具有迟滞模拟记忆功能的奥迪盘式制动器可变线性模型

本文以奥迪１００盘式制动器为研究对象，建立了一种可模拟制动压力－力矩响应迟清点特性的可变线性模型，首先，介绍在ＪＦ－１３２型汽车制动器试验台上进行防抱制动器模拟试验的方法，其次，在获得大量试验数据的基础上，运用曲线拟合和优化技术，建立制动压力－力矩关系的线性模型，心滞模型为线笥模型，最后，在相同制动压力输入的前提下，把模型的理论计算民试验结果进行对比分析了模型的有效性和精确性。     

汽车防抱死制动系统轮速传感器信号处理

本文研究了汽车防抱死制动系统轮速传感器信号的处理问题。在对变磁阻激励式轮速传感器的工作特性进行试验研究的基础上，提出了对轮速传感器信号处理电路的要求，设计出了由两级迟滞比较器＋低通滤波构成的信号处理电路。对电路进行了仿真和试验研究。研究结构显示，这种轮速信号处理电路工作可靠、抗干扰能力强。在较低车速下（〈３ｋｍ／ｈ）仍能准确地测量车速。     

盘式制动器制动尖叫计算模型的建立

借助于有限元和模态综合技术，建立了盘式制动器制动尖叫的摩擦耦合模型。通过复特征分析，得到了对应于每阶段动模态的阻尼与频率，模态阻尼值揭示了哪 些模态不稳定并有可能产生尖叫；最后运用耦合模型研究了摩擦系数和子结构模态对制动尖叫的影响。     

利用物理模型研究热扩散问题

山东威海华能电厂循环冷却水正态物理模型试验的目的是研究电厂设备冷却水排入海中后对海域及取水口的热污染问题,本文剖析了试验过程,内容包括电厂附近海域的自然条件分析、热扩散理论在模型中的应用、模型设计思想、试验设备量测系统与试验方法以及模型试验中需要探讨的问题。     

Global cutting-path optimization considering the minimum heat effect with microgenetic algorithms

This article considers microgenetic algorithms (GAs), which explore in a small population with a few genetic operators, for cutting-path optimization problems. The major difference between GAs and simple genetic algorithms (SGAs) is how to make a reproductive plan for an improved searching technique because of population choice. It is shown that GAs implementation reaches the near-optimal region much earlier than the SGAs approach, and the GAs give a better solution than simulated annealing (SA). The main objective was to determine what temperature distribution can be obtained from the solution of a travelling distributed heat source. The solution of the travelling heat source on nested raw plate provides information about the vertices of each nested part of the raw plate. From the fact that the initial temperature at a piercing point strongly depends on the heat flow which stems from the previous cutting contour, the temperature of all piercing points must be lower than the critical temperature after each cutting of the components of a part. The critical temperature is identified as the mechanical melting temperature of steels. A heuristic back-tracking method is introduced to find the near-optimum cutting path considering the minimum heat effect on deformation. The heuristic back-tracking method is incorporated with the GAs.     

A pseudofield model approach to simulate compartment-fire phenomena for marine fire safety design

In order to prevent the spread of marine compartment fires, it is necessary to understand the governing factors or characteristics of fire-spread phenomena. We present a pseudofield model approach to this problem. We first described a field model of turbulent heat convection based on a standard k – turbulence model. Two-dimensional numerical simulations of a two-linked compartment fire were carried out in order to predict the turbulent convection flow induced by the heat released from the fire. Then a more complicated fire-spread problem of multilinked compartment fires was analyzed by means of a zone model, in which the amounts of oxygen consumption and gas generation were solved by a gas-balance equations system. The effect of threshold conditions on fire propagation and the effect of the thickness of the heat insulation were investigated with numerical simulations.     

水火弯板建模系统研究

以逐步回归分析和改进的Ｂ－Ｐ神经网络两种方法为算法,基于Ｍｉｃｒｏｓｏｆｔ Ｖｉｓｕａｌ Ｂａｓｉｃ３．０软件平台,应用实船板样本数据,开发了水火弯板局部收缩量的建模系统。     

Technical Note: Force Control in Electrohydraulic Active Suspensions Revisited

The inner loop control for the actuator force can be quite simply compensated by means of a correction term to the desired force signal at the input. The correction requires only a measurement of the actuator piston velocity and is employed to cancel the loop disturbance caused by the oil flow to the actuator. Although an additional time constant is introduced by the integration in the inner loop force control, the overall performance is nevertheless quite close to that of an ideal optimal system.     

浅谈鼓式后制动系统防抱死方案的设计

通过鼓式后制动系统数学模型分析，对该系统进行了正向设计及6种不同状态的全过程验算，最终确认后制动器在后减压缩过程中不会再出现自制动或抱死现象。运用该方案，成功对多款量产车型进行了重新设计和整改，取得了很好的市场效益，提高了摩托车行驶安全性和经济效益，并有效缩短了新产品的设计验证周期。     

天津海河隧道泡沫-水喷雾系统保温措施升级及改造

海河隧道泡沫-水喷雾系统在冬季寒冷条件下运行时，个别雨淋阀组出现局部结冰的现象，对隧道的安全运行造成一定影响。针对这一运营难题，通过现场实测温度及数据分析，对箱体保温进行散热量计算并实测加热功率，对隧道内不同部位的雨淋阀组制定不同的保温措施。得出如下结论： 1）寒冷地区隧道的泡沫-水喷雾系统雨淋阀组应考虑保温。 2）雨淋阀组的保温措施应结合实际情况，根据箱外温度，制定对应的保温措施。 3）洞口位置的雨淋阀组应设置电加热器保温。 4）设置电加热器的雨淋阀箱体，其热量损失与隧道内温度成反比；温度越低，散热量越大，能耗越大。