Measurement and Simulation of Electric Power Consumption of Feed Drive Systems

2013 ◽  
Author(s):  
Akio Hayashi ◽  
Ryuta Sato ◽  
Ryoma Iwase ◽  
Masayuki Hashimoto ◽  
Keiichi Shirase
Keyword(s):  
Power Consumption ◽  
Simulation Method ◽  
Linear Motor ◽  
Drive System ◽  
Ball Screw ◽  
Motor Drive ◽  
Feed Drive ◽  
Experimental Apparatus ◽  
Drive Systems ◽  
Feed Drive System

In this study, in order to investigate the power consumption of feed drive system, a mathematical model to predict for the electric power consumption of feed drive systems is proposed by using the single-axis experimental apparatus. This can be driven by either of ball screw or linear motor and it is possible to change the mechanical properties of the machine such as grease viscosity of the table. The power consumption is simulated by proposed simulation method based on the mathematical model of feed drive system and the simulated results are compared with the measured results of the experimental apparatus to confirm the validity of the simulated results. In addition, it is clarified that the energy usages of the feed drive system. The energy losses of the feed drive system are divided into the loss of viscous friction, coulomb’s friction, servo amplifier, and motor. These energy losses are calculated by the proposed model. Then, it is investigated that the influence of the velocity and the friction to the power consumption of feed drive system experimentally. As the results, it is confirmed that proposed simulation method can accurately predict the power consumption of the ball-screw feed drive system. It is also clarified that the friction energy loss of ball-screw drive is larger than one of linear motor drive, and the friction characteristics of linear guides influences the power consumption of linear motor drive system.

Modeling and Controller Tuning Techniques for Feed Drive Systems

2005 ◽  
Author(s):  
Ryuta Sato ◽  
Masaomi Tsutsumi
Keyword(s):  
Transfer Function ◽  
Drive System ◽  
Ball Screw ◽  
Model Matching ◽  
Velocity Control ◽  
Actual System ◽  
Controller Tuning ◽  
Feed Drive ◽  
Drive Systems ◽  
Feed Drive System

In this paper, a new modeling, and controller tuning method for feed drive systems is described. Typical feed drive systems consist of an AC servo motor, a ball screw, linear guides, and a servo controller. In order to design high performance systems, it is effective to make a model and analyze its behavior. In this study, a feed drive system is modeled by a vibration model with two degrees of freedom. Various kinds of motions are measured and simulated. The results of the experiment and simulation show that these motions are well simulated by the model. This means that the proposed model can accurately estimate the transfer function of the actual system. As a result, it is easy to design a controller based on the transfer function. The gains in the velocity control loop are calculated based on the partial model-matching method. Two PI and I-P velocity controllers are applied to the feed drive system. The step responses are then compared to each other. The position loop gain is calculated from the frequency response of the velocity control system. The proposed method is applied to an actual feed drive system, and it is confirmed that the proposed method yields comparable performance to the system designed by the conventional tuning way.

Dynamic Thermal-Structure Coupling Analysis and Experimental Study on Ball Screw Feed Drive System of Precision Machine Tools

2017 ◽  
Vol 868 ◽  
pp. 124-135 ◽  
Author(s):  
Chi Ma ◽  
Jun Yang ◽  
Xue Song Mei ◽  
Liang Zhao ◽  
Hu Shi ◽  
...  
Keyword(s):  
Thermal Structure ◽  
Thermal Characteristic ◽  
Coupling Model ◽  
Drive System ◽  
Ball Screw ◽  
Simulation Accuracy ◽  
Feed Drive ◽  
Drive Systems ◽  
Feed Drive System ◽  
Screw Feed

To improve the simulation accuracy of the thermal characteristic of ball screw feed drive systems, a dynamic thermal-structure coupling model, which considered the effect of the thermal contact conductance (TCC) of the solid joint on the accuracy of simulation results, was proposed to conduct thermal characteristic analysis of ball screw feed drive systems. The predictive model for TCC was proposed based on the micro morphology description of rough surfaces and the contact load distribution of solid joints. Then, the dynamic thermal-structure model of the ball screw feed drive system was established. To validate the effectiveness of the dynamic thermal-structure coupling model, thermal characteristic experiments of the ball screw feed drive system were conducted under different feed rates. The results showed that the simulation accuracy of temperature field and axial thermal elongation can be improved from 65% to 87% and from 70% to 85%, respectively.

