2006亚洲国际动力传动与控制技术展览会展后报告

2006年10月10日至13日，亚洲国际动力传动与控制技术展览会在中国最先进的展览场所上海新国际博览中心举办。本届展会规模再创新高。来自海内外的1218家展商在49160平方米的展区内全方位展示了他们最新的技术和设备，展商数和展出面积分别比去年增长21％和6％。德国、美国、英国、意大利、西班牙、法国、韩国和中国台湾等国家和地区的展团均以强大阵容参展，使观众们不出国门便能看到世界最先进的工业技术和设备。同时高质量的观众也确保了展会的高品质和专业性，并推动展会规模进一步扩大，四天的展会共吸引了来自全球74个国家和地区相关领域的38408名观众前来参观并洽谈业务。     

2005亚洲国际动力传动与控制技木展览会展后报告

2005年11月28日至12月1日，亚洲国际动力传动与控制技术展览会在中国最先进的展览场所上海新国际博览中心举办。本届展会规模再创新高。来自海内外的1011家展商在46580平方米的展区内展出了他们最新的技术和设备，展商和面积规模分别比去年增长36％和46％。德国、美国、英国、意大利、西班牙、法国、韩国和中国台湾等国家和地区的展团均以强大阵容参展。同时高质量的观众也确保了展会的高品质和专业性，并推动展会规模进一步扩大，4天的展会共吸引了来自全球70多个国家和地区相关领域的52908名观众前来参观并洽谈业务。     

2005亚洲国际动力传动与控制技术展览会展后报告

2005年11月28日至12月1日，亚洲国际动力传动与控制技术展览会在中国上海新国际博览中心举办。本届展会规模再创新高。来自海内外的1011家展商在46580m^2的展区内展出了他们最新的技术和设备，展商和面积规模分别比去年增长了36％和46％。德国、美国、英国、意大利、西班牙、法国、韩国、和中国台湾等国家和地区的展团均以强大阵容参展。同时高质量的观众也确保了展会的高品质和专业性，并推动展会规模进一步扩大，四天的展会共吸引了来自全球70多个国家和地区相关领域的52908名观众前来参观并洽谈业务。     

2006中国(北京)国际动力传动与自动化控制展览会--动力传动与自动化的盛宴

中国国际动力传动与自动化控制展览会（PTAC CHINA）,于2004年回归北京,展会将面向全国各界用户,力争为企业办事实,让企业获实效,全面打造贸易型,出口型品牌,是企业展示产品和技术,开拓贸易市场的理想平台。     

中国国际动力传动与自动化控制展览会圆满结束

中国国际动力传动与自动化控制展览会(PTAC CHINA 2008)于6月10～13日在北京中国国际展览中心成功举办,特别是展会期间有多场专业活动;中国基础件高峰论坛、齿轮行业发展论坛、现代传动节能研讨会、巴西采购洽谈会更是吸引了展商、国内外的企业学者参加,受到业内好评.     

动力 传动 控制 一个都不能少——打造PTC“链”条，让装备“动”起来！ 2007亚洲国际动力传动与控制技术展览会诚邀专业参观商

金秋送爽，10月的上海新国际博览中心，届时如约而至的会是广大专业观众熟悉的“亚洲国家动力传动与控制技术展览会”（简称亚洲动力传动展）这一著名的品牌展览。该展会由中国液压气动密封件工业协会、中国机械通用零部件工业协会、德国汉诺威展览公司、汉诺威展览（上海（有限公司等联合举办。     

2007亚洲国际动力传动与控制技术展览会云集众多著名厂商

亚洲国际动力传动与控制技术展览会（简称亚洲动力传动展）定于10月10日至13日在上海新国际博览中心举行。本次展会将吸引1500家展商，展出面积达70000m^2，德、意、美、英、法、西班牙、韩国和中国台湾等组团参加。[第一段]     

动力、传动、控制，一个都不能少——PTCASIA2007预报

2007年10月的上海新国际博览中心，如约而至的是亚洲国际动力传动与控制技术展览会（简PTCASIA）这一著名的品牌展览。本次展会将吸引1500家展商、展出面积达70000m。，德国、意大利、美国、英国、法国、西班牙、韩国和中国台湾等多个国家和地区展团。本届展会的最大亮点就是主办方精心策划与运作的“细分”理念。     

2007亚洲国际动力传动与控制技术展览会、2007亚洲国际物流技术与运输系统展览会在上海举行

2007亚洲国际动力传动与控制技术展览会（亚洲动力传动展）与2007亚洲国际物流技术与运输系统展览会（亚洲物流展），于2007年10月10-13日在上海新国际博览中心隆重举行。参展商有2000家，全方位展示动力传动与物流领域最新产品和尖端技术。两大展会吸引了全球超过6万名专业观众前来参观并洽淡业务。[第一段]     

PTC Asia 2007的记忆——记2007亚洲国际动力传动与控制技术展览会

2007年10月10日上午9时，在世界名城上海，在新国际博览中心的大厅，我们又一次见证了PTC Asia展会的盛大开幕。     

Minimum energy control of an s-cvt equipped power transmission

This article deals with a minimum energy control law of S-CVT connected to a dc motor. The S-CVT can smoothly transit between the forward, neutral, and reverse states without any brakes or clutches, and its compact and simple design and its relatively simple control make it particularly effective for mechanical systems in which excessively large torques are not required. And such an S-CVT equipped power transmission has the advantage of being able to operate the power sources in their regions of maximum efficiency, thereby improving the energy efficiency of the transmission system. The S-CVT was intended to primarily for use in small power capacity transmissions, thus a dc motor was considered here as the power source. We first review the structure and operating principles of the S-CVT. including experimental results of its performance. And then we describe a minimum energy control law of S-CVT connected to a dc motor. To do this, we describe the results of an analysis of the dynamics of an S-CVT equipped power transmission and the power efficiency of a DC motor. The minimum energy control design is carried out via B-spline parameterization. And we show numerical results obtained from simulations illustrate the validity of our minimum energy control design, benchmarked with a computed torque control algorithm for S-CVT.     

