Automatic Cooking Robot for Chinese Dishes

Until now, most of the kitchen works are done manually, which often make people bored and suffer from cooking oil smoke pollution. With the development of the robotic technology, it becomes more and more urgent for the appearance of the automatic cooking machines that can substitute man for most of those works. With this aim in mind, in this paper, a kind of automatic cooking robot is presented, which mainly consists of five parts ： the wok mechanism, the stirring-fry and dispersing mechanism, the feeding mechanism, fire control system and the assistant ingredients processing mechanism. Experiment results have proved that the robot has achieved the goal with respect to appearance, smell, and taste of the dishes cooked by the robot, according to the master cook＇s view.

Automatic teaching of stereovision-guided welding robot using ant colony optimization algorithm

A binocular stereovision system with a linear laser emitter is developed to detect seam position and its orientation, employing acquired 3-dimensional seam data, the automatic teaching of welding robot is implemented using a controlling strategy based on ant colony optimization（ ACO ） algorithm, in which the angle increment of robot joint is discretized as the nodes of ACO graph and a corresponding pheromone updating strategy is presented. The experimental results for curvilinear seams and saddle-shaped seams show that the automatic teaching of welding robot can be successfully completed using the ACO-based controlling strategy under the guidance of stereovision, and the welding trajectory generated by the proposed method has higher accuracy and less setting time compared with conventional proportional-integral-differential （PID） controller and fuzzy controller.

Design of Underwater Robot Lines Based on a Hybrid Automatic Optimization Strategy

In this paper, a hybrid automatic optimization strategy is proposed for the design of underwater robot lines. Isight is introduced as an integration platform. The construction of this platform is based on the user programming and several commercial software including UG6.0, GAMBIT2.4.6 and FLUENT12.0. An intelligent parameter optimization method, the particle swarm optimization, is incorporated into the platform. To verify the strategy proposed, a simulation is conducted on the underwater robot model 5470, which originates from the DTRC SUBOFF project. With the automatic optimization platform, the minimal resistance is taken as the optimization goal;the wet surface area as the constraint condition; the length of the fore-body, maximum body radius and after-body＇s minimum radius as the design variables. With the CFD calculation, the RANS equations and the standard turbulence model are used for direct numerical simulation. By analyses of the simulation results, it is concluded that the platform is of high efficiency and feasibility. Through the platform, a variety of schemes for the design of the lines are generated and the optimal solution is achieved. The combination of the intelligent optimization algorithm and the numerical simulation ensures a global optimal solution and improves the efficiency of the searching solutions.

Study of Robotization for Excavator on the Automatic Control System of the Excavating Process

Based on reference[1], the Automatic Control System of the Excavating Process (ACSEP) is studied and aualyzed In this paper- At first, the general structure of the control system is discussed- And theo depeded on the kinematical equations, the "Generator or Expected link variable (GE)" and "Generator of Actual bucket trajectory (CA)" are put forward. Finally, based on the current technology and existing techniques of WD-400 Mechanical Forward Excavator (MFE), the automatic system of excavating process composed of two relatively indepodent sub-systems is designed with simple but practical structure’ According to the computer simulation, this control system has high tracking precision to the desired trajectory and good adaptive capacity to the load disturbance.

Robot Automatic Grasping Based on Finger-Tip Laser Range Finders

Finger-tip range finders can be used to modify robot end effector's position & attitude and avoid collision. This paper introduces the development of finger tip short dis tance laser range finders for space robot multisensory gripper, including the sensors' measuring principle, signal processing circuit, etc. By using these sensors' informations the gripper can be automatically ajusted to grasp the object steadily and reliablly even if it is badly positioned.

