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Presents the design of longitudinal control for ASTOVL lift-fan aircraft, a multi-variable, strong-coupling, complicated nonlinear system to make the system nonlinear offset and decouple, and the method used for linear system in designing the system to gain expectant flying qualities and the combination of aerodynamic control surfaces with thrust vectors to delay the control surfaces getting into saturation, and the minimum N-norm generalized inverse theorem of weighted generalized inverse adopted to apportion the moments commands, which make the control surfaces gain appropriate deflection and the simulation results to verify the dynamic inverse control laws designed really make the system nonlinear offset and decouple; when one command is given, only this output will response, and others do not response; when all commands are given together, the responses will be just the linear superpose of the response of each command, therefore the operation of the pilot will be simplified greatly.

摘 要： ASTOVL升力风扇飞机是多变量、强耦合、复杂的非线性系统，采用非线性动态逆理论设计控制律以实现系统的非线性对消及解耦，然后，采用线性系统的设计方法对系统进行设计，以使系统获得期望的飞行品质。同时，考虑到ASTOVL升力风扇飞机是由气动舵面和推力矢量融合作用的，为了延缓各舵面进入饱和的时间，采用加权广义逆中的极小N-范数广义逆定理分配力矩指令，从而使各舵面达到适当的偏转角。并将所设计的控制律进行了仿真，结果验证了所设计的动态逆控制律使系统实现了非线性对消和解耦，单个指令作用时，只有该项响应，其余不受影响；所有指令作用时，其结果就等于单个指令作用时的线性叠加，这样使驾驶员的操纵大大简化而易于控制，从而大大降低了飞行事故率。

The output waveform may be offset with respect to ground if the inverting input of the threshold detector, A1, is offset with respect to ground.

如果阈值检测器A1的反相输入端对地有一个偏置电压，那么输出波形也将带有一个对地的偏置。

S1 is then changed to position 1. The voltage stored on C1 is inserted between the output and inverting input of the amplifier and the output of the amplifier changes by VIN to maintain the amplifier input at the input offset voltage. The output then changes from (VOS + IbiasR2) to (VIN + IbiasR2) as S1 is changed from position 2 to position 1. Amplifier bias current is supplied through R2 from the output of the amplifier or from C2 when S1 is in position 2 and position 1 respectively. R3 serves to reduce the offset at the amplifier output if the amplifier must have maximum linear range or if it is desired to DC couple the amplifier.

接着 S1 拨到位置 1，使 C1 的电压加在放大器的输出端和反相输入端之间，(由于电容端电压不能突变，所以)输出端的电压将产生大小等于 VIN 的变化，使放大器输入端维持输入失调电压，即当开关 S1 从位置 2 拨到位置 1 时，输出端电压将从(VOS + IbiasR2)变为(VIN + IbiasR2)。S1 处于位置 2 时，放大器的偏置电流是由输出端经电阻 R2 提供的，当 S1 转向位置 1 时则由 C2 提供。R3 的作用是降低输出失调电压，如果要求放大器具有最大的线性范围，或者采用直流耦合，就应该使用该电容。

In this case special measures are taken to keep a count of the cumulative DC offset, and to modify the codes if necessary to make the DC offset always tend back to zero.

在这种情况下，必须作特殊的测量来计算直流输出的累积误差，并且在必要时改变电压大小来让误差永远趋向零。

Delta offset is an acceptance of maximum positive deviation from the offset value.

三角垂距是最大正面偏差取从垂距的值。

Following the introduction of the basic principle of OFDM, some nonideal effects on the performance of OFDM systems are discussed, such as carrier frequency offset, symbol timing offset and sampling clock deviation.

本文在简要介绍了OFDM的基本原理、关键技术的基础上，针对同步问题进行了深入研究。首先分析了同步偏差中的频率偏差、符号定时偏差及采样时钟偏差对系统性能的影响。

With four-color offset press Heidelberg, Germany, imports off, the four opened octavo series offset press equipment and five-color gravure printing machine .

本公司创办于2004年，座落在温州苍南印刷城龙港柳南路117号，拥有德国海德堡四色胶印机，进口对开、四开、八开胶印机系列设备和五套色凹版印刷机。

With four-color offset press Heidelberg, Germany, imports off, the four opened octavo series offset press equipment and five-color gravure printing machine.

本公司创办于1992年，座落在温州苍南印刷城钱库大道105号，拥有德国海德堡四色胶印机，进口对开、四开、八开胶印机系列设备和五套色凹版印刷机。

The Company for printing family has decades of printing experience, with the development of the printing industry, product innovation, the company has been increasing over the equipment, the company now has Heidelberg, Germany CP2000 four large off-color, four-color four-opened , octavo four-color offset press computer alcohol, UV-opened four four-color offset press, Canada Jakarta 8 hair colors UV Flexo printing presses, automatic mounting machine, automatic folder gluer, automatic reel printing presses, Japan BIGBUFFALO cutter, Taiwan Bi Sheng automatic die-cutting machine, automatic die-cutting machine waste indentation, Germany fully automatic dual-use laminating machine, UV coating machine, calenderingú, Germany Photographic drying SACK version of dozens of machines and other devices.

本公司出于印刷世家，有几十年的印刷经验，随着印刷业发展，产品不断创新，公司设备一直增加，本公司现拥有德国海德堡CP2000型大对开四色、四开四色、八开四色电脑酒精胶印机，UV四色四开胶印机，加拿大雅加发8色全UV柔性版印刷机，全自动裱纸机，全自动糊盒机，全自动卷筒印刷机、日本大水牛切纸机，台湾铋晟全自动模切机，全自动模切压痕排废机，德国全自动双用复膜机，UV上光机、压光压纹机，德国SACK感光晒版机等几十台设备。

Japan now has four-color offset press Komori, Heidelberg, Germany, the CP-2000 off-colored, two-color offset press Roland Web-eight full-color stickers trademark printing presses and prepress, India, and other one-stop production equipment .

现拥有日本小森四色胶印机、德国海德堡CP-2000型大对开五色、罗兰双色胶印机全轮转多功能八色不干胶商标印刷机及印前、印后等一条龙生产设备。

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。