Simulation results show that, in the closed-loop system, precise attitude control is accomplished in spite of the uncertainties and external disturbances in the system.
仿真结果表明：即使系统存在不确定性和外界干扰，仍可在闭环系统中实现精确的姿态控制。
It is shown that the stability of the closed-loop system is guaranteed by analysis.
分析表明滑模控制器保证了闭环系统的稳定性。
The robust stability of the closed-loop system is proved, and its performance is analyzed.
文中分析了多变量非线性内模控制结构的鲁棒稳定性及动态性能。
The control strategy can guarantee the existence of sliding phase for the closed-loop system.
该控制策略保证了闭环系统滑动阶段的存在性。
By the proper choice of the controller parameters, the global stability of closed-loop system is guaranteed.
通过适当选择控制器参数，可以保证闭环系统是全局渐近稳定的。
The paper places emphasis on the closed-loop system of pressure based on BLDC motor and the correlative software.
文章重点阐述利用无刷直流电动机构建的井下压力闭环实验装置和以无刷直流电动机为控制核心的软件平台。
Using this virtual instrument, the frequency characteristics of both open-loop system and closed-loop system can be measured.
设计的虚拟仪器既适用于对开环系统又适用于对闭环系统的频率特性进行测试。
The closed-loop system is proved to be bounded-input and bounded-output stable when the multiple model adaptive controller is used.
可以证明多模型自适应控制器能够保证闭环系统是输入输出有界稳定的。
The adaptive compensation term of the approximation error is introduced to improve the control performance of the closed-loop system.
为改善控制系统的性能，引入逼近误差的自适应补偿项。
By Lyapunov candidate function method, this paper concludes that the closed-loop system is globally uniformly asymptotically stable at origin.
用李雅普·诺夫候选函数方法，得出了在该控制律作用下的闭环系统在原点具有全局一致渐近稳定性的结论。
By the limit probability theory, it is shown that the closed-loop system is almost surely uniformly stable, and the control law is asymptotically optimal.
利用概率极限理论，证明了闭环系统的几乎必然一致稳定性和控制律的渐近最优性。
Keeping the zeros and poles of the PID unchanged, an adaptive PID controller is presented using the proposed recursive algorithm in the closed-loop system.
在确保PID零极点不变的基础上，将开环递推整定算法引入到闭环系统中，提出了自适应pid控制算法。
This controller not only can make the closed-loop system quadratically stable but also can make the norm of the closed-loop system less than a given bound.
该控制器不但能使被控对象的闭环系统二次稳定，而且满足一定的范数界约束。
Based on the estimation of a controlled plant's transfer function model, a method for the self-tuning of PID controllers in closed-loop system is proposed.
基于对被控对象传递函数的估计，提出一种闭环pid参数整定方法。
It is proved that globally asymptotical stability and convergence of the resulting closed-loop system are guaranteed by the range of the prediction horizon.
从理论上证明了它可保证闭环系统的全局渐近稳定和收敛，并定量给出了预测水平的选择范围。
The frizzy logic control is used to estimate the unknown uncertainties, and guarantees the robustness of the closed-loop system in the reaching phase synchronously.
模糊逻辑控制用来估计系统未知的不确定性因素，并同时保证了闭环系统在变结构控制到达阶段的鲁棒性。
The controller is robust to the uncertainties of both the parameter and the state of the systems. It can also guarantee the global stability of the closed-loop system.
该控制器对系统的参数和状态的不确定性具有鲁棒性，并且能保证系统闭环全局稳定。
Using this extended quadratic optimization theorem, the necessary and sufficient condition for the existence of stable quadratic optimal closed-loop system is obtained.
利用这个推广的二次最优定理，得到了存在稳定的二次最优闭环系统的充要条件。
A real factorization method based on evolutionary algorithms is proposed for finding tbe roots of the characteristic equation of a linear time-invariant closed-loop system.
针对线性定常闭环系统特征方程的求根问题，提出了一种基于演化算法的实因式分解法。
Combined with the structural parameters of TAO649D traction motor, the mathematic model of the DC motor is built and its speed and current dual-closed-loop system is designed.
结合TAO649D机车牵引电机的结构参数，首先建立了该直流电机的数学模型，设计了该电机的转速，电流双闭环系统。
To solve the stability analysis problem arising from the integral term, we employ the singular perturbation theory to analyze the stability of the resulting closed-loop system.
闭环系统的稳定性证明采用了奇异扰动理论，以解决积分项的存在带来的稳定性分析问题。
With the application of mixed position closed-loop system in the high-speed precise laser sub-marker, the response has been increased greatly and constant error has been decreased.
将混合位置闭环系统应用于高速精密激光内雕机中，大大提高了系统的响应性，减少了系统的稳态误差。
The fuzzy adaptive controller designed based on this method can guarantees that the closed-loop system is globally stable and the tracking error converges to a neighborhood of zero.
在此基础上设计的模糊自适应控制器能够保证整个闭环系统稳定且跟踪误差收敛到零的一个邻域内。
By using this method, the closed-loop system not only keeps integrity but also is robust stable in given disk area for all admission parameter uncertainties when sensor faults occur.
该方法不仅使得系统在传感器发生故障时仍具有完整性，而且还使得闭环系统对于允许的参数不确定性在指定的圆盘区域内具有鲁棒稳定性。
The objective was to design derivative state feedback controllers so that the closed-loop system was regular, impulse-free, and the closed-loop poles was to be placed in a given region.
考虑连续广义系统的圆形区域极点配置问题，采用微分状态反馈的方法设计控制律使得闭环系统正则，无脉冲且闭环极点位于给定的圆形区域内。
The presented controller can ensure the global asymptotic stability of the closed-loop system, and attain the desired response performance by assigning the poles of the closed-loop system.
所提出的控制器既能保证闭环系统全局渐进稳定，又能通过对线性化系统闭环极点的配置来获得期望的闭环系统响应性能。
A delayed state feedback law is presented to stabilize the inertia wheel pendulum, which guarantees the closed-loop system to be globally asymptotically stable in the presence of time delays.
用一个时滞状态反馈控制律镇定惯性轮倒立摆，不仅保证闭环系统全局渐近稳定，还允许闭环系统承受一定的时滞。
By introducing nonlinear damping term, it is proved that all signals in the closed-loop system are globally stable, and the tracking error and the parameter (estimation) error converge to zero.
通过引入非线性阻尼项，保证了闭环系统的所有信号都是全局稳定的，而且跟踪误差及参数估计误差均收敛于零。
This paper gives out a simple and practical method of designing electrohydraulic servo system by using PID plus output feedback to make arbitrary configuration of pole-zero in closed-loop system.
本文给出了一种利用PID加输出反馈来任意配置闭环系统极点和零点的简单实用的电液伺服系统设计方法，仿真设计实例表明了该方法的有效性。
This paper gives out a simple and practical method of designing electrohydraulic servo system by using PID plus output feedback to make arbitrary configuration of pole-zero in closed-loop system.
本文给出了一种利用PID加输出反馈来任意配置闭环系统极点和零点的简单实用的电液伺服系统设计方法，仿真设计实例表明了该方法的有效性。
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