第二步即设计切换控制律，保证到达条件和滑动条件。
The second step is to determine a switched control law to guarantee the reaching and sliding condition.
以变速趋近律为到达条件，可产生扇形切换区，并可期待原点的稳定性。
The special feature of variable rate reaching law is that it is directly proportional to the norm of state vector and can result in a sector-shaped switching region.
提出了一种等式到达条件下的离散变结构组合控制策略，设计了基于该控制策略的负载频率控制器。
A discrete variable structure composite control strategy which use an equality form of the reaching condition is proposed and applied to design the load_frequency controller.
对多输入离散变结构控制进行了研究，提出了等式到达条件下的多输入组合控制策略，这种控制策略的数学形式简单，易于实现。
In this paper, the multi input discrete variable structure control is studied. A combined control strategy which USES an equality form of the reaching condition is proposed in multi input systems.
同时，在离散的情况下，滑动模态的性质、存在条件及其到达条件都己经改变，因此研究离散系统变结构控制方法对降低抖振具有重要的理论价值和实际意义。
The state trajectory of system is chattering, which restrict it's actual applications. In the circumstances, the arrival condition and the existence condition have been changed .
尽管条件很差，人们还是花了好几个世纪的时间尝试到达北极。
Although conditions were very poor, people tried for many centuries to reach the North Pole.
但是实际的用户到达率往往是集群化且不规则的，所以在投入生产环境之前需要对这些条件进行测试。
But real user arrival rates tend to be clustered and irregular, so you need to test for those conditions before the environment goes into production.
而这样的条件也使得他的搜救队能够迅速到达目的地，幸存者可以得到良好的医疗救助。
This has ensured that search and rescue teams can reach their destinations quickly, and that survivors will receive prompt medical attention.
飞行员在黑暗条件下飞行并到达模拟环境，在海豹队员用速降绳降落的时候飞机处于悬停状态。
The pilots flew in the dark arrived at the simulated compound and settled into a hover while the SEALs fast-roped down.
例如，程序员可能会在程序中包含断言，使您永远也不会到达switch语句中的default条件。
For example, a programmer might include the assertion that you should never reach the default condition in a switch statement.
交互块描述在某些条件或筛选器得到满足时，由于事件到达BusinessEvents中而触发的操作。
An interaction block describes the action that will be triggered by the arrival of an event in Business Events when some conditions, or Filters, are satisfied.
同样，您可能希望向if块中的else条件添加断言，这里已经设置了该条件，或者向switch语句中的缺省情况中添加断言，使缺省情况永远不可能到达。
Likewise, you might want to add assertions to else conditions in if blocks, where conditions are assumed, or to default cases of a switch statement, which should never be reached.
此时，while条件循环，直到达到退出条件—理想情况下是捕获成功完成。
At this point, the while condition loops until an exit condition is reached — ideally, when the capture has completed successfully.
不过，我们可以断言，如果程序不能达到第一个基线条件，那么当它到达列表末尾时至少能达到第二个基线条件。
However, we can be certain that if the program doesn't hit the first base case it will at least hit the second one when it gets to the end of the list.
在我们的例子中，这个命令将会永远运行下去，直到达到我们在下一个元件中所指定的条件为止——即触摸感知器按钮被按下。
In the example, this command will run forever, or until a condition is met as specified by the next block in our program that waits for the touch sensor's button press.
随着美国的不断扩张和白人不断向西部迁移，对良好的交通条件的需求越来越强烈，他们希望能够修建从大西洋横贯整个大陆到达太平洋的铁路。
As America grew and white settlers moved west, many felt a great need for good transportation. They wanted railroads that reached across the continent from the Atlantic Ocean to the Pacific Ocean.
到达最后阶段可不仅仅凭运气或无条件妥协。
Reaching the final stage of love isn't just about luck or unconditional acceptance.
直到我们真的离开了地球，到达了大气层，然后回过头来看它，我们因为有限的条件是不能理解我们的星球的。
It wasn't until we really left Earth, got above the atmosphere and had seen the horizon bend back on itself that we could understand our planet as a limited condition.
他们到达的头几年，条件是非常艰苦的，寒冷的气候和病虫害毁坏了他们的庄稼。
The first few years were difficult. Cold weather and insects destroyed their crops.
从业务过程或者业务模型开始着手，然后将之递归地分解成子过程或子模型，直到达到某些条件，再继续分解就会违反这些条件为止。
Starting from the business-process or a business model and decomposing that into sub-processes or sub-models recursively until some condition is met by which it can't be decomposed any further.
根据Zillow的高级经济师SvenjaGudell，在现在的条件下，美国的房价中位数将会下降另一个3%到5%，并且在2011还不能到达底部。
According to Zillow Senior Economist Svenja Gudell, under current conditions the median U.S. home value will likely fall another 3 percent to 5 percent and not reach trough until 2012 at the earliest.
这些先前存在的条件赋予该地块特征，并且还有一个后院，从沙滩到达这里，这似乎是一个理想的居住之处。
These preexisting conditions characterized the site as a contained backyard, which appeared to be an ideal situation to take distance from the life of the beach.
在良好的光收集条件下，约30%的荧光量子可以到达光阴极。
With good light collection, about 30 % of the luminescence quanta may reach the photocathode.
黑色物体在恒温条件下是温度的完全辐射器，因为到达和离开该物体的辐射量必须保持平衡。
A black body maintained at a constant temperature is a full radiator at that temperature because the radiation reaching and leaving it must be in equilibrium.
一些地区是要求有一定的天气条件才能到达的。比如当湖水冻结了，您才能到达湖的另一边。
Some areas will require certain weather conditions to be available. Such as a frozen lake to get to the other side.
性能测试可以和容量测试以及压力测试并行地完成，这是因为你想在所有的载入条件下都到达性能指标。
Performance testing can be accomplished in parallel with Volume and stress testing because you want to assess performance under all load conditions.
不具备条件也应想办法控制、限制嫌疑人等待警方到达。
If notpossible, try to control and limit suspects to wait for police.
对于机械存在的重大问题，我们将分派专业的技术员，再根据路程等条件下以最快的速度到达客户所在地为客户解决机械问题。
For mechanical major problems exist, we will assign professional technicians, again based on road condition at full speed at the customer location for customers to solve mechanical problems.
从而，可以有效地到达改善城市环境条件，提高人们生活质量的的目的。
Thereby, can get to improvement city ambient condition effectively , improve people the quality of life purpose.
从而，可以有效地到达改善城市环境条件，提高人们生活质量的的目的。
Thereby, can get to improvement city ambient condition effectively , improve people the quality of life purpose.
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