Identification of Dynamic Parameters of Modified LuGre Model and Application to Hydraulic Actuator

Yanada, Hideki; Takahashi, Katsuhiko; Matsui, Akinori

doi:10.5739/jfps.40.57

Cited by 11 publications

(7 citation statements)

References 12 publications

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“…The comparison shows that the new modified LuGre model can predict accurately the increase in size of hysteretic loop with the driving pressure p 1 , and the decrease in size of hysteretic loop with the resistance pressure p 2 . The results can be explained by the fact that the pressures affect the parameters F s and v s of the new modified LuGre model as shown in Equation (11).…”

Section: Comparison Between Experiments and Simulationmentioning

confidence: 99%

“…Measured velocity wave forms were used as the input to the model. The static parameters of the model, F s , F c , v s , v b , n, and σ 2 , were identified experimentally from the steady-state friction characteristics using the least-squares method and the dynamic parameters, σ 0 , σ 1 , σ h , and T were identified experimentally by the method proposed in [11,13]. Figure 2 shows the steady-state friction characteristics measured for the three pneumatic cylinders in both the extending and retracting strokes.…”

Section: Friction Modelsmentioning

confidence: 99%

“…The effects of the pressures on the dynamic friction characteristics for the smooth and low speed cylinders were similar to those for the standard cylinder. Using the identification method proposed in [11,13], the dynamic parameters of the new modified LuGre model were identified at various conditions of velocity variation and pressures. Table 3 shows the identification results of the dynamic parameters for the three pneumatic cylinders in the extending stroke at an operating conditions of p 1 = 0.3 MPa, p 2 = 0 MPa and f = 0.5 Hz.…”

Section: Dynamic Friction Characteristicsmentioning

confidence: 99%

“…However, all these models cannot simulate well the dynamic friction behaviors of a hydraulic cylinder in the sliding regime as shown in [10]. Yanada and Sekikawa [10] have made a modification to the LuGre model by incorporating lubricant film dynamics into the model and it has been shown that the proposed model, called the modified LuGre model, can simulate the dynamic behaviors of friction observed in hydraulic cylinders with a relatively good accuracy [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Friction Behaviors of Pneumatic Cylinders

Tran¹,

Yanada²

2013

ICA

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This paper deals with experimental investigation and modeling of dynamic friction behaviors in the sliding regime of pneumatic cylinders. Using three pneumatic cylinders, friction characteristics are investigated and modeled under various conditions of velocity variation and pressures. It is shown that a hysteretic behavior can be seen at low velocities in the friction force-velocity relation and the friction force varies nearly linearly with the velocity at high velocities. The hysteretic loop is expanded to higher velocities when the frequency of the velocity variation is increased, and its size is increased with increasing driving pressure and is decreased with increasing resistance pressure. It is shown that such behaviors can be relatively accurately simulated by the new modified LuGre model in which a few static parameters are varied with the frequency of velocity variation.

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Section: Comparison Between Experiments and Simulationmentioning

confidence: 99%

Section: Friction Modelsmentioning

confidence: 99%

Section: Dynamic Friction Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamic Friction Behaviors of Pneumatic Cylinders

Tran¹,

Yanada²

2013

ICA

Self Cite

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“…9 Yanada and Sekikawa 9 have made a modification to the LuGre model by incorporating lubricant film dynamics into the model, and it has been shown that the proposed model, called the modified LuGre model, can simulate the dynamic behaviors of friction observed in hydraulic cylinders with a relatively good accuracy. 10 Tran et al 11 have shown that the modified LuGre model is valid only in the negative resistance regime and cannot simulate the hysteretic behaviors observed in hydraulic cylinders in the fluid lubrication regime. In addition, they have revised the modified LuGre model by replacing the usual fluid friction term with a firstorder lead dynamics and have shown the usefulness of the new modified LuGre model in the entire sliding regime.…”

Section: Introductionmentioning

confidence: 99%

Effect of friction model on simulation of hydraulic actuator

Tran

Khaing

Endo

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part I:

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This article examines the effect of friction model on the simulation accuracy of hydraulic cylinders by using three friction models: a steady-state friction model, the LuGre model, and the new modified LuGre model. Hydraulic cylinder’s behaviors are measured under different sinusoidal inputs to the servo valve. Simulations are conducted under the same conditions as the experiments. The comparisons of simulated results with measured ones show that the new modified LuGre model can predict accurately the hydraulic cylinder’s behaviors while the LuGre model may cause high-frequency oscillations in velocity, friction force, and pressures, which are not observed in experiments.

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