HSC Linear Motor Machine Dynamic Stiffness

2015 ◽  
Vol 772 ◽  
pp. 218-223
Author(s):  
Zoran Pandilov ◽  
Vladimir Dukovski
Keyword(s):  
Experimental Measurement ◽  
High Speed ◽  
Dynamic Stiffness ◽  
Linear Motor ◽  
Drive System ◽  
Simulation Program ◽  
High Speed Cutting ◽  
Feed Drive ◽  
Proposed Model ◽  
Feed Drive System

In this paper a model of the feed drive system with disturbance force for High Speed Cutting (HSC) linear motor machine is given. The dynamic stiffness for the proposed model is analysed. A simulation of the influence of some parameters on feed drive dynamic stiffness is performed with the simulation program MATLAB & SIMULINK. Correctness of the proposed model is verified with an experimental measurement of the dynamic stiffness of the feed drive on the prototype HSC linear motor machine (HSC 11).

scholarly journals Experiment-based thermal behavior research about the feed drive system with linear scale

2018 ◽  
Vol 10 (11) ◽  
pp. 168781401881235
Author(s):  
Yang Li ◽  
Jun Zhang ◽  
Dongxu Su ◽  
Changxing Zhou ◽  
Wanhua Zhao
Keyword(s):  
Closed Loop ◽  
Great Influence ◽  
Drive System ◽  
Ball Screw ◽  
Heat Sources ◽  
Positioning Error ◽  
Thermally Induced ◽  
Feed Drive ◽  
Feed Drive System ◽  
Screw Feed

Positioning error of the feed drive system has great influence of the machining quality. In order to guarantee the positioning accuracy, the linear grating scale is adopted to form a full-closed loop. However, due to the inner heat sources and environmental temperature variations, the linear grating scale could expand and the thermally induced positional deviation is generated. In this article, temperatures and positional deviations of the ball screw feed drive system and the linear motor feed drive system equipped with linear scales were tested. The factors that affect the positioning error were analyzed. Then, the temperatures and positioning coordinates were used as inputs to build the thermally induced positional deviation model of full closed-loop feed drive system. Based on the model, coordinate values of the machine tool were adjusted and the compensation was implemented. The testing results verified that after compensation, the positional deviations were greatly reduced.

The Analysis of Influence Factors about Dynamic Characteristics of a Ball Screw Feed Drive System

2015 ◽  
Vol 799-800 ◽  
pp. 576-580 ◽  
Author(s):  
Yi Guang Shi ◽  
Hui Xiao ◽  
Jun Ao Zhang ◽  
Da Wei Zhang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Natural Frequency ◽  
Element Model ◽  
Drive System ◽  
Ball Screw ◽  
Feed Drive ◽  
Joint Parameters ◽  
Feed Drive System ◽  
Screw Feed

This paper presents relationships between some vital parameters and the natural frequency of the ball screw feed drive system. A finite element model (FEM) of a machine tool feed drive system is established with joint parameters added in based on the SAMCEF software. Using the finite element model, the influences of the material properties of the worktable, the diameter of the ball screw and joint parameters on the natural frequency of axial vibration are derived. These results provide a reliable basis for the optimization design of the ball screw feed drive system.

Axial dynamic characteristic parameters identification of rolling joints in a ball screw feed drive system

2015 ◽  
Vol 230 (14) ◽  
pp. 2449-2462 ◽  
Author(s):  
Jianmin Zhu ◽  
Tongchao Zhang ◽  
Jian Wang ◽  
Xiaoru Li
Keyword(s):  
Harmonic Excitation ◽  
Drive System ◽  
Ball Screw ◽  
Axial Stiffness ◽  
Axial Vibration ◽  
Characteristic Parameters ◽  
Feed Drive ◽  
Stiffness And Damping ◽  
Feed Drive System ◽  
Screw Feed

The dynamic characteristic parameters of mechanical joints are difficult to determine in theoretical modeling, dynamic simulation, and servo controller design for the ball screw feed drive system. Therefore, this study proposes a novel method for identifying the axial stiffness and damping parameters of the rolling joints in an assembled ball screw feed drive system. First, the proposed method deduces the axial vibration equations of the feed drive system with a harmonic excitation force exerted on its worktable. Second, the identification model of the axial stiffness and damping parameters of the rolling joints is established on the basis of the equations. Third, the identification equations are built by measuring the distance between the screw supporting points, the frequency, and the amplitude of the harmonic excitation force, as well as the amplitude of the axial vibration velocity of the screw end section. The axial stiffness and damping parameters of the rolling joints are finally determined by solving the identification equations using the genetic algorithm. With a ball screw feed drive system as the research object, the proposed method is used to identify the rolling joints’ axial stiffness and damping parameters of the ball screw assembly, as well as the left and the right bearing groups. The experiments show that the proposed method is correct, effective, and achieves high identification accuracy.

FPGA-based accuracy mechatronics of a feed-drive system with ball screw

2021 ◽  
Author(s):  
Carlos E. Marquez-Garcia ◽  
Jesus Lopez-Gomez ◽  
Fermin Martinez-Solis ◽  
M. A. Diozcora Vargas-Trevino ◽  
Sergio Vergara-Limon ◽  
...  
Keyword(s):  
Drive System ◽  
Ball Screw ◽  
Feed Drive ◽  
Feed Drive System
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