期刊文献+
共找到8篇文章
< 1 >
每页显示 20 50 100
基于机器能动性的人机交互信任建构 被引量:10
1
作者 于雪 《自然辩证法研究》 CSSCI 北大核心 2022年第10期43-49,共7页
以人工智能为驱动的人机交互技术已经扩散到各类社会生活场景中,由其引发的信任问题得到了普遍关注。当前的人机信任研究多分散于对不同信任要素的分析上,而机器能动性的切入能够为建构人机交互的信任机制提供有效支撑。人机交互过程中... 以人工智能为驱动的人机交互技术已经扩散到各类社会生活场景中,由其引发的信任问题得到了普遍关注。当前的人机信任研究多分散于对不同信任要素的分析上,而机器能动性的切入能够为建构人机交互的信任机制提供有效支撑。人机交互过程中机器能动性的影响要素主要包括自动化程度、不透明度和交互强度,这三个要素共同影响了人机交互中“电子信任”的可信度。因此,可以通过调控机器能动性的方式建构人机交互中的信任机制,具体包括建构可信任自主系统、可解释的“白箱”系统以及信任校准的交互系统。 展开更多
关键词 机器能动性 人机交互 信任 自动化 信任校准
原文传递
Driving properties of plane wire-driven robot 被引量:3
2
作者 王克义 张立勋 孟浩 《Journal of Central South University》 SCIE EI CAS 2013年第1期56-61,共6页
A three-DOF (degree of freedom) planar robot completely restrained and positioned parallel pulled by four wires was studied. The wire driving properties were analyzed through experiments. The restrained three-DOF plan... A three-DOF (degree of freedom) planar robot completely restrained and positioned parallel pulled by four wires was studied. The wire driving properties were analyzed through experiments. The restrained three-DOF planar platform was established based on slippery course and bearing, and dSPACE real-time control system was used to perform the platform's motion control experiment on robot. Based on the kinematic equation and mechanical balance equation of moving platform, the stiffness of the robot system was analyzed and the calibration scheme of the system considering wire tension was put forward. Position servo control experiments were carried out, position servo tracking precision was analyzed, and real-time wire tension was detected. The results show that the moving error of the moving platform tracking is small (the maximum difference is about 3%), and the rotation error is large (the maximum difference is about 12%). The wire tension has wave properties (the wire tension fluctuation is about 10 N). 展开更多
关键词 wire driven robot driving properties CALIBRATION position control
下载PDF
Complete Modeling for Systems of a Marine Diesel Engine 被引量:6
3
作者 Hassan Moussa Nahim Rafic Younes +1 位作者 Chadi Nohra Mustapha Ouladsine 《Journal of Marine Science and Application》 CSCD 2015年第1期93-104,共12页
This paper presents a simulator model of a marine diesel engine based on physical, semi-physical, mathematical and thermodynamic equations, which allows fast predictive simulations The whole engine system is divided i... This paper presents a simulator model of a marine diesel engine based on physical, semi-physical, mathematical and thermodynamic equations, which allows fast predictive simulations The whole engine system is divided into several functional blocks: cooling, lubrication, air, injection, combustion and emissions. The sub-models and dynamic characteristics of individual blocks are established according to engine working principles equations and experimental data collected from a marine diesel engine test bench for SIMB Company under the reference 6M26SRP1. The overall engine system dynamics is expressed as a set of simultaneous algebraic and differential equations using sub-blocks and S-Functions of Matlab/Simulink. The simulation of this model, implemented on Matlab/Simulink has been validated and can be used to obtain engine performance, pressure, temperature, efficiency, heat release, crank angle, fuel rate, emissions at different sub-blocks. The simulator will be used, in future work, to study the engine performance in faulty conditions, and can be used to assist marine engineers in fault diagnosis and estimation (FDI) as well as designers to predict the behavior of the cooling system, lubrication system, injection system, combustion, emissions, in order to optimize the dimensions of different components. This program is a platform for fault simulator, to investigate the impact on sub-blocks engine's output of changing values for faults parameters such as: faulty fuel injector, leaky cylinder, worn fuel pump, broken piston rings, a dirty turbocharger, dirty air filter, dirty air cooler, air leakage, water leakage, oil leakage and contamination, fouling of heat exchanger, pumps wear, failure of injectors (and many others). 展开更多
关键词 marine diesel engine engine system cooling system lubrication system air system injection system combustion system emissions system fault diagnosis and estimation (FDI)
下载PDF
Hydro-mechanical Transmit Performance Analysis for a Continuously Variable Transmission 被引量:1
4
作者 Liang He Wanlin Guo Sihong Zhu 《Journal of Food Science and Engineering》 2016年第3期121-131,共11页
Based on an exact CAD model of hydro-mechanical continuously variable transmission (HMCVT) gearbox which can transmit 180 horsepower, virtual prototype of the HMCVT was built. Revolution speed of shafts, gears and c... Based on an exact CAD model of hydro-mechanical continuously variable transmission (HMCVT) gearbox which can transmit 180 horsepower, virtual prototype of the HMCVT was built. Revolution speed of shafts, gears and clutches of the HMCVT were calibrated by using results obtained by theoretical calculation and test methods. The needed power and torques of both mechanical power input shaft and hydropower input shaft were calculated by simulation. Hydraulic power distributing ratio and power flow of the system was also studied. The analysis results showed that cycle power was produced inevitably when the output shaft speed of HMCVT change smoothly during mechanical and hydraulic working state HM1 to HM4, and the instantaneous maximum cycle power was 39.5%. Then the overall transmission efficiency of HMCVT was studied, and the maximum overall efficiency of the system was about 87%. The results of the studies gave references to select suited engine and variable displacement pump for the HMCVT, and to develop rational speed control strategies for the HMCVT by changing displacement ratio of variable displacement pump. 展开更多
关键词 Tractor continuously variable transmission displacement ratio rotational speed torque power flow.
