搜索结果: 1-13 共查到“机械工程 Parallel”相关记录13条 . 查询时间(0.046 秒)
Experimental Characterization of Operation of a Waist-Trunk System with Parallel Manipulators
humanoid robots waist-trunk system parallel manipulators
2011/8/5
In the last decade, an extensive research activity has been focused on the upper and lower limbs of humanoid robots. However, due to mechanical design difficulties and complex control of multi-body sy...
Separation of Comprehensive Geometrical Errors of a 3-DoF Parallel Manipulator Based on Jacobian Matrix and its Sensitivity Analysis with Monte-Carlo Method
parallel kinematic machines (PKMs) limited-degree-of-freedom (limited-DoF) error separation
2011/8/4
Parallel kinematic machines (PKMs) have the advantages of a compact structure, high stiffness, a low moving inertia, and a high load/weight ratio. PKMs have been intensively studied since the 1980s, a...
Dynamic Feedforward Control of a Novel 3-PSP 3-DOF Parallel Manipulator
parallel manipulator dynamic feedforward control
2011/8/4
Parallel manipulators with less than six degrees of freedom (DOF) have been increasingly used in high-speed hybrid machine tools. The structural features of parallel manipulators are dynamic, a charac...
Homing Strategy for a 4RRR Parallel Kinematic Machine
homing strategy safely homing operation maximum safely homing space
2011/8/4
Returning home is the most important process of a parallel kinematic machine (PKM) with incremental encoders. Currently, most corresponding articles focus on the accuracy of homing process, and there ...
Dynamics Analysis of a Parallel Mill-turn Tool Spindle Head Driven by Dual-Linear Motors Using Extended
NC machine tools dynamics modeling transfer matrix method (TMM)
2011/8/4
The hybrid dynamics of multi-rigid-body and multi-flexible-body system becomes the mainstream of multi-body dynamics. Currently there lacks a compact approach to model the hybrid dynamics, especially ...
Kinematic Calibration and Forecast Error Compensation of a 2-DOF Planar Parallel Manipulator
parallel manipulator kinematic calibration error compensation minimal linear combinations (MLCs)
2011/8/4
This paper presents a method combined step kinematic calibration and linear forecast real-time error compensation in order to enhance the precision of a two degree-of-freedom (DOF) planar parallel man...
Dynamic Feedforward Control of a Novel 3-PSP 3-DOF Parallel Manipulator
parallel manipulator dynamic feedforward control high-speed hybrid machine tool
2011/8/4
Parallel manipulators with less than six degrees of freedom (DOF) have been increasingly used in high-speed hybrid machine tools. The structural features of parallel manipulators are dynamic, a charac...
Separation of Comprehensive Geometrical Errors of a 3-DoF Parallel Manipulator Based on Jacobian Matrix and its Sensitivity Analysis with Monte-Carlo Method
parallel kinematic machines (PKMs) limited-degree-of-freedom (limited-DoF)
2011/8/4
Parallel kinematic machines (PKMs) have the advantages of a compact structure, high stiffness, a low moving inertia, and a high load/weight ratio. PKMs have been intensively studied since the 1980s, a...
New Hybrid Parallel Algorithm for Variable-sized Batch Splitting Scheduling with Alternative Machines in Job Shops
variable-sized batch splitting differential evolution alternative machines
2011/8/3
The batch splitting scheduling problem has recently become a major target in manufacturing systems, and the researchers have obtained great achievements, whereas most of existing related researches fo...
Stability and Behaviour of Parallel-Sided Workpieces Held by a Robot Gripper
Robot Grippers mechanisms stability kinematic similarity
2009/10/15
The stability and behaviour of parallel-sided workpieces held by a two-fingered robot gripper were investigated. The behaviour of the workpiece under an external force was studied by computer simulati...
Viscous Heating Effects in Viscoelastic Flow between Rotating Parallel-Disks
Polymeric (Viscoelastic) fluid Parallel-Disks Rheometry Nonisothermal
2009/10/12
Viscoelastic flow between two rotating parallel-disks (plates) is studied. First the current state of the art is discussed and the limitations resulting from the simple flow assumptions are reported. ...
The Effect of Injection/Suction on Flow past Parallel Plates with Transpiration Cooling
Incompressible Fluid Injection/Suction Skin-Friction Heat Transfer
2009/9/30
This study investigated the effect of injection/suction between 2 horizontal parallel porous flat plates, with transverse sinusoidal injection of fluid at the stationary plate and its corresponding re...
基于牛顿欧拉法的2UPS-2RPS并联机构逆动力学分析（Inverse Dynamics of a 2UPS-2RPS Parallel Mechanism by Newton-Euler Formulation）
并联机构 逆动力学 驱动力
2009/5/22
2UPS-2RPS为具有两种不同支链结构的4自由度并联机构，具有结构简单，制造成本低，控制容易等优点。由于自由度数目少于6，机构的支链不仅传递驱动力，同时还向末端提供约束力，因此在对机构动力学控制及尺度和截面参数动力学优化时，驱动力和约束力分析都是必要的。本文运用牛顿欧拉法建立了该机构的逆动力学方程。在给定动平台的运动规律和外力后，通过动力学方程求解得出所需驱动力和约束力矩，并给出仿真实例。