Effect of friction model on simulation of hydraulic actuator

Tran, Xuan Bo; Khaing, War Htun; Endo, Hiroshi; Yanada, Hideki

doi:10.1177/0959651814539476

Cited by 13 publications

(18 citation statements)

References 12 publications

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“…The parameter values of the three friction models used in these simulations are shown in Table 2. These values were taken from Table 2 in Tran et al (2016) in which the static parameters of the models, F s , Table 2. Values of the parameters of the three models used in simulation.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The RLG model (Tran et al, 2016) is a model where three modifications were made from the LG model. Firstly, a lubricant film dynamic has been incorporated into the function g(v) in Eqs.…”

Section: Revised Lugre Modelmentioning

confidence: 99%

“…The friction force-deflection curve in presliding regime of the pneumatic cylinder consists of transition curves, i.e. curves between velocity reversal points (Tran et al, 2016). Each velocity reversal starts a new transition curve and each transition curve can be divided into some segments depending on its shape.…”

Section: Revised Lugre Modelmentioning

confidence: 99%

“…The static parameters F s , F c , v s , v b , n, and σ 2 of the three models are identified from measured steady-state friction characteristics using the least-squares method and the dynamic parameters σ 0 , σ 1 , τ h , and T are identified from measured dynamic friction characteristics by the methods proposed in Tran et al (2012). The function f i (z) is identified from measured friction force-displacement characteristics by the methods proposed in Tran et al (2016).…”

Section: Revised Lugre Modelmentioning

confidence: 99%

“…In addition, the usefulness of the NMLG model in simulating the operating characteristics of a hydraulic servo system have been verified by Tran et al (2014). In a recent study, Tran et al (2016) have shown that the NMLG model cannot capture the friction characteristics observed experimentally in pneumatic cylinders when the pneumatic cylinders operated in pre-sliding regime and they have proposed a new friction model by incorporating a hysteresis function into the NMLG model. Although the usefulness of the new friction model, called the revised LuGre model (RLG model) in this study has been verified, the validity of this model in simulating the motion of electro-pneumatic servo systems has not been investigated.…”

Section: Introductionmentioning

confidence: 98%

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Effects of friction models on simulation of pneumatic cylinder

2019

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Abstract. This study examines effects of three friction models: a steady-state friction model (SS model), the LuGre model (LG model), and the revised LuGre model (RLG model) on the motion simulation accuracy of a pneumatic cylinder. An experimental set-up of an electro-pneumatic servo system is built, and characteristics of the piston position, the pressures in the two-cylinder chambers and the friction force are measured and calculated under different control inputs to the proportional flow control valves. Mathematical model of the electro-pneumatic servo system is derived, and simulations are carried out under the same conditions as the experiments. Comparisons between measured characteristics and simulated ones show that the RLG model can give the best agreement among the three friction models while the LG model can only simulate partly the stick-slip motion of the piston at low velocities. The comparison results also show that the SS model used in this study is unable to simulate the stick-slip motion as well as creates much oscillations in the friction force characteristics at low velocities.

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Section: Simulation Resultsmentioning

confidence: 99%

“…The RLG model (Tran et al, 2016) is a model where three modifications were made from the LG model. Firstly, a lubricant film dynamic has been incorporated into the function g(v) in Eqs.…”

Section: Revised Lugre Modelmentioning

confidence: 99%

Section: Revised Lugre Modelmentioning

confidence: 99%

Section: Revised Lugre Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Effects of friction models on simulation of pneumatic cylinder

2019

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Efficiency comparison of various friction models of a hydraulic cylinder in the framework of multibody system dynamics

2021

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Dynamic simulation of mechanical systems can be performed using a multibody system dynamics approach. The approach allows to account systems of other physical nature, such as hydraulic actuators. In such systems, the nonlinearity and numerical stiffness introduced by the friction model of the hydraulic cylinders can be an important aspect to consider in the modeling because it can lead to poor computational efficiency. This paper couples various friction models of a hydraulic cylinder with the equations of motion of a hydraulically actuated multibody system in a monolithic framework. To this end, two static friction models, the Bengisu–Akay model and Brown–McPhee model, and two dynamic friction models, the LuGre model and modified LuGre model, are considered in this work. A hydraulically actuated four-bar mechanism is exemplified as a case study. The four modeling approaches are compared based on the work cycle, friction force, energy balance, and numerical efficiency. It is concluded that the Brown–McPhee approach is numerically the most efficient approach and it is well able to describe usual friction characteristics in dynamic simulation of hydraulically actuated multibody systems.

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