Determining the extension of a hydraulic cylinder using spectral estimation

Yagci, Baris; Frazho, A. E.; Sumali, Hartono

doi:10.1016/j.jsv.2004.01.052

Cited by 12 publications

(4 citation statements)

References 7 publications

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“…1, integrates the stepper motor, four-way valve, feedback mechanism and cylinder body as a whole. Digital pulse controls the position, direction and speed of the hydraulic cylinder, rather than the opening degree of the valve port, so that the control system is simplified and its reliability is enhanced [3,4].…”

Section: Set Forth the Working Principle Of The Digital Hydraulic Cyl...mentioning

confidence: 99%

Dynamic Characteristics Simulation of the Digital Hydraulic Cylinder Based on AMESim

Guo

Xiao

2012

AMR

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Hydraulic transmission has a wide range of applications and attains rapid development. As the traditional methods of mathematic modeling in the design of the electro-hydraulic control system are very complex, making the design and debugging cycle of the hydraulic system longer. Thus in this paper, using the AMESim which is a senior modeling software facing engineering task design, does the modeling and simulation calculations for one kind of digital hydraulic cylinder. We get its simulation in the application of the actual working condition. At the same time, we optimize the simulation parameters and analyze the simulation results. The simulation results and analysis can provide certain reference value for the design, debugging and subsequent improvement of the digital hydraulic cylinder. According to the simulation results, it can meet different operational requirements by making appropriate compensation and adjustment in practical applications.

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Section: Set Forth the Working Principle Of The Digital Hydraulic Cyl...mentioning

confidence: 99%

Dynamic Characteristics Simulation of the Digital Hydraulic Cylinder Based on AMESim

Guo

Xiao

2012

AMR

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“…Some scholars have proposed a scheme of transforming the actuator. Milecki, A. et al [ 13 ] and Yagci, B. et al [ 14 ] proposed stepper drive cylinders that use the stepper motor to output step control signal in order to drive the hydraulic valve spool. Dindorf, R. et al proposed a digital cylinder, in which stepper position grooves were set on the hydraulic cylinder, but the stepper position in this scheme is limited [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Simulation Research of Hydraulic Stepper Drive Technology Based on High Speed On/Off Valves and Miniature Plunger Cylinders

Qiu

2021

Micromachines

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The technology for stepper drive that can achieve accurate motion in the hydraulic field has always been urgently needed in the industry. This paper proposes a hydraulic stepper drive based on five high speed on/off valves and two miniature plunger cylinders. The stepper drive discretizes the continuous flow medium into fixed small steps through the miniature plunger cylinder and realizes the state control of the drive through the logic action of the high speed on/off valve. This paper improves the current stepper drive and establishes a mathematical model to analyze the error of the drive and calculate the position of the actuator. In addition, through simulation research, the performance parameters such as the single-step step characteristic and pressure characteristic of the stepper drive are studied. The results show that, compared with the technology of current stepper drive, this stepper drive can effectively remove the “post step” phenomenon, greatly improve the stepper accuracy of the stepper drive, and have a more excellent performance.

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“…Harmonic retrieval in additive colored noise is an important research topic [1,4,6,[8][9][10][11][13][14][15][16], in this problem, the number of harmonics and their frequencies often need to be estimated from noisy data, especially when the frequency of the harmonic signals are very close in spatial respect and corrupted with additive colored Gaussian or nonGaussian noise.…”

Section: Introductionmentioning

confidence: 99%

Harmonic Signals Retrieval Approach Based on Blind Source Separation

Wang

2010

Circuits Syst Signal Process

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A frequently encountered problem in signal processing is harmonic retrieval in additive colored Gaussian or non-Gaussian noise, especially when the frequencies of the harmonic signals are very