Geometric model of roboticarc welding for automatic programming

Geometric information is important for automatic programming of arc welding robot. Complete geometric models of robotic arc welding are established in this paper. In the geometric model of weld seam, an equation with seam length as its parameter is introduced to represent any weld seam. The method to determine discrete programming points on a weld seam is presented. In the geometric model of weld workpiece, three class primitives and CSG tree are used to describe weld workpiece. Detailed data structure is presented. In pose transformation of torch, world frame, torch frame and active frame are defined, and transformation between frames is presented. Based on these geometric models, an automatic programming software package for robotic arc welding, RAWCAD, is developed. Experiments show that the geometric models are practical and reliable.

Study on Truss Robot Structure of Refrigerator Automatic Loader

Aiming at the requirements of intelligent loading and shipping in large household appliance industry,an automatic loading and unloading robot for refrigerator is proposed.The robot is a gantry truss robot,which is composed of active support,passive support,beam and fixture components at both ends to realize the taking and placing of the refrigerator on the logistics transmission line to the truck.In the actual working conditions,the no-load truss robot experiment,found that the robot in the design problems,and the robot was optimized.It not only solves the safety hazards of the refrigerator when grabbing and stacking products,but also realizes the automation and intelligence of the refrigerator conveying process.

Automatic generation of context-aware workflow documents for ubiquitous robot services

Intelligent robots in ubiquitous computing environment should be able to receive a variety of surrounding informa tion and provide users with appropriate services. A developer can describe the robot services that are proper to users＇ envir onments by using his or her various environments, and process them through the execution engine. However, it is difficult for a developer to describe and develop robot services, who knows all surrounding information which is called context infor mation. If there is a method for describing and documenting robot services in intuitive expressions, that is to use graphical user interfaces（GUls）, it would be very helpful. This paper suggests that robot service developers describe robot services us ing intuitive GUls with contextawareness. And the services can be automatically generated into workflow documents. Robot services that robot service developers have made with intuitive GUIs can be automatically generated into workflow docu ments by using the object modeling technique（OMT）. Developers can describe robot services based on contextaware work flow language（CAWL ）. For testing, scenariobased robot services are described using CAWLbased development tool, and their workflow documents are automatically generated.

A Robot Cooked My Goose!

IT＇s lunch hour on a weekday and the little restaurant in central Beijing is packed to th＇e gills. Harried-looking waiters run from table to table to cope with the stream of orders and the manager＇s fingers fly like lightning over the calculator as she totes up bills.

基于RobotStudio的陶瓷托辊轴承座自动装配生产线虚拟仿真

该文以陶瓷托辊轴承座自动装配生产线为研究对象,介绍了一种利用SolidWorks和RobotStudio对陶瓷托辊轴承座自动装配生产线的建模及虚拟运行生产的方案。根据实际工艺流程,进行了陶瓷托辊的夹具设计与轴承座的夹具设计;创建了Smart动态逻辑组件,模拟PLC、机器人与轴承座压装机等设备的I/O信号的通讯;设计了陶瓷托辊上下料机器人运动轨迹,实现了机器人的离线编程与仿真调试。仿真数据表明,实时改变机器人TCP速度等参数,可得到合理的运行速度与实现节能降耗的目的。该设计方案对陶瓷托辊轴承座自动装配生产线的实现提供了设计理论依据和实验平台,降低了生产线设计、调试的成本,提高了生产效率。

基于RobotStudio的空调压缩机自动装配生产线虚拟仿真

根据空调外机现实生产中压缩机装配工序的工业生产过程,利用SolidWorks和RobotStudio软件设计了压缩机自动装配生产线虚拟仿真方案。根据实际生产工艺流程,由搬运机器人将压缩机精确放置到机箱安装位置,随后由输送链将工件运送至多机器人协同装配工作站,实现对压缩机的自动化装配与检测工序。该设计方案为压缩机自动装配生产线的实现提供了设计依据和实验平台,缩短产线开发周期,节约操作者时间,提高工作效率,具有重要的应用意义。

