The innovative and unique points are as follows. The method of magnetic potential self-balance is put forward applying the characteristic of iron core''s rectangular magnetization curve. The different of ampere-turn is measured by the reasonable design of reactor''s iron core. The feedback compensation system is a closed loop without high gain.
其创新、独特之处在于提出了利用铁芯矩形磁化曲线的特性，建立起直流磁势平衡的思想方法，并通过对电抗器铁芯结构的合理设计，巧妙地实现安匝差检测，构成差流回馈补偿系统，而不是高增益的闭环系统。
In allusion to the characteristic of the closed-loop track railway, the biconditional markers are arranged according to rn sequence.
针对城市轨道交通中列车在线路上循环运行的特点，在分析现有列车定位方法的基础上，提出具有封闭曲线特征轨道线路基于绝对位置编码的列车定位技术。
The absolute positions of rail track can be encoded by the biconditional markers. The train positioning information can be extracted by decoding the exclusive absolute position code. In allusion to the characteristic of the closed-loop track railway, the biconditional markers are arranged according to m sequence.
在轨道线路沿线每个待定位置上设置一个0或1的二值标记，对待定的绝对位置进行编码，通过检测唯一的绝对位置编码值来实现列车的定位。
The train positioning technologies in urban rail transit are analyzed. According to the characteristic that train runs circularly along fixed rail track, train positioning technology based on absolute position encoding is proposed to the closed-loop track railway in urban rail transit. The single biconditional marker, whose value is 0 or 1, is placed on each position of rail track.
针对城市轨道交通中列车在线路上循环运行的特点，在分析现有列车定位方法的基础上，提出具有封闭曲线特征轨道线路基于绝对位置编码的列车定位技术。
For the structural control under seismic excitation, an algorithm of instantaneous optimal prediction control is presented. the algorithm in closed-open loop control includes one step ahead corresponding to the discrete expression of governing equation, the input energy of control force and seismic excitation, thereby it can solve the problem that we must know the information of seismic excitation. Exponent matrix in control is considered as a problem, and we solve it with the precise integration method which has advantages of high efficiency, high precise, not sensitive to time-step and unlimited convergent. Besides, the algorithm in this paper can avoid solving the characteristic vector and the Eigen values of the dynamic state matrix, and can make the exponent matrix to calculate easily, so it is applicable in project.
针对地震激励作用下的结构控制问题，提出一种瞬时最优预测控制算法，该算法采用的开闭环控制策略在控制过程中综合考虑了下一时刻位移、控制力输入能量和地震波能量对结构的影响，解决了传统开闭环控制必须知道整个过程中外扰信息的难题，另外对控制过程中的指数矩阵采用精细积分法来求解，避免求解动力状态矩阵的特征值和特征向量，简化了算法中指数矩阵的计算，提高了计算效率，使得算法具有高效率、高精度、对步长不敏感、无条件收敛的优点。
First carries on the extraction and the mark through the imagery processing algorithm to the symbol image characteristic vertex, then the basis characteristic vertex's image point position and with the image point point-to-point speed's respective corresponding relationships, by the movement estimate algorithm to the unmanned aerial vehicle landing's condition quantity (link speed, angular speed as well as relative landing platform's position and posture) carries on the estimate, takes control system's feedback quantity guidance unmanned aerial vehicle landing the estimated value, and analyzes the influence based on the visual movement estimate factor, finally in the effect which unifies through the return route closed loop simulation confirmation unmanned aerial vehicle landing control system and the visual algorithm.
首先通过图像处理算法对标志图像特征角点进行提取和标记，然后根据特征角点的像点位置和和像点平移速度的各自对应关系，由运动估计算法对无人机着陆中的状态量（线速度，角速度以及相对着陆平台的位置和姿态）进行估计，将估计值作为控制系统的反馈量引导无人机着陆，并分析影响基于视觉运动估计的因素，最后在通过回路闭环仿真验证无人机着陆控制系统与视觉算法相结合的效果。
In the end this paper introduces the whole and hardware and software controlling system of the wall-polishing robot, the controlling system adopts 8751 singlechip microcomputer, SA4828 CMOS chip and transducer, it can change the transverse velocity of angle grinding machine according to the uneven characteristic of the metope, and it achieves closed loop control.
