Mechatronics of a ball screw drive using an N degrees of freedom dynamic model

Ansoategui, Igor; Campa, Francisco J.

doi:10.1007/s00170-017-0597-2

Cited by 26 publications

(21 citation statements)

References 21 publications

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“…Depending on the objectives of the analysis and how the power system of a wind turbine is configured, a model of lumped parameters could be chosen to perform the dynamic analysis. In the model analysis carried out by Ansoategui et al [33], two conclusions were reached. Firstly, if the purpose is to simulate the dynamic behavior of the system, then it is enough to use a model of 2 dof since it collects the first vibration mode, which will limit the bandwidth of the control loop.…”

Section: Dynamic Modeling Of the Drive Trainmentioning

confidence: 98%

“…It is very common to model a mechatronic system using 2-dof models [12,22], for example, machine tool drives [33]. These models of lumped parameters are a simplification of reality because they are simple to pose and the solutions can be parameterized.…”

Section: Dynamic Modeling Of the Drive Trainmentioning

confidence: 99%

“…From a design point of view, N-dof models are very useful because they allow for the carrying out of a detailed modal analysis. Using this kind of model, the component of the system that provides more mechanical instability can be detected and replaced [33].…”

Section: Dynamic Modeling Of the Drive Trainmentioning

confidence: 99%

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Mechatronic Modeling and Frequency Analysis of the Drive Train of a Horizontal Wind Turbine

et al. 2019

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The relevance of renewable energies is undeniable, and among them, the importance of wind energy is capital. A lot of literature has been devoted to the control techniques that deal with the optimization of the energy produced, but the maintainability of the individual wind turbines and of the farms in general is also a fundamental factor to take into account. In this paper, the authors address the general problem of knowing in advance the resonance frequencies of the power system of a wind turbine, with the underlying idea being that those frequencies should be avoided and that resonances do not occur only due to mechanical phenomena, but also because of electrical phenomena that in turn are influenced by control and optimization techniques. Therefore, the availability of that information embedded in the optimization techniques that control a wind turbine is of major importance. The main purpose of this paper was accomplished through two related objectives: the first was to obtain a mechatronic model (using a lumped parameters model of two degrees of freedom) of the drive train in the Laplace domain oriented to subsequently perform the described analysis. The second was to use that model to determine analytically the number and the value of the resonance frequencies from the generator angular velocity in such a way that such information could be used by any control algorithm or even by the mechatronic system designers. We assessed through experimental validation using a real 100 kW wind turbine that these two objectives were reached, demonstrating that the different vibration modes were detected using only the generator angular velocity.

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Section: Dynamic Modeling Of the Drive Trainmentioning

confidence: 98%

Section: Dynamic Modeling Of the Drive Trainmentioning

confidence: 99%

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Mechatronic Modeling and Frequency Analysis of the Drive Train of a Horizontal Wind Turbine

et al. 2019

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“…Up to now, there are three main methods to model the dynamic parameters of machining equipment. (1) Testing method: The method is mainly by hammer compaction test to measure the transfer function of the guide rail in the vertical direction and horizontal direction, then based on the modal theory to identify the stiffness and damping coefficient of the two directions and the dynamic parameters of the joint part of the linear guide rail are obtained [6,7]. (2) Theoretical calculation method: The method is based on the basic characteristic parameters of the joint, and simplified the combined model to obtain the stiffness and damping of the joint [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…However, it is difficult to accurately describe the parameters of the machine tool joints with the finite element analysis (FEA) of machining equipment at present, which can affect the accuracy of the simulation results; the test method can accurately measure the dynamic characteristics of the whole machine, but it needs to have the setting equipment as a test object, and cannot solve the structural optimization of processing equipment in the design stage. So, it is very important to study the dynamic performance of the machining equipment by combining the finite element simulation method and the testing method [3][4][5][6]. In this paper, the End-effector of the robot is used as the research object, firstly, the stiffness and damping parameters of the End-effector guide rail are identified by experiments, and the recognition results can be applied to the finite element model of machine tool, and the finite element analysis is carried out on the End-effector; then the modal analysis of the End-effector is performed, and compare the results of the analysis, verify the correctness of the finite element analysis, analyse and identify the weak link of the End-effector, and lay the foundation for the optimal design of structure of drilling system.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics of the End-effector of a Drilling Robot for Aviation

Xu¹

2018

IJMSA

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This study discusses the dynamic stiffness of the End-effector of a drilling robot for aircraft. In view of the requirements of automatic drilling processing for aircraft parts, based on the analysis of the working process of the automatic drilling End-effector, the End-effector of drilling unit has been employed in precision machine tools, It can provide very smooth motion and good verticality. In the design of the machines, it is necessary to obtain the stiffness of these guideway. Therefore, an identification method of the guideway stiffness is verified in this paper. In this method, the guideway stiffness is identified from the natural frequency of the moving body. First, a virtual prototype of the End-effector of drilling unit flexible is constructed by jointly using both ANSYS, which provides a foundation for further dynamic characteristic simulations. Next, the impact test is carried out for a drilling tool to obtain the vibration mode of its moving body, and simple vibration model is developed based on the obtained vibration mode to identify the natural frequency of the guideways. For further verification, natural frequencies of the moving body are calculated by FEM with the identified natural frequency and compared with the measured natural frequencies. The results shows that : the natural frequencies were calculated almost correctly with the identified equivalent stiffness, and which provides theoretical reference for improving the drilling efficiency and assembly quality of aircraft components.

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