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Feasible workspace regions for general two-revolute manipulator

Conghui LIANG, Marco CECCARELLI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4, Pages 397-408 doi: 10.1007/s11465-011-0228-9

Abstract:

In this paper, a topology is presented for feasible workspace regions in general two-revolute manipulatorsThree general cases are analyzed in details to characterize workspace design capabilities for general two-revolutemanipulators.

Keywords： workspace two-revolute manipulators topology analysis design

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Singularity and workspace analysis of three isoconstrained parallel manipulators with schoenflies motion

Po-Chih LEE, Jyh-Jone LEE

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2, Pages 163-187 doi: 10.1007/s11465-012-0324-5

Abstract:

This paper presents the analysis of three parallel manipulators with Schoenflies-motion.Each parallel manipulator possesses two limbs in structure and the end-effector has three DOFs (degreeThe three isoconstrained parallel manipulators have the structures denoted as CuuUwHw-//-CvvUwHw

Keywords： parallel manipulator schoenflies motion kinematics singularity workspace performance index

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Tracking control of robot manipulators via output feedback linearization

FEI Yue-nong, Wu Qing-hua

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 3, Pages 329-335 doi: 10.1007/s11465-006-0034-y

Abstract: Simulation studies are undertaken based on a two-link robot manipulator to evaluate the proposed approach

Keywords： available comparison unmeasurable nonlinear perturbation observer

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Fuzzy force control of constrained robot manipulators based on impedance model in an unknown environment

LIU Hongyi, WANG Fei, WANG Lei

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2, Pages 168-174 doi: 10.1007/s11465-007-0028-4

Abstract: To precisely implement the force control of robot manipulators in an unknown environment, a control strategy

Keywords： predictive tracking corresponding stiffness algorithm

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Output tracking control of mobile manipulators based on dynamical sliding-mode control

WUYuxiang, FENG Ying, HU Yueming

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1, Pages 110-115 doi: 10.1007/s11465-007-0019-5

Abstract: A dynamical sliding-mode controller is devised to track the output of mobile manipulators.firstly a reduced dynamic model considering the dynamics of the driving motor is developed for mobile manipulatorsdesign method of the dynamical sliding-mode controller that is applied to the output tracking of mobile manipulators

Keywords： lower-dimensional nonlinear trajectory tracking diffeomorphism

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Adaptive robust neural control of a two-manipulator system holding a rigid object with inaccurate base Research

Fan XU, Jin WANG, Guo-dong LU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 11, Pages 1316-1327 doi: 10.1631/FITEE.1601707

Abstract:

The problem of self-tuning control with a two-manipulator system holding a rigid object in the presencepermits accurate online calibration of the relative translational base frame parameters of the involved manipulators

Keywords： Cooperative manipulators Neural networks Inaccurate translational base frame Adaptive control Robust

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Design and analysis of a class of redundant collaborative manipulators with 2-dimension large rotational

Xiaodong JIN, Yuefa FANG, Dan ZHANG, Xueling LUO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1, Pages 66-80 doi: 10.1007/s11465-019-0570-x

Abstract: 2R1T (R: Rotation; T: Translation) parallel spindle heads and the corresponding collaborative 5-axis manipulatorsIn order to construct 2D rotational degrees of freedom (DOF), a platform with 2-dimension revolute jointsThe corresponding 5-axis collaborative manipulators are presented by constructing a 2-DOF series translationalThe results show that these manipulators have large 2D rotational angles than the traditional A3/Z3 heads

Keywords： parallel mechanism redundant mechanism large rotational angles machine tools 2R1T spindle head collaborative manipulator

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LARM PKM solutions for torso design in humanoid robots

Marco CECCARELLI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4, Pages 308-316 doi: 10.1007/s11465-014-0318-6

Abstract:

Human-like torso features are essential in humanoid robots. In this paper problems for design and operation of solutions for a robotic torso are discussed by referring to experiences and designs that have been developed at Laboratory of Robotics and Mechatronics (LARM) in Cassino, Italy. A new solution is presented with conceptual views as waist-trunk structure that makes a proper partition of the performance for walking and arm operations as sustained by a torso.

Keywords： humanoid robots torso design parallel manipulators (PKM) conceptual design

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Carbon dots-based fluorescence sensor for two-photon imaging of pH in diabetic mice

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3, Pages 298-306 doi: 10.1007/s11705-022-2212-9

Abstract: Finally, the CA-CDs has been successfully applied for two-photon imaging of the pH in liver and kidney

Keywords： carbon dots two-photon imaging pH diabetic mice

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New medical risks affecting obstetrics after implementation of the two-child policy in China

Qiang Li, Dongrui Deng

Frontiers of Medicine 2017, Volume 11, Issue 4, Pages 570-575 doi: 10.1007/s11684-017-0552-5

Abstract:

China recently instituted a two-child policy in response to its aging population, declining workforce

Keywords： two-child policy birth defects cesarean delivery placenta previa

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Extended two-fluid model applied to analysis of bubbly flow in multiphase rotodynamic pump impeller

Zhiyi YU, Guoyu WANG, Shuliang CAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1, Pages 53-59 doi: 10.1007/s11465-009-0006-0

Abstract: This paper presents an extended two-fluid model based on the Navier-Stokes equations and the standardThe discrete equations are solved using a developed two-phase semi-implicit method for pressure-linkedSimulation is then carried out for the pure liquid flow and air-water two-phase flow with the inlet gas

Keywords： two-fluid model multiphase rotodynamic pump SIMPLEC algorithm numerical simulation

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A systematic review of current and emergent manipulator control approaches

Syed Ali AJWAD,Jamshed IQBAL,Muhammad Imran ULLAH,Adeel MEHMOOD

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2, Pages 198-210 doi: 10.1007/s11465-015-0335-0

Abstract: This recent trend is further justified by the fact that the robotic manipulators have complex nonlinearcomprehensive review of the state-of-the-art control techniques that find enormous potential in controlling manipulatorsresearchers, engineers and industrial-interns to realize the control laws for multi-degree of freedom (DOF) manipulators

Keywords： robot control robust and nonlinear control adaptive control intelligent control industrial manipulators

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Offline motion planning and simulation of two-robot welding coordination

Tie ZHANG, Fan OUYANG

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1, Pages 81-92 doi: 10.1007/s11465-012-0309-4

Abstract:

This paper focuses on the two-robot welding coordination of complex curve seam which means one robotgrasp the workpiece, the other hold the torch, the two robots work on the same workpiece simultaneouslypaper builds the dual-robot coordinate system at the beginning, and three point calibration method of twoslave scheme sets the poses versus time function of the point u on the workpiece, and calculates the two

Keywords： complex curve seam two robots coordinated welding motion planning

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Simulation of heterogeneous two-phase media using random fields and level sets

George STEFANOU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2, Pages 114-120 doi: 10.1007/s11709-014-0267-5

Abstract: This paper provides a critical examination of existing random field models of heterogeneous two-phaseTwo numerical examples are provided to illustrate the basic features of the different approaches.

Keywords： microstructure random fields level sets shape recovery two-phase media

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Modified landfill gas generation rate model of first-order kinetics and two-stage reaction

Jiajun CHEN , Hao WANG , Na ZHANG ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3, Pages 313-319 doi: 10.1007/s11783-009-0025-4

Abstract: The first-order kinetics and two-stage reaction (FKTSR) model of the LFG generation rate includes mechanismsof the nutrient balance for biochemical reaction in two main stages.

Keywords： landfill gas (LFG) generation rate model first-order kinetics two-stage reaction outflow function