基于MPC的直驱式动力变速器离合器分级控制策略

在动力变速箱的换挡过程中,存在因离合器接合压力变化带来的冲击问题,为此,提出了一种基于模型预测控制(MPC)的离合器接合分级控制策略.首先,基于MPC算法控制,根据有关参数计算出了有效滑摩点,并且形成了比例阀的压力控制曲线,从而通过分级控制相应的比例阀,达到既快速响应又平稳起步加速的目的;然后,建立了基于MPC的高阶动...     

Recurrent-neural-network-based identification of a cascade hydraulic actuator for closed-loop automotive power transmission control

By virtue of its ease of operation compared with its conventional manual counterpart, automatic transmissions are commonly used as automotive power transmission control system in today’s passenger cars. In accordance with this trend, research efforts on closed-loop automatic transmission controls have been extensively carried out to improve ride quality and fuel economy. State-of-the-art power transmission control algorithms may have limitations in performance because they rely on the steady-state characteristics of the hydraulic actuator rather than fully exploit its dynamic characteristics. Since the ultimate viability of closed-loop power transmission control is dominated by precise pressure control at the level of hydraulic actuator, closed-loop control can potentially attain superior efficacy in case the hydraulic actuator can be easily incorporated into model-based observer/controller design. In this paper, we propose to use a recurrent neural network (RNN) to establish a nonlinear empirical model of a cascade hydraulic actuator in a passenger car automatic transmission, which has potential to be easily incorporated in designing observers and controllers. Experimental analysis is performed to grasp key system characteristics, based on which a nonlinear system identification procedure is carried out. Extensive experimental validation of the established model suggests that it has superb one-step-ahead prediction capability over appropriate frequency range, making it an attractive approach for model-based observer/controller design applications in automotive systems.     

输电线路巡检机器人的设计与控制系统研究

文章介绍了一种新型的履带式高压输电线路巡检机器人,阐述了基于递阶控制理论的分级控制系统结构设计和基于规则库模型的专家控制系统控制策略,仿真验证了机器人越障动作过程的正确性。     

Analysis and verification of power transmission characteristics of the hydromechanical transmission for agricultural tractors

In this study, we developed a network model of a Hydromechanical transmission (HMT) for tractors. We verified the developed network model using commercial software and analyzed the power transmission characteristics of an HMT-equipped tractor based on the verified network model. We developed a network model considering the power losses of the transmission elements to analyze the power transmission characteristics of the HMT’s main shift. Using this model, we analyzed the power transmission characteristics of the main shift and confirmed that the power of the main shift can be split and circulated depending on the stroke of the Hydrostatic unit (HSU). We then used the model to analyze the HSU stroke, the power transmission efficiency, and the wheel torque, all of which comprise the power transmission characteristics of an HMT-equipped tractor. As a result, the HMT changed the driving speed of the tractor by continuously varying the HSU stroke. The tractor efficiency increased with the driving speed at each mode and decreased after having reached its maximum efficiency. To verify the developed network model, we compared the analysis results of the tractor’s power transmission efficiency and wheel torque with those obtained from commercial software. From the comparative analysis, we confirmed that the power transmission efficiency and wheel torque of the two models coincided. Therefore, we conclude that the developed network model is highly suitable for analyzing the power transmission characteristics of the HMT.

     

基于波传输网络的高压脉冲电源开发

高压脉冲电场灭菌技术是近年来发展起来的极有潜力的非热灭菌技术,其中高压脉冲电源是系统的核心组成部分.本文提出了一种基于波传输网络原理的高压脉冲电源,其设计输出电压可达100kV,系统由脉冲形成网络产生高压脉冲,由工控机来作为系统的控制器.所开发的高压脉冲电源可满足食品高压脉冲电场非热力灭菌的需要.     

Precision power transmission

J.C. Moore discusses the hardware of a new concept in power transmission which promises to give greater precision     

Friction coefficient, torque estimation, smooth shift control law for an automatic power transmission

For shift quality improvement, torque sensors are currently too expensive to be used on production vehicles. To achieve smooth acceleration shift, the reference trajectory of the clutch slip speed for accomplishing the shift process within a designated shift completion time and its relationship with the clutch actuating torque were suggested by Jeong and Lee (1999). In order to facilitate the proposed algorithm, nonlinear estimators for necessary information such as the axle shaft torque, clutch friction and turbine torque were designed using only speed sensors. Accounting for the modeling error, a control law for this indirect smooth shift was proposed based on the above mentioned suggestions. Simulation results of the proposed estimators and shift controller were presented and further considerations for practical applications are discussed.     

载货汽车动力传动系统的优化设计

针对某一载货汽车的性能参数,提出原车整车匹配方面存在的问题。运用GT-DRIVE自带的DOE优化分析功能模块,优化汽车的传动系参数,通过改变主减速器速比和变速器各挡速比,提出了分别以整车动力性、燃油经济性以及权衡整车动力性、燃油经济性为目标的三种优化方案,通过分析结果,合理改变传动系参数,最终达到优化整车性能的目的。