查询词典 cushion

So in this paper based on the characteristics and the optimum state theory of the vehicle, some kinds of control schemes are compared and discussed, and the fuzzy PID control scheme is adopted at last. The relation between air-cushion pressure and fan rotational speed on the optimum driving state is studied. The cushion pressure is used as controlled variable and the fan revolution is used as regulated variable. And transducer and fan motor are actuators.Based on the structure and operating properties of half-tracked air-cushion vehicle, the control system scheme and structure are presented. A control scheme using the self-tuning PID fuzzy logical controller is adopted. Fuzzy rules are set up and some researches have been done for fuzzy tuning method. At the same time the real-time measurement scheme by computer control is proposed, and electric circuits are designed. In the control system of half-tracked air-cushion vehicle cushion pressure P〓 is used as controlled variable and the fan speed n〓 as regulated variable.

因此本文以半履带式气垫车的特性和最佳工作状态理论为指导，通过对各种控制方法的比较与探讨，提出采用模糊PID控制方案，并且研究了在最佳工作状态下垫压及风机转速的关系，提出气垫压力作为控制参数，变频器和风机电机为执行机构，风机转速为调节量；主要进行了自整定模糊PID控制器的设计，研究了自整定PID模糊控制器的实现方法，编制了模糊控制规则，制定了模糊控制参数查询表，并分析了影响自整定模糊控制器相关的影响因素，确定了模糊控制表；为了实现半履带式气垫车的自动控制，还提出了计算机模糊控制系统的原理与结构，设计了相应的测量电路与控制软件。

A cushion is a kind of object to sit on, or to put behind one's back when sitting on a chair. It is filled with feathers or other soft materials.

Cushion 定义为一种内含羽毛或其它柔软东西的物体，用来坐靠，所以含义应该是"坐垫"。

Based on Three Gorges Project, the following aspects about the three typical embedding manners are studied:(1) The border condition of cyclic symmetry is applied to the finite element models with contact among cushion layer, penstock and concrete. The effects of elastic modulus, thickness and placement extent of cushion layer on the stress of its around concrete are analyzed. It is suggested that the ratio of thickness to elastic modulus can be used as an important parameter in the design of cushion layer.

因此，本文结合三峡工程建设实践，在收集和总结前人经验的基础上，以大型通用有限元分析软件ANSYS为平台，对不同埋设方式的巨型蜗壳结构进行以下几个方面的研究：(1)引入循环对称边界条件，考虑垫层-钢板-混凝土之间的接触摩擦，建立有限元模型；并对垫层敷设范围、垫层厚度和弹性模量等设计关键参数进行了优化，并把"垫层弹性模量与垫层厚度之比"作为参考指标进行设计。

Under determining cushion thickness more than failure face depth, determining cushion thickness less than failure face depth and the space between pile is small etc, the calculation equation of proper determining cushion is got.

从垫层厚度大于破坏面深度、垫层厚度小于破坏面深度和当桩间距较小时等几种情况下，推导出最佳合理垫层计算公式。

Common-and air-cushion type comparison: when it comes to air cushion layer, air cushion layer is in a State of managers'change granula, it is made of synthetic elastomer and is indicated by a particle, microparticulate, interlamination of air compression layer by air cushion rubber compounds bubble and decided that blanket surface treatment is divided into three, the first coated paper: use sulfuration to form the process of polishing.

普通型与气垫型对比：谈到气垫层，气垫层是处于封闭式颗粒之状态，它由合成弹性体和微粒组成，微粒内含空气，层间的压缩性由气垫层气泡和橡胶化合物决定，橡皮布表面处理分为三种，第一种涂铸：使用硫化纸张形成表面抛光的过程。

The research results of the above have preferably solved the hot point problems discussed and studied in the process of the calculation of water diversion system unsteady flow of air cushion surge chamber, offer theoretical basis to accuracy calculation and reasonable design of air cushion surge chamber, and are helpful to make air cushion surge chamber more popularized in our country.

上述几方面内容的创新点就在于，实现了对气垫式调压室过渡过程的全面系统的研究，较好地解决了设有气垫式调压室的引水系统非恒定流计算过程中一直处于讨论、研究阶段的热点问题，为准确计算、合理设计气垫式调压室提供了理论依据，对加速推广气垫式调压室在我国的应用有很大帮助。

Air cushion surge chamber can also be named pneumatic surge chamber. The first air cushion surge chamber in the world was built in Driva water power plant in Norway in 1973. In our country, the proper application and research on the subject of air cushion surge chamber started at the end of last century or the beginning of this country.

气垫式调压室又称气压式调压室，世界上第一座气垫式调压室是在挪威的Driva水电站建成于1973年，在我国，真正意义上的气垫式调压室应用和研究工作起始于上世纪末，本世纪初。

Scope of business; Carpet, tapestry, car cushion, sofa cushion and woolens cushion.

经营范围：地毯、挂毯、车垫、沙发垫、羊毛毡垫。

In order to understand the formational mechanisms of water cushion flow fields of water cushion belt conveyor,the numerical simulations on water cushion flow fields were carried out.

为进一步了解水垫带式输送机水垫流体场的形成机理，对水垫流体场进行了数值仿真研究。

On the basis of destroying mechanism of good cushion, a new kind of high-speed pneumatic cylinder with self-adjusting cushion for supply pressure fluctuation is designed, which use relief cushion valve and feed supply pressure back cushion valve.

当供气压力在一定范围波动时，溢流阀开启压力也同时按照一定规律自动改变，使缓冲腔吸收能量与冲击能量保持平衡，实现了无需人工调整，缓冲性能自动保持良好。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。