基于RobotStudio的工业机器人自动化生产线仿真的研究

文章阐述了基于RobotStudio软件运用Smart组件实现工业机器人自动化生产线仿真研究,主要用Smart组件创建动态输送链、动态夹具,设定工作站逻辑等项目。关键技术是Smart组件的应用。在RobotStudio中创建码垛工作站进行仿真,利用Smart组件实现动画效果。案例应用调试结果说明,基于RobotStudio仿真工业机器人自动化生产线可以获取高效、直观的结果。

The Development of Dynamic Compliant Wrist for Robots

Based on an analysis of the relative shaft-to-hole position and attiude errors, as well as of the mechanics and Kinematics in the process of automatic assembly of industrial robots, the paper studies the principle of construction of dynamic wrists. Type I-3 and Ⅱ-6 dynamic compliant wrists have been designed and made. Prblems in the production of compliant elements and the connection between compliant elements and wrists were also solved. A study on the results of tests of the function of two kinds of dynamic compliant wrists shows that the dynamic compliant wrist's compliancy function can be improved by adding metallic materials having higher longitudinal and transverse rigidity into the softer elstomer. And the design Principle is proved to be feasible and practicable. It can be expected that the use of dynamic compliant wrist will greatly lower the technical requirements of the shaft-hole assembly and the requirements in the resetting accuracy.

基于RobotStudio的自动砌墙系统设计及其仿真

当今经济发展迅速,建筑工程施工技术水平也在稳步上升,但是建筑行业仍面临着人工砌墙效率低、劳动强度大、建筑工作条件恶劣等问题,基于此,设计了一种由机器人实现的自动砌墙系统。阐述了自动砌墙系统的工作原理,对自动砌墙系统的搬运垒砖装置、输送砖头装置、抹泥装置和机械手等进行了设计,对自动砌墙系统的工作站进行布局和模型的构建,对自动砌墙系统进行程序编制,通过ABB RobotStudio软件构建了自动砌墙系统的仿真模型,模拟了自动砌墙过程,验证了自动砌墙系统设计的合理性,为砌墙系统的制造提供了较好的依据。

Regularized automatic frequency response function acquisition of a milling robot operating in a high-dimensional workspace

Because robotic milling has become an important means for machining significant large parts,obtaining the structural frequency response function(FRF)of a milling robot is an important basis for machining process optimization.However,because of its articulated serial structure,a milling robot has an enormous number of operating postures,and its dynamics are affected by the motion state.To accurately obtain the FRF in the operating state of a milling robot,this paper proposes a method based on the structural modification concept.Unlike the traditional excitation method,the proposed method uses robot joint motion excitation instead of hammering excitation to realize automation.To address the problem of the lack of information brought by motion excitation,which leads to inaccurate FRF amplitudes,this paper derives the milling robot regularization theory based on the sensitivity of structural modification,establishes the modal regularization factor,and calibrates the FRF amplitude.Compared to the commonly used manual hammering experiments,the proposed method has high accuracy and reliability when the milling robot is in different postures.Because the measurement can be performed directly and automatically in the operation state,and the problem of inaccurate amplitudes is solved,the proposed method provides a basis for optimizing the machining posture of a milling robot and improving machining efficiency.

基于Robot测试框架的关键字驱动的研究与应用

为了有效提高软件的测试效率,通过对自动化测试技术之间优缺点比较,结合Web的特点和业务流程,提出了一种基于Robot测试框架的关键字驱动技术。在此技术的基础上,设计并实现了将Robot测试框架运行于RFT等测试工具,实现了测试脚本生成、测试执行与测试报告生成自动化,大大提高了自动化测试效率,保证了软件质量。

