Hybrid modelling of machine tool axis drives

Whalley, R.; Ebrahimi, Morteza; Abdul-Ameer, A.

doi:10.1016/j.ijmachtools.2005.03.002

Cited by 38 publications

(22 citation statements)

References 10 publications

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“…In order to find ways to overcome these problems, under the funding of the doctoral scientific research foundation of Shandong Jiaotong University, the latest theory of mechanism [4][5][6][7][8][9][10] was applied to design the working devices of the construction machinery, and some of multi-DOF controllable loading mechanism was invented [11][12], which are mechanical loaders that can realize flexible control of bucket trajectory, and use link mechanism instead of hydraulic transmission. This kind of loading mechanism not only low in energy consumption, high in reliability and flexible in action, but also in full electric control, which is very suitable for the manufacture of a super small loader.…”

Section: Introductionmentioning

confidence: 99%

The inverse kinematics analysis and simulation study on the controllable loading mechanism

Zhang

Cai

2018

MATEC Web Conf.

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Abstract. The multi-DOF controllable loading mechanism adopts the electric drive system to replace the hydraulic drive system of traditional loader, not only has higher transmission efficiency and has better mechanical and electrical integration level, but also overcome the shortcomings of high cost of manufacture and maintenance.The inverse kinematics model of this type of loading mechanism was built by means of closed loop vector method. According to the performance index of the loading mechanism, the inverse kinematics model was solved by means of MATLAB software, and the input motion law of the two driving lever at different period of time is obtained, and a small prototype is built, which provides the basis for control system programming of this new type of leading mechanism. To some extent, this research lays a foundation for further development of this type of loading mechanism.

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Section: Introductionmentioning

confidence: 99%

The inverse kinematics analysis and simulation study on the controllable loading mechanism

Zhang

Cai

2018

MATEC Web Conf.

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“…No variation of the load mass or slide position is considered. Whalley et al [4] use a distributed parameter model of the ball screw shaft in the frequency domain. This model is coupled to rigid bodies modeling the slide and the motor and nonlinearities such as backlash and friction.…”

Section: Introductionmentioning

confidence: 99%

Distributed Parameter Modeling of Flexible Ball Screw Drives Using Ritz Series Discretization

Henke

Sawodny

Neumann

2015

IEEE/ASME Trans. Mechatron.

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Ball screw drives are used in automation applications and machine tools to translate rotational motion of an electric motor into translational motion of a slide. Their frequency responses show characteristic torsional and translational resonances. The resonance frequencies vary with the slide position, which is due to the distributed stiffness and inertia of the flexible ball screw. The proposed model treats the ball screw as a flexible element, using Ritz series expansions to obtain a finite approximation of the continuous deformations. The use of problem-specific basis functions allows for a low-order approximation, making the model especially well suited for control design. The model shows excellent validation results and reproduces the variation of the resonance frequencies with high accuracy.

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“…In another published paper, the ballscrew torsion was concentrated and represented as a torsional spring [2]. However, in large machines the ball screw may be several meters long with a relatively small diameter, and its slender beam characteristic will be obvious where the torsion is distributed along with the whole ball screw [3]. In fact in order to improve the driving stiffness, a larger diameter ball screw would be selected, but the system inertia would increase at the meantime.…”

Section: Introductionmentioning

confidence: 99%

Study on dynamics of large machine tool feed system based on distributed-lumped parameter model

Ding

Huang

2010

2010 International Conference on Mechanic Automation and Control Engineering

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The components spatial dispersion has important effect on the dynamic response of large machine tool feed system. Aimed at large milling gear machine, distributed parameter method was used to represent the influence of continuous distributed torsion in slender ball screw. Lumped parameter method was used to model AC servo system and worktable drive system. Finally, a complete distributed-lumped model of X-axis drive system was derived and simulated. The simulation results were compared with the results from pure lumped model. It proves that the dynamic response of distributed-lumped model is slower than the one of lumped model.

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Hybrid modelling of machine tool axis drives

Cited by 38 publications

References 10 publications

The inverse kinematics analysis and simulation study on the controllable loading mechanism

The inverse kinematics analysis and simulation study on the controllable loading mechanism

Distributed Parameter Modeling of Flexible Ball Screw Drives Using Ritz Series Discretization

Study on dynamics of large machine tool feed system based on distributed-lumped parameter model

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