification based on Wiener-Hopf equation was expatiated. and the questions in applying Peusdo Random signal as spectrum analysis methods stimulate signal was studied, The generation principle of the peusdo random signal is researched, the characteristic of peusdo random are analyzed from time domain and frequency domain, the inverse repeat peusdo random signal is brought forward to make up the shortage of ordinary peusdo random signal. And a new chaos genetic algorithmis presented to solve the unprecise problem of the traditional method. In the servo valve dynamic characteristic test system, the spectrum analysis methods was applied successfully, the servo valve dynamic characteristic could be acquired rapidly and exactly, the test results were analyzed and the ameliorate methods were brought forward at last.

结合航天某集团液压测试中心测试系统的需求，提出了基于VXI总线的液压测试系统的整体设计方案，完成了测试系统的硬件设计与软件设计，包括硬件系统构成与设计、虚拟仪器软件结构、仪器驱动程序设计、高速同步实时数据采集等内容；以伺服阀动态特性测试为例设计了测试模块，该模块体现了VXI总线仪器软件开发所倡导的"虚拟仪器"的思想，以软件的灵活应用满足了不同的测试需求；结合自动测试系统的发展，研究了VXI测试系统与网络技术结合，实现各种软硬件资源共享，进一步提高设备及数据的利用率和系统的扩展性，使自动测试向综合化、网络化方向发展；研究了伪随机信号作为谱分析法辨识的激励信号时存在的问题，讨论了伪随机信号的产生机理，从频域和时域分析了伪随机信号的性质及其应用，提出了用逆重复伪随机信号弥补了普通伪随机信号的不足，并以混沌遗传算法对逆重复伪随机信号产生过程中的参数进行优化，可以更合理而不是凭经验产生需要的逆重复伪随机信号。

This dissertation applies virtual instruments technique in the field of servo valve CAT for the first time and makes a servo valve static and dynamic state characteristic test bedstand based on virtual instruments. Relevant theories and methods are also studied.

本文首次将虚拟仪器技术应用在电液伺服阀CAT领域，研制出一套基于虚拟仪器的电液伺服阀静、动态特性测试综合实验台，并对电液伺服阀静、动态特性测试的有关理论及方法进行了研究和探索。

A new parameterized controller is designed for a hard disk drivehead positioning servo system which currently uses the voice coil motor as its servo mechanism.

针对以音圈电机作为伺服机构的硬盘磁头定位伺服系统的性能要求，设计了一个参数化的控制器并进行仿真和实验研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。