查询词典 disturbances

This paper deals with the problem of robust output feedback control for affine nonlinear systems with bounded disturbances.

研究带有界扰动的仿射非线性系统的鲁棒输出反馈控制问题。

The reasons which result in language disturbances of autistic children are probably as following: brain injury or brain agenesis, lack of meta-representation, difference from common life experience, and lack of internal device for learning language.

造成自闭症儿童语言障碍的原因可能有以下几个方面：脑损伤或脑发育不全、元表征的缺失、异于常人的生活经验以及缺乏学习语言的内部装置。

But in fact, the system of half-tracked air-cushion vehicle is over complicated. When the vehicle drives in an unknown soil, the parameters and structures of controlled member will change with load or disturbances. This system is nonlinear and time-variant, and it is very difficult to analyze its transfer function and state function quantitatively.

然而在实际工作中，由于本课题中的系统过于复杂，当行驶在未知土壤条件下时，被控对象往往随着载荷或干扰因素影响，其特性参数或结构发生改变，属于非线性和时变性的不确定系统，它的传递函数或状态方程难于用传统的定量分析方法加以实现。

In order to prove the reliability, test studies have been primarily carried out in the indoor soil bin. The data of the vehicle driving state parameters under the same or different terrain are analyzed. The process curves are compared by different control schemes. The theoretical model of the optimum driving state is reliable and fuzzy control scheme is feasible. The disturbances and unknown factors of control system are analyzed. Test results prove that the half-tracked air-cushion vehicle can drive steadily under control of the computer. At the same time the sensors used to measure soil mechanics characteristics on line need to be developed. And it is the important problem to be solved in the future study. The necessary regulation and correction are put up. So the studies in this paper provide some instruction for the further research work.

为了验证本文提出的最佳工作状态及最佳垫压理论，并分析控制系统的可靠性和稳定性，本文在半履带式气垫车的模型车上，在室内土槽中进行了初步的实车性能和理论验证试验，考察了在同种和不同土壤条件下气垫车的行驶状态参数的测量数据，比较了采用不同控制方法下的过程曲线，验证了最佳工作状态的理论模型和模糊控制系统方案的可行性与可靠性，从而保证了采用自整定模糊PID控制器能够使半履带式气垫车在稳定行驶最佳工作状态下；同时通过试验研究，分析了系统中各干扰与未知因素，对控制方案进行了相应的调整和修正，为今后进一步的研究工作提供了一定的指导。

Up to now, the performance index is almost described as an algebraic function of manipulating variables, it implies the response of performance index to the manipulating variables is instantaneous or the system is in steady state, and the effects of disturbances on the objective function are not taken into consideration.

在以往的工作中，大都把过程的调优变量与目标函数之间的关系用代数方程描述，这意味着目标函数对调优变量的响应是瞬时的，或假定过程处于静态，而且一般也不考虑过程中其它干扰对目标函数的影响，即在算法结构中，调优变量与目标函数构成唯一的因果关系。

Other cognitive functions are usually relatively well preserved and amnesic defects are out of proportion to other disturbances.

其他认知功能有时尚能保存的不错，惟记忆缺失的症状比其他障碍严重的多。

Initial growths of disturbances are measured by means of hot-wire anemometry. Due to the detected signals with low signal to noise ratio, the coherence function is used to eliminate background noise during data reduction.

在扰动增长的初始阶段，信号的信噪比非常地低，根据相关谱分析方法，应用相干函数，将扰动信号有效地提取出来，测量了初始扰动的增长。

The power system forced oscillation introduced by anharmonic periodic disturbances is then discussed. The effect of complicated pressure pulsation, ballistic pressure pulsation and quasiperiodic pressure pulsation on the stability of power system based on a single machine infinite bus power system and multi-machine power system are analyzed respectively through simulation.

从理论上探讨非简谐周期性扰动下的电力系统强迫振荡，并通过时域仿真分析单机无穷大系统和多机系统中汽轮机复杂压力脉动、准周期压力脉动及冲击性压力脉动对电力系统稳定性的影响。

Disturbances of the sense of smell are frequent.It is estimated to be 19.1%(hyposmia 13.3%,anosmia 5.8%) in adults aged 20 years and older,and 24.5%in adults aged 53 years and older.

在生活中，嗅觉障碍并不少见，有数据显示20岁以上的中青年中19.1%存在嗅觉障碍，其中嗅觉功能减退者占13.3%，嗅觉完全丧失者占5.8%，而在53岁以上的中老年人当中存在嗅觉障碍的人数比例已高达24.5%。

Frankly, the recent disturbances and the counter-revolutionary rebellion that took place in Beijing were fanned by international anti-communism and anti-socialism.

坦率地说，北京不久前发生的动乱和反革命暴乱，首先是由国际上反共反社会主义的思潮煽动起来的。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。