Hydraulic Position Control System With Variable Speed Pump

̧kan, Hakan C ̧alıs; Balkan, Tuna; Platin, Bülent E.

doi:10.1115/dscc2009-2693

Cited by 13 publications

(6 citation statements)

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“…Waheed et al [ 13 , 14 ] proved that using a modified method of adaptive controlling, which consist of two parts (inverse neural control and adaptive correction factor or adaptive gain factor), can successfully control the DC motor velocity. Çalişkan et al [ 15 ] conducted a study on the implementation of a variable speed drive for position control in a hydraulic system. Kalman filter to reduce the noise in the feedback signal was used.…”

Section: Introductionmentioning

confidence: 99%

Design of uncertain displacement controlled velocity control system for hydraulic actuator

Mohmmed,

Hassan,

Ali

et al. 2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

Design of uncertain displacement controlled velocity control system for hydraulic actuator

Mohmmed,

Hassan,

Ali

et al. 2024

Heliyon

View full text Add to dashboard Cite

“…There are two main techniques by using of which the flow is controlled; valve control systems and pump controlled systems. In valve controlled systems, the flow of a fixed displacement and speed pump is controlled using throttling valve that is placed either at the pump outlet [1,2] or at the pump inlet [3][4][5] while in pump control systems the flow is controlled by adjusting either the displacement [6][7][8] or the speed of the pump [9,10]. Valve control systems suffer from low efficiency due to the power lost across the valves.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, displacement controlled systems are expensive and the dynamics of which is complicated due to the existence of the swashplate mechanism. Speed control systems combine the high efficiency and low cost [9].…”

Section: Introductionmentioning

confidence: 99%

Analytical Position Control System of a Linear Hydraulic Actuator Used in Aircraft Applications

2023

IJOMAM

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This paper proposes a novel control technique for motion control of a linear hydraulic actuator, in which actuator reference position and velocity profiles are generated analytically. The proposed algorithm parameterizes an eight-term exponential function based on initial, middle, and final boundary conditions. Nominal and off-nominal disturbance forces applied against the actuator are completely included to shape the desired system reference. This new scheme can create the reference pump rotational speed required to accurately control the presented system with no closed-loop commands and with excellent performance characteristics. Moreover, unlike the traditional hydraulic actuator control algorithms, the presented methodology is able to successfully respond to a wide range of disturbance forces while satisfying steady state conditions. The results showed that, the proposed controller steers the system to the steady state desired value within about 0.1 second only and with zero percent overshoot in terms of the reference input and about 2 percent for the disturbance input. Numerical results using the Monte-Carlo simulation method confirmed the effectiveness and the robustness of the new algorithm despite wide range of disturbance forces.

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“…The requirement of delivering variable power is attained by controlling the flow rate of the hydraulic fluid delivered by the pump. Variable flow control techniques are used in fluid power systems such as displacement control systems [1][2][3], speedcontrolled systems [4][5][6], and valve control systems [7][8][9]. A comparison of those techniques can be found in [10].…”

Section: Introductionmentioning

confidence: 99%

H∞ Loop Shaping Control Design of the Rotational Velocity of a Hydraulic Motor

2021

IJOMAM

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In this work, a hydraulic system in which the hydraulic motor velocity is controlled using a variable speed pump. A comprehensive dynamic model was created and the performance and stability of the open loop system were assessed. Then, PID and loop shaping H-infinity controllers were designed with the aim of improving the system performance. The multiplicative uncertainty, that is associated with uncertain parameters in the speed controlled velocity control system, was studied. Two parameters were introduced in the uncertainty analysis; the leakage coefficient and the viscous friction coefficient. The requirements of the system performance were defined in the frequency domain that was used to determine the robustness of the closed-loop velocity control system. The results showed that the proposed open loop hydraulic system is stable. It was also shown that using feedback control greatly improves the system performance. The performance of the nominal system, based on the obtained results, with H∞ controller was found to be better than that of the system with PID controller. It was found that the H∞ controller has the advantages of having robust performance by considering the uncertainty in addition to not having an integral control as in the PID control system. In addition, it was found that the system with the PID controller did not achieve robust performance.

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Hydraulic Position Control System With Variable Speed Pump

Cited by 13 publications

References 0 publications

Design of uncertain displacement controlled velocity control system for hydraulic actuator

Design of uncertain displacement controlled velocity control system for hydraulic actuator

Analytical Position Control System of a Linear Hydraulic Actuator Used in Aircraft Applications

H∞ Loop Shaping Control Design of the Rotational Velocity of a Hydraulic Motor

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