New pixel driving circuit using self‐discharging compensation method for high‐resolution OLED micro displays on a silicon backplane

A new 4T2C pixel circuit formed on a silicon substrate is proposed to realize a high‐resolution 7.8‐μm pixel pitch AMOLED microdisplay. In order to achieve high luminance uniformity, the pixel circuit compensates its Vth variation of the MOSFET for the driving transistor internally by using self‐discharging method. Also presented are 0.5‐in Quad‐VGA and 1.25‐in wide Quad‐XGA microdisplays with the proposed pixel circuit.     

基于通用分组无线业务短信控制的LED点阵屏设计

为满足中小商家的使用需求,给出了一种低成本、内容更新便捷的远程控制点阵LED文字显示屏的方案。该系统采用单片机(MCU)作为系统处理核心,采用 GPRS/GSM通信标准,通过显示屏上通用分组无线业务(GPRS)模块接收手机发送的控制命令及显示数据,经处理后控制LED显示屏的扫描显示,实现点阵屏远程更新显示内容。经一段时间的使用,系统运行稳定可靠,基本达到设计要求。     

一种用于转炉炉口微压差控制的混合控制策略

针对转炉炉口微差压控制系统的时变性、强干扰性及大时滞等非线性特征,本文提出了一种混合模糊推理与改进S m i t h预估补偿的控制策略。采用模糊推理,根据实际专家经验对微压差控制系统进行非线性控制,以提高系统的鲁棒性。提出了一种新型高阶Smith预估控制器,以补偿控制系统的时滞性,丰富系统的动力学特征。数值仿真表明,与传统模糊控制相比,本文提出的控制策略具有响应快、无超调的优点。工程实践效果表明,本文提出的转炉炉口微压差控制策略是有效可行的,达到了很好的烟气减排和煤气回收效果。     

Vehicle Teleoperation Interfaces

Despite advances in autonomy, there will always be a need for human involvement in vehicle teleoperation. In particular, tasks such as exploration, reconnaissance and surveillance will continue to require human supervision, if not guidance and direct control. Thus, it is critical that the operator interface be as efficient and as capable as possible. In this paper, we provide an overview of vehicle teleoperation and present a summary of interfaces currently in use.     

钴基非晶丝应力电阻抗效应

研究了钴基非晶丝材料显示的应力电阻抗 (SI)效应。结果表明 ,淬态钴基非晶丝在其两端受到外加轴向压力作用下可呈现显著的应力电阻抗效应 ,它与驱动电流频率及幅值均有关     

“妙手”系统机械结构设计与优化

为了辅助医生更好地完成显微外科手术,开发了一种主从异构的显微外科手术机器人系统——“妙手”系统．“妙手”系统的主手为商业化的Phantom Desktop主手,从手为针对显微外科血管缝合而设计的“妙手”从手．从手包括位置机构和姿态机构．位置机构通过丝传动实现双四连杆机构的运动特性;姿态机构采用三轴交汇于一点的设计思想．通过分析双四连杆机构的运动特性,根据Angeles运动灵活度指标对双四连杆机构进行了优化．结果表明：当双四连杆机构前三级杆等长且I级杆与III级杆垂直时,机构运动灵活度取最大值．     

基于MSP430的酒驾报警减速器的研制

以MSP430为核心控制器,利用测速器、FPGA、减速器、声光报警模块和LCD1602液晶显示器,设计了一款防止酒后驾车的汽车报警减速器,实现对车速的控制和平稳停车。对数据采集过程中对数据的处理方法以及控制汽车停车控制算法作了详细阐述,整个系统经调试,能运行正常。     

Modeling and experimentation of a passive low frequency nanoforce sensor based on diamagnetic levitation

This paper is focused on the study of a new low frequency micro and nanoforce sensor based on diamagnetic levitation. The force sensitive part is a 10-cm long macroscopic capillary tube used as a levitating seismic mass. This tube presents a naturally stable equilibrium state with six degrees of freedom thanks to the combination of diamagnetic repulsive and magnetic attractive forces. It is only used as a one-direction force sensing device along its longitudinal axis. This force sensor is passive. The force measurement is based on the displacement of the capillary tube and in steady-state this displacement is proportional to the force. This sensor is characterized by an under-damped second-order linear force-displacement dynamic which remains linear on several hundred micrometers and can thus measure a wide range of microforces. Because of the magnetic springs configuration used, the capillary tube presents a horizontal mechanical stiffness that can be adjusted between 0.01 and 0.03 N/m (similar to the stiffness of a thin AFM cantilever). The measurement range typically varies between ±50 μN. Bandwidth is 4 Hz. The resolution depends on the sensor used to measure the capillary tube displacement and on noises induced by environmental conditions (ground and air vibrations). The resolution typically reached with a STIL confocal chromatic sensor is 5 nN inside a test chamber located on a anti-vibration table. This study is illustrated by a pull-off force measurement.     

Age-related difference in perceptual responses and interface pressure requirements for driver seat design

Due to typical physiological changes with age, older individuals are likely to have different perceptual responses to and different needs for driver–seat interface design. To assess this, a study was conducted in which a total of 22 younger and older participants completed six short-term driving sessions. Three subjective ratings (comfort, discomfort and overall) were obtained, along with 36 driver–seat interface pressure measures, and were used to assess differences and similarities between the two age groups. For both age groups, localised comfort ratings were more effective at distinguishing between driver seats and workspaces. Older individuals appeared to be less sensitive to discomfort than younger individuals. Across age groups, two distinct processes were used in determining whole-body comfort and discomfort perceptions based on localised comfort/discomfort perceptions. Whole-body discomfort levels were largely affected by lower back discomfort in the younger group versus upper back discomfort in the older group. Four specific pressure measures at several body regions differed between the age groups, suggesting distinct contract pressure requirements and loading patterns among these groups.     

驾驶模拟系统人机界面的真实性评价

驾驶模拟系统是进行各项交通研究的有效手段和工具.详细描述了基于驾驶模拟器和Quest3D自行开发的驾驶模拟系统体系结构,着重介绍了其视觉呈现、听觉混成、体感模拟等模块组成的人机界面的设计,并采用综合分析法对系统人机界面的真实性进行了综合评价.结果表明,本文实现的驾驶模拟系统所建立的虚拟驾驶环境符合真实环境,其真实性能满足相关研究的需求.