下载PDF
A survey on fabrication,control,and hydrodynamic function of biomimetic robotic fish 被引量:7
5
作者 YU JunZhi WEN Li REN ZiYu 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2017年第9期1365-1380,共16页
Understanding and replicating the locomotion principles offish are fundamental in the development of artificial fishlike robotic systems,termed robotic fish.This paper has two objectives:(1) to review biological clues... Understanding and replicating the locomotion principles offish are fundamental in the development of artificial fishlike robotic systems,termed robotic fish.This paper has two objectives:(1) to review biological clues on biomechanics and hydrodynamic flow control offish swimming and(2) to summarize design and control methods for efficient and stable swimming in robotic fishes.Our review of state-of-the-art research and future-oriented new directions indicates that fish-inspired biology and engineering interact in mutually beneficial ways.This strong interaction offers an important insight into the design and control of novel fish-inspired robots that addresses the challenge of environmental uncertainty and competing objectives;in addition,it also facilitates refinement of biological knowledge and robotic strategies for effective and efficient swimming. 展开更多
关键词 fish swimming ROBOTS robotic fish HYDRODYNAMICS motion control
原文传递
Study on air flow dynamic characteristic of mechanical ventilation of a lung simulator 被引量:8
6
作者 NIU JingLong SHI Yan +4 位作者 CAO ZhiXin CAI MaoLin CHEN Wei ZHU Jian XU WeiQing 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2017年第2期243-250,共8页
As an important life support treatment, mechanical ventilation is usually adopted in clinics. With the development of the res-piratory diagnostic and treatment technologies, air flow dynamics of mechanical ventilation... As an important life support treatment, mechanical ventilation is usually adopted in clinics. With the development of the res-piratory diagnostic and treatment technologies, air flow dynamics of mechanical ventilation is usually referenced in the evaluation of pulmonary status and assessment of respiratory therapy. In order to improve the ventilation efficiency and provide a reference for pulmonary diagnostics, in this paper, a new mathematical model of mechanical ventilation system was set up. Furthermore, a prototype mechanical ventilation system for an artificial simulating lung was designed and experimentally studied. Lastly, in order to improve the ventilation efficiency and provide a reference for pulmonary diagnostics, the air flow dynamics of the mechanical ventilation system was illustrated through simulation and experimental studies. The study can be helpful to the optimization of the mechanical ventilation system. 展开更多
关键词 mechanical ventilation dynamic characteristics artificial simulating lung diagnostic systems
原文传递
Pneumatic Performance of Staggered Impulse Turbine for OWC Wave Energy Convertor 被引量:1
7
作者 CUI Ying LIU Zhen Beom-Soo Hyun 《Journal of Thermal Science》 SCIE EI CAS CSCD 2015年第5期403-409,共7页
A staggered impulse turbine is proposed for asymmetric air flows in Oscillating Water Column wave energy plants, which is expected to enhance the pneumatic power output in a wave cycle. The setting angle of rotor blad... A staggered impulse turbine is proposed for asymmetric air flows in Oscillating Water Column wave energy plants, which is expected to enhance the pneumatic power output in a wave cycle. The setting angle of rotor blades is set as 5°. The 3D numerical simulations were conducted under steady conditions using MRF and Mixing Plane model based on CFD software Fluent 12.0. Its mean efficiencies under different velocity amplitude ratios are studied using quasi-steady analysis, which derive corresponding data from the numerical simulation. It is found that the staggered turbine shows better performance than the conventional one under the asymmetrical air flows. Furthermore, its mean efficiency and output-work in a wave period are compared with another unsymmetrical twin impulse turbine system. The results show that the staggered turbine shows better output-work performance than the twin turbine system over the high flow coefficient domain(φ>0.7), which provides more choices to future research on turbine's optimization. 展开更多
关键词 Wave Energy Oscillating Water Column Staggered Impulse Turbine Asymmetric Air Flows Nu-merical Simulation Quasi-steady Analysis
原文传递
Application of piezoelectric fiber composite actuator to aircraft wing for aerodynamic performance improvement 被引量:2
8
作者 LI Min YUAN JunXian +1 位作者 GUAN De CHEN WeiMin 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第2期395-402,共8页
The application of actuator made of piezoelectric material,particularly the advanced piezoelectric fiber composite due to the rapid development of smart materials and structures and active control technology in aviati... The application of actuator made of piezoelectric material,particularly the advanced piezoelectric fiber composite due to the rapid development of smart materials and structures and active control technology in aviation and aerospace industry,to aircraft for performance enhancements such as flight control,aerodynamic force optimization,structure weight reduction,and overall aircraft design represents a new challenge to researches.It is considered as one of the key technologies for developing future flight vehicle.An approach with virtual control surface instead of conventional control surface to control aerodynamic force distribution and flight performance by use of piezoelectric fiber composite actuators distributed on wing surface is presented here.Particularly,the design and implementation of increasing lift force,providing roll maneuver,decreasing induced drag and wing root moment in different flight environments by the same structure control platform are studied.The control effect and sensitivity are examined quantitatively.Generally speaking,better control effect can be obtained by making better use of aeroelastic character to enlarge the actuation strain produced by piezoelectric material. 展开更多
关键词 piezoelectric actuator piezoelectric fiber composite shape control aerodynamic characteristics morphing wing
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部