Dynamic characteristics of coupling shaft system in tufting machine based on the Riccati whole transfer matrix method

Huang, Shuang; Chi, Xinfu; Yang, Xu; Sun, Yize

doi:10.1177/0954406216642479

Cited by 6 publications

(5 citation statements)

References 20 publications

(27 reference statements)

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“…Compared with other methods, the whole transfer matrix method (WTMM) has more efficient computing power and more extensive application capabilities [23,24]. So, in this paper, it is used to analyze the unbalanced mass fault and spindle inclination fault of a motorized spindle.…”

Section: Dynamic Modelingmentioning

confidence: 99%

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Dynamic Modeling of Motorized Spindle System with Unbalanced Mass and Spindle Inclination

Gu,

Xie,

Liu

et al. 2023

Applied Sciences

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The high-speed motorized spindle has been wildly used in the field of aerospace processing, due to its advantages such as high speed, high precision, and high efficiency. CNC machine tools used for processing aerospace products require high machining accuracy, and once the spindle fails, it will seriously affect the quality of product processing. Thus, it is important to study the faults of the spindle, especially the faults caused by subtle errors. In this work, a dynamic model of a spindle with unbalanced mass fault and spindle inclination fault is established, and the natural frequencies and mode shapes of the motorized spindle are calculated by using the whole transfer matrix method (WTMM). The deflections of the spindle initial end in the different situations are discussed when the two faults happen independently. The results show that the spindle end deflection of the same fault has different sensitivity at different speeds. At the third order of natural frequencies, the deflection of a motorized spindle is greatest regardless of the fault that occurs. Although the motorized spindle rotates at the same speed, different faults could cause different mode shapes. At the lower speed, when the unbalanced mass fault happens, the mode shape is in an arched shape, and while the spindle inclination fault happens, the mode shape is in a concave shape.

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Section: Dynamic Modelingmentioning

confidence: 99%

“…[19,20] established a comprehensive integrated thermo-dynamic model for high-speed spindles. Xu et al (2017) [21] built the dynamic model of the motorized spindle system. They used this dynamic model to show that the vibrations are proportional to the mass of the unbalance.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling of Motorized Spindle System with Unbalanced Mass and Spindle Inclination

Gu,

Xie,

Liu

et al. 2023

Applied Sciences

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show abstract

“…The HGSS is composed of runners, turbine shafts, generator shafts, generator rotors, and guide bearings. This study discretizes the vertical HGSS with a continuous mass distribution, and transforms it into a multi degree of freedom nodes with the centralized mass and the centralized moment of inertia [34]. These nodes are generally selected in the generator rotors, bearings, runners, and shaft diameter changes.…”

Section: Model Of Hgssmentioning

confidence: 99%

Vibration Characteristics of a Hydroelectric Generating System with Different Hydraulic-Mechanical-Electric Parameters in a Sudden Load Increasing Process

et al. 2021

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In a sudden load increasing process (SLIP), the hydroelectric generating system (HGS) experiences a severe vibration response due to the sudden change of the hydraulic-mechanical-electric parameters (HMEPs). The instability of HGS limits the ability of sudden load increase, and its flexibility and reliability are reduced. Thus, in this study, a new transient nonlinear coupling model of HGS is proposed, which couples the hydro-turbine governing system (HTGS) and the hydro-turbine generator shafting system (HGSS) with the hydraulic-mechanical-electric coupling force, rotating speed, flow rate, hydro-turbine torque, electromagnetic torque, and guide vane opening. By using numerical simulation, the influences of different HMEPs on the vibration characteristics of HGS in SLIP are analyzed. The result shows that, compared with stable operating conditions, the vibration amplitude of HGS increases sharply in SLIP. The increase of the sudden load increasing amount, blade exit flow angle, mass eccentricity and excitation current, and the decrease in guide bearing stiffness and average air gap between the stator and rotor cause abnormal vibration of different degrees in the HGS. Hydraulic factors have the greatest influence on the nonlinear dynamic behavior of HGS. The maximum vibration amplitude of HGS in SLIP is increased by 70.46%, compared with that under stable operating conditions. This study provides reasonable reference for the analysis of the nonlinear dynamic behavior of HGS in SLIP under the multiple vibration sources.

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“…e actuators in tufting carpet machine and the yarn coupling act together to implant the yarn into the base fabric, thereby forming a tufted carpet [1,2].…”

Section: Introductionmentioning

confidence: 99%

Vibration Reduction of the Nonlinearly Tufted Carpet Yarn by a Modified Sliding Mode Control Method

Huang

2019

Shock and Vibration

Self Cite

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The yarn vibration causes the yarn tension value to fluctuate, causing a change in the amount of yarn feed, thus causing a deviation of the carpet pile height from the predetermined value. To solve this problem, the sliding mode control algorithm is used to design the sliding mode function and the sliding mode control law. And four variables in the yarn vibration system are controlled by the MATLAB software. For solving the chattering problem of the control law, the sliding mode control law is improved. The fuzzy sliding mode control algorithm based on the quasisliding mode is adopted. The results show that the sliding mode control algorithm is effective, but the sliding mode control force needs to be switched at high frequency and there is severe chattering. The fuzzy sliding mode control algorithm based on quasisliding mode is adopted to achieve better control effect with a smaller force. In addition, the control force does not have high-frequency switching, and the change is relatively stable, which reduces the chattering phenomenon of sliding mode control.

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Dynamic characteristics of coupling shaft system in tufting machine based on the Riccati whole transfer matrix method

Cited by 6 publications

References 20 publications

Dynamic Modeling of Motorized Spindle System with Unbalanced Mass and Spindle Inclination

Dynamic Modeling of Motorized Spindle System with Unbalanced Mass and Spindle Inclination

Vibration Characteristics of a Hydroelectric Generating System with Different Hydraulic-Mechanical-Electric Parameters in a Sudden Load Increasing Process

Vibration Reduction of the Nonlinearly Tufted Carpet Yarn by a Modified Sliding Mode Control Method

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