难以控制

Time-delay problem was hard to be avoided in many occasions of industrial process control and network transportation. It was a severe disadvantage for control performance especially in input aslant systems.

时延问题在工业过程控制以及网络传输中难以避免，严重影响控制效果，尤其对于输入信号变化较大的控制过程，危害更加严重。

It simulates the human thought and the decision-making process, and solves the control difficult problem of complex system that describing is very difficult with the precise mathematical model (differential or difference equation).

基于知识驱动的拟人智能控制系统，是一种模拟人类思维和决策过程，解决难以用精确的数学模型来描述的复杂系统的控制难题的一种全新的控制系统。

The study on laser bending-forming is still in starting phase, so the parameters of laser bending-forming (include laser parameter 、 sheet parameter、 property of material etc.) still can't be controlled accurately. It is also a technique difficulty of laser bending-forming and the important impedimental factors to development of the technique that the inscrutability of forming results and the difficulty to select process parameters.

激光弯曲成形的研究还处于起步阶段，关于激光弯曲成形的参数(包括激光参数、板材参数、材料性能等)还没有达到精确控制的程度，同时成形结果难以预测和加工参数难以选定也是激光弯曲成形技术的一个难点，也是阻碍这一技术向前发展的重要因素。

In lingual orthodontics, the applying of intrusion force was less useful than the well control of the M/F ratio to control the torque of upper incisors. If the crown of the incisor had been inclined lingually, it would be very difficult to recover the torque.

3舌侧正畸中，首要的是控制好M/F值，否则即使加大垂直压低力也难以抵抗冠唇向转矩的不足；而且一旦产生舌倾趋势，将比唇侧正畸更难以恢复。

Paper, fuzzy control system of dosing.

由于化学加药控制系统的非线性、大时滞、时变的特点，常规的控制方法难以获得满意的控制效果。

Meanwhile, some weaknesses of neural network and fuzzy system can be made up, such as defining structure of network, giving initial weights, improving leafing speed, decreasing the dependence of fuzzy system on experience and so forth.

另一方面，作为智能控制的一个重要分支，模糊控制充分利用人的思维活动特点，用于实现难以建立精确数学模型的复杂对象的控制，已经获得了相当多的成功，并显示了其巨大的优越性。

But the capability obviously overmatched the integral separating PID and general Fuzzy control with intelligent weight function.

采用常规的模糊控制方法又难以找出合适的隶属函数和模糊控制规则，来针对特定的对象实施有效的控制。

To the AC driving winding system by some resistants in serial, phenomenon of mechanical-electrical couple is studied, and shock and serious vibration of the system can't be avoided, whether it be controlled through torque or time.

对多段电阻串联控制的交流拖动提升系统，研究了提升机启动过程提升系统的机电耦合问题，发现不论采用力矩控制或还是时间控制，系统的冲击现象均较严重，剧烈振动难以避免。

The parameters of a car-engine were discreteness; nonlinear and uncertain characteristics, so a general average control model could not control accurately the excess air coefficient and the spark advance angle in dynamic procedure. A self-optimizing fuzzy control with an immune correction coefficient was proposed.

针对发动机参数具有离散性、非线性和不确定性，采用常规的平均值控制模型难以精确控制瞬态过程的过量空气系数和点火时刻的问题，提出了一种带免疫修正因子的自寻优模糊控制。

With the financial supervision departments to strengthen supervision of commercial banks and commercial banks to the deepening of its reform, China's commercial banks to gradually improve the internal control, or commercial banks, however some problems, such as the internal control system it is difficult to adapt to business development; Weak internal audit; Perfect risk control system; Loans "Richard III" in the implementation of the system to be further strengthened and so on.

随着金融监管部门对商业银行监管的强化以及商业银行自身改革的深入，我国商业银行内部控制逐渐完善，然而我国商业银行还是存在的一些问题，如内部控制制度难以适应业务的发展；内部审计乏力；风险控制系统不完善；贷款&三查&制度在执行上有待进一步加强等等。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。