| 1. | Wave velocity characteristics of dynamo - relaxed rock mass at site of daliushu dam
大柳树坝址松动岩体波速特征研究 |
| 2. | It is the pure problems being designed for hydraulic operating mechanism that is discussed both in aspects of action time and velocity characteristics
从液压的动作时间和输出速度特性分析等方面探讨了液压操动机构在工程设计上的理论问题。 |
| 3. | The simulation result is about the output - velocity characteristic of the m otor proving that fuzzy - adjustable - pid control strategy is superior to traditional pid control strategy and the validity of the digital controller ' s calculation
通过仿真分析，得到了马达输出转速的动态响应，证明了模糊自整定pid控制效果要优于传统pid控制、数字控制器选用算法合理。 |
| 4. | In local model , the different kind of suspension girder ? i and rectangular beam make different field of velocity characteristic surrounding through two - dimensional velocity experiment . result display i has more influence to velocity around beam than rectangular beam
文章同时进一步采用选进的投影寻踪法对试验数据作了优化处理，使其结果更加可靠，更具实用价值，以供同类型工程设计时参考 |
| 5. | Based on the gps data , i analyzed the velocity track of swatch roads and concluded velocity characteristic curve of alignment of downgrade - followed curve , in addition put forward alignment range and conditions responding to velocity characteristic curve
根据gps实测数据，分析样本路段的速度轨迹曲线，总结出弯坡衔接线形的两种速度特征曲线，并指出了各速度特征曲线所对应的线形组合范围和适应的条件。 |
| 6. | These are correlation characteristic parameter , fourier spectrum characteristic parameter , power spectrum characteristic parameter , time domain amplitude characteristic parameter , linear prediction coding coefficients , instantaneous characteristic parameter , absorb and decay coefficient , velocity characteristic parameter and wavelet packet transform characteristic parameter . the parameters contain the surface relatively wide , the prediction which is suitable for the goal of many kinds of seism needs
分别为：自相关特征参数、付立叶谱特征参数、功率谱特征参数、时域振幅特征参数、线性预测编码系数、瞬时特征参数、吸收衰减系数、速度类特征参数和小波包变换特征参数，参数涵盖面较宽，适用于多种地质目标的预测需要。 |
| 7. | Second , engine ' s partial velocity characteristics model and universal characteristics model are built the throttle opening is considered as an essential factor to build the model for reflecting the actual working performance of engine . the situation of the throttle opening change is studied , and a simulation method is given to use torque curved surface and vehicle dynamics equation on base of differential approach method . engine test software is developed for the engine no - load test , variable throttle opening test and throttle step change test
其次，建立了发动机的部分速度特性模型和万有特性模型；为了更好的反映发动机的实际工作特性，将油门开度作为一个重要参数参与建模，并对发动机变油门的情况进行了研究；结合转矩曲面和整车动力学方程，采用微区间逼近法确定了发动机变油门过程仿真方法；开发了发动机试验测控软件，利用该软件进行了发动机空载响应试验、发动机不同油门开度试验和油门阶跃变化试验，并对实际试验数据和数学模型计算数据进行对比；在vc + +平台上开发了发动机特性仿真模块，在系统中用软件实现了变油门控制发动机特性的功能。 |
| 8. | For the research of the damping control strategy one type of controllable damper , magnetico - rheological ( mr ) damper , was constructed and tested , the damping force and displacement characteristic curves , the damping force and velocity characteristic curves are obtained , so that the damping force and voltage ( current ) model , or the damping coefficient and voltage ( current ) model can be further obtained
通过特性试验，得到示功特性、速度特性，经转换得到阻尼器的阻尼力? ?电压(电流)模型和阻尼系数? ?电压(电流)模型。这样在研究中，可以采用开环控制方式或力反馈控制方式实现阻尼力的控制。 |
| 9. | The paper summarizes the development of the control technology of paver ' s vehicle system ; discusses the feasibility of the plc application to vehicle system ; calculates and examines the working resistance and power of the control system as well some concerning parameters of the hydraulic system ; builds the driving system velocity characteristic ; accomplishes the hardware design and the software design according to the functional requirements of vehicle system and the features of plc ; adds the pid compensation to the closed circuit velocity control ; sums up the mathematic model of hydraulic pump - motor system and defines the controller parameters ; in the end , the simple dynamic simulation basing on the control system model and the simulative test are carried out to testify the reasonableness and the feasibility of the designed plc control system
本文总结了摊铺机行驶控制技术的发展，讨论了plc应用于行驶系统的可行性；计算和校验了控制系统工作阻力、功率及液压系统有关参数；建立了行驶驱动系统的速度特性；结合行驶系统的功能要求及plc的特点，完成了控制系统的硬件设计和软件设计；对其速度闭环控制，引入了pid校正环节；归纳了液压泵?马达系统的数学模型，确定了控制器的控制参数；最后对控制系统模型进行了简单的动态仿真和plc模拟试验，初步证实了控制系统设计的可行性和合理件。 |
| 10. | Through setting up high velocity oxygen / air fuel spray the numerical model of field sheds , carrying the numerical simulation to high velocity fuel spray velocity characteristic and temperature characteristic of particle , its result has announced high velocity oxygen / air fuel spray particle change laws of velocity and temperature
摘要通过建立多功能超音速火焰喷涂火焰流场的数值模型，对超音速火焰喷涂粒子的速度特性和温度特性进行数值模拟，其结果揭示了多功能超音速火焰喷涂粒子的速度和温度的变化规律。 |