基于RobotStudio的自动生产线工作站设计与仿真

以自动生产线物料搬运工作站为研究对象,针对机器人与生产线进行物料自动搬运的问题,利用RobotStudio虚拟仿真软件对自动生产线物料搬运过程进行动态模拟和离线编程。研究给出了工作站的结构布局及生产线输送链的Smart组件设计,并结合机器人对工作站进行了离线编程与调试。在仿真调试的基础上,设计制造实际的自动生产线工作站。工作站由ABB机器人、码垛工作台、三相异步电机、供料单元、输送带及主控PLC等组成。给出了实际工作站系统架构和设备间的通信方式,将仿真工作站的程序导入实际工作站完成设备调试。该研究对于传统装备制造类企业进行设备升级改造具有很好的借鉴意义。

FLEXIBLE MAGNETIC WHEEL TYPE INTELLIGENT WELDING ROBOT FOR SPHERICAL TANK

An intelligent welding robot for spherical tank's all-position multi-layerwelds is developed. Based on the dynamics analyzing and simulation testing, a flexible magneticwheel mechanism is created as the robot's walking carriage. It makes the robot directly attracted tothe surface of the spherical tank so as to realize the all-position walking and welding withoutrail. At the same time, a CCD real-time tracing system is developed for the robot to repeatedlytrace the all-position and multi-layer seams. The welding tests show that the welding robot can makethe all-position and multi-layer welds with high tracing accuracy, excellent quality and reliablebehavior, and it can be applied for practical production.

Design of Drilling and Riveting Multi-functional End Effector for CFRP and Aluminum Components in Robotic Aircraft Assembly

To fulfill the demands for higher quality,efficiency and flexibility in aviation industry,a multi-functional end effector is designed to automate the drilling and riveting processes in assembling carbon fiber reinforced polymer(CFRP)and aluminum components for a robotic aircraft assembly system.To meet the specific functional requirements for blind rivet installation on CFRP and aluminum materials,additional modules are incorporated on the end effector aside of the basic processing modules for drilling.And all of these processing modules allow for a onestep-drilling-countersinking process,hole inspection,automatic rivet feed,rivet geometry check,sealant application,rivet insertion and installation.Besides,to guarantee the better quality of the hole drilled and joints riveted,several online detection and adjustment measures are applied to this end effector,including the reference detection and perpendicular calibration,which could effectively ensure the positioning precision and perpendicular accuracy as demanded.Finally,the test result shows that this end effector is capable of producing each hole to a positioning precision within ±0.5 mm,aperpendicular accuracy within 0.3°,a diameter tolerance of H8,and a countersink depth tolerance of±0.01 mm.Moreover,it could drill and rivet up to three joints per minute,with acceptable shearing and tensile strength.

Which is the Best PID Variant for Pneumatic Soft Robots?An Experimental Study

This paper presents an experimental study to compare the performance of model-free control strategies for pneumatic soft robots.Fabricated using soft materials,soft robots have gained much attention in academia and industry during recent years because of their inherent safety in human interaction.However,due to structural flexibility and compliance,mathematical models for these soft robots are nonlinear with an infinite degree of freedom(DOF).Therefore,accurate position(or orientation)control and optimization of their dynamic response remains a challenging task.Most existing soft robots currently employed in industrial and rehabilitation applications use model-free control algorithms such as PID.However,to the best of our knowledge,there has been no systematic study on the comparative performance of model-free control algorithms and their ability to optimize dynamic response,i.e.,reduce overshoot and settling time.In this paper,we present comparative performance of several variants of model-free PID-controllers based on extensive experimental results.Additionally,most of the existing work on modelfree control in pneumatic soft-robotic literature use manually tuned parameters,which is a time-consuming,labor-intensive task.We present a heuristic-based coordinate descent algorithm to tune the controller parameter automatically.We presented results for both manual tuning and automatic tuning using the Ziegler-Nichols method and proposed algorithm,respectively.We then used experimental results to statistically demonstrate that the presented automatic tuning algorithm results in high accuracy.The experiment results show that for soft robots,the PID-controller essentially reduces to the PI controller.This behavior was observed in both manual and automatic tuning experiments;we also discussed a rationale for removing the derivative term.