行驶平顺性

Based on mechanism and vehicle theories theoretical analysis is pursued and normal driving conditions are put forward. The relations are analyzed between load distribution and power consumption. Mechanical formula is proposed. Furthermore in this paper the theoretical model of the total power consumption is established, and the relations of the total minimized power consumption with the air-cushion pressure and the fan revolution are discussed. The optimum operation point is put forward. The dynamic digital simulation studies are carried out on the operating procedure of the half-track air-cushion vehicle on soft terrain. Mechanical parameters and soil mechanics characteristics affecting vehicle power consumption and riding performance are analyzed. At the same time according to the model formula, the automation control problem is discussed. It is a theoretical instruction for further automation control.

本文还从力学和车辆原理的角度进行了理论分析，推导了半履带式气垫车的需求功率及正常行驶条件，研究了气垫压力和功率消耗之间的关系，提出了力学模型公式；建立了半履带式气垫车总功率消耗的理论模型，研究了最小功率消耗时功率与垫压及表征气垫车行驶状态的各参数的关系，分析了相应的影响因素，并提出了最佳工作状态的定义；同时进行了半履带式气垫车在软地面的行驶过程的动态数字仿真试验研究工作，对影响车辆功率消耗和行驶平顺性的各力学参数和土壤参数进行了分析，得到了各运行状态参数的变化规律，验证了最佳工作状态和最佳垫压的理论，根据力学模型公式对进一步的自动控制问题进行了探讨，为系统的控制提供了理论指导。

A strategy based on optimal control theory is proposed and the damping force control model of the MR damper is suggested.

结果表明，磁流变阻尼器对于改善和提高汽车行驶平顺性是积极有效的，本文所提出的饱和最优控制方法也是可行的。

The control of vibration and noise is vital to environmental protection、the auto's flatness and endurance.

汽车振动、噪声控制关系到环境保护、汽车行驶平顺性和车辆的耐久性。

There are two basic characters, the libration is the main cause of effecting to the comforts.

乘坐舒适性和行驶平顺性是现代轿车的两项基本性能特点，振动是影响乘坐舒适性的主要因素。

Based on the vehicle ride comfort performances, analyzes the relationship between suspension system and vehicle ride comfort performances. Carrying on dynamics simulation to the different entire vehicle model under the different operating mode, analyzes each axial acceleration change curve in the post-processing module, the use curve processing function, the computation always weighting acceleration mean square value, analysis the influence of suspension system to ride comfort performances, and obtains the suspension system optimization plan.

基于整车行驶平顺性，从理论上分析悬架系统与整车平顺性的关系，然后对不同整车模型在不同的工况下进行动力学仿真，在后处理模块中分析各轴向的加速度变化曲线，利用曲线处理功能，计算总的加权加速度均方值，分析悬架系统对平顺性的影响，并在此基础上得出悬架系统选型的优化方案。

The simulation result shows that through active configuration, the robot′s driving placidity and anti-tip...

仿真结果表明，通过主动配置，机器人的行驶平顺性和抗倾覆性均得到明显提高，能更好地满足探月需求。

This paper has done the simulation analysis and appraisement of ride comfort of the vehicle with leaf spring and air suspension separately, the result showed that ride comfort of the vehicle with air suspension is better than the vehicle with leaf spring, and it has proved that it was feasible and senseful to match air suspension on oil-transporting vehicle.

本文分别对钢板弹簧和空气悬架两种悬架的整车行驶平顺性进行仿真分析与评价，结果表明空气悬架的整车行驶平顺性要优于钢板弹簧悬架，证明在该运油车上匹配空气悬架是可行并且有意义的。

Skyhook control, ON-OFF control which is based on skyhook control thought and fuzzy logic control have been studied and the time domain and frequency domain simulation programme was realized using Malab high-level language, Simulink and corresponding toolbox.

仿真结果表明Skyhook控制、ON-OFF控制和模糊逻辑控制方法都能在合理的轮胎动载荷和悬架动行程的前提下提高车辆的乘坐舒适性，其中Skyhook控制和模糊逻辑控制方法对车辆行驶平顺性的改善尤为显著。

Adaptive control of vehicle suspensions is one of the most important subjects in today's field of vehicle dynamics.

由于悬架系统的参数变化对车辆行驶平顺性有重要的影响，所以悬架参数的控制应特别重视。

Numerical simulation results demonstrate that active suspension with a proper control strategy can decrease the roll angle and roll angle acceleration of the truck cab, the active suspension can improve both the ride comfort and driving safety.

大量的仿真结果显示，主动控制悬置系统明显降低了驾驶室的俯仰角加速度和俯仰角，采用主动控制悬置系统可有效地改善卡车行驶平顺性和乘坐舒适性。

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。