查询词典 uncertain

The performance of magnetic levitation is determined mainly by the characteristic of its controller and solving the problems of the high precision, high response frequency, output immune from the disturbance, the parameter perturbation and the uncertain factors from outside is very difficult. The traditional methods can not meet the needs of the system. So it has great significance to study the control method of magnetic levitation.

磁悬浮系统性能的优劣很大程度上取决于控制器的特性，高精度、高响应频率和输出不受外界干扰的特性以及磁悬浮中参数的摄动和外界不确定的干扰因素都是难以解决的棘手问题，传统控制难以满足系统要求，因此对控制方法的研究有其非常重要的意义。

A kind of stability method is presented for a class of uncertain nonlinear system with perturbation and time delay.

针对一类有参数摄动和时延的非线性不确定性系统，提出了一种稳定性分析方法。

A new algorithm for linear array position calibration is presented. In the case of source direction-of-arrival is uncertain, by using the least square algorithm, the source DoA is estimated based on the unwrap phase of the steering vector.

针对独立校准信源波达角未知情况下的阵列位置误差校正问题，提出了一种对信号导向矢量的绝对相位进行最小二乘线性拟合，进而估计出阵元位置误差的算法。

Secondly, based on the piecewise continuous Lyapunov function andconstant Lyapunov function, the problems of robust guaranteed cost control forparametric uncertain sampled-data control systems are investigated by using the jumpsystem model and linear matrix inequality technique.

然后，针对参数不确定采样系统的鲁棒保性能控制问题，利用跳变模型和线性矩阵不等式技术，分别基于分段连续Lyapunov函数方法和定常Lyapunov函数方法研究了采样系统的鲁棒保性能控制器综合问题。

When Pisanio had provided her with her new apparel, he left her to uncertain fortune, being obliged to return to court.

毕萨尼奥不得不回到宫里去，所以他给她置办好新装以后，就让她一个人去碰运气了。

Based on grey system theory and fuzzy theory, uncertain decision making problems and several relative articles were studied, then points out the advantage and shortage of them when dealing with grey fuzzy set were pointed out.

以灰色系统理论和模糊数学为基础，探讨了不确定型决策问题的特性，分析了一些相关成果中所给方法在直接处理灰色模糊数方面的优势与不足。

Pre-baked aluminum electrolytic cell is a non-linear, multivariable and time-varying system, its model is uncertain. It is difficult to detect the alumina concentration, polar distance, temperature and mole ratio on-line, so we control pre-baked aluminum electrolytic cell by the method of intelligent control.

预焙铝电解槽是一种复杂的非线性、多变量时变系统，模型具有不确定性，浓度、极距、温度和分子比等参数在线检测困难。

The management of patients whose largest polyp is less than 10 mm is uncertain.

处理最大息肉小于10毫米的病人具有不确定性。

The aim of commercial prediction is to discover the law of development and future status of uncertain financial events and provide scientific gist for commercial decisions.

经济预测的目的在于探索不确定的经济事件的发展规律和未来状况，为经济决策提供科学依据。

The answer depends in part on the uncertain balance of power within the PRI.

答案部分取决于宪政革命党内权利的不均衡。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。