最后本文阐述了墙面抛光机器人控制系统的整体以及硬软件系统的设计方案，它采用8751单片机、SA4828芯片和变频器进行控制，可以根据墙面的不均匀性来改变角磨机横向进给速度，实现了闭环控制。
The relationship between PID parameter and the root of the characteristic equation of the closed loop control system has been found out directly.
本文直接找出PID参数与闭环控制系统的特征方程的根之间的关系，只要使特征方程的根在z平面的单位圆内任意取值，然后再求出相应的PID参数，则闭环控制系统必然是稳定的。
The main content consists of the following aspects: The essential techniques of rate control are introduced, such as the principle of rate detection by quartz crystal﹑the relationship between filament emission current and filament temperature﹑the temperature dependence of material evaporation characteristic﹑the electron beam focalizing characteristic and the theory of rate closed-loop control.
主要内容包括以下几个方面：围绕电子束蒸发速率控制综合了速率控制的相关技术，比如蒸发速率石英晶振探测的原理﹑灯丝发射电流与灯丝温度的关系﹑膜料蒸发特性与蒸发温度的关系﹑电子束焦斑聚焦特性及速率闭环控制的原理。
Abstract; The desired attenuation ratio of a closed loop system can be obtained through tuning the PID controler场using atenuated frequency characteristic. However, it is difficult to determine the optimum tuning parameters due to the obtained solutions of tuning parameters are uncertain.
用衰减频率特性法整定PID控制器可使闭环系统获得要求的衰减比，但是求得的整定参数的解是不确定的，因而难以确定最佳整定参数。
The characteristic in the field of A/F closed loop control is discussed, and the conception of primary spark advance angle set is introduced.
讨论了A/F闭环控制区域的特点，提出了初选点火提前角集合的概念。
In closed-loop control system, all the components of the SPM system are assembled to form a voltage-amplitude feedback loop, and then improve the control program to fit the characteristic of this feedback.
在反馈控制方面，搭接系统各部分使之形成电压振幅反馈型控制回路，并为适合这一反馈特征改进了已有控制程序。
Cycle economy is an industry revolution from market-driving product industry to ecological rule green industry. And it is an ecological economy with the characteristic of closed loop flow.
循环经济是以市场驱动为主导的产品工业向以生态规律为准则的绿色工业转变的一次产业革命，是以物质闭环流动为特征的生态经济。
For the inverted pendulum system with multi-variable and nonlinear characteristic, a double closed-loop cascade fuzzy control approach was put forward based on Takagi-Sugeno fuzzy model.
针对具有多变量、非线性特性的倒立摆系统，提出了一种基于T-S模型的双闭环串级模糊控制方法。
Analyzes from in the typical closed-loop control system control algorithm, the analogous circuit realizes the complex control algorithm with difficulty, based on the numerical control system merit, has constructed based on the DSP numerical control system, and narrated the control function, the system characteristic and the system design which the numerical control system constitution, can realize.
从典型闭环控制系统的控制算法上分析，模拟电路难以实现复杂的控制算法，本文基于数字控制系统的优点，构建了基于DSP的数字控制系统，并叙述了数字控制系统的构成、所能实现的控制功能、系统特点和系统的设计。
Based on the Hamiltonian system's theory, the relationship between closed-loop poles of system characteristic equation and weighting matrices was thoroughly investigated.
根据哈密尔顿系统理论，深入研究了系统特征方程的闭环极点和加权矩阵的关系，给出了希望加权矩阵的确定方法。
In selection of loop structure there is a need to take characteristic of the materials into consideration for size of the magnetic body, additionally, the magnetic body should be closed to the processing clearance as much as possible.
指出在选择磁路结构时，需结合磁铁材料性能来考虑磁体尺寸，并使磁体尽量靠近加工间隙。
Study on the Static and Dynamic Characteristic of Hot Press Closed-loop Position Control System
热压机闭环位置控制系统的静动态特性分析
Then the current-command of each phase is reversed by the torque-angle characteristic, the current is controlled by the closed loop that consists of the regulator of hysteresis cycle.
其次通过矩角特性反演出各相电流指令，然后，通过滞环电流闭环控制电机；
Use closed-loop subspace identification method to overcome the unstable characteristic of small-scale rotorcraft system.
针对小型无人旋翼机系统不稳定的特点，将闭环子空间引入子空间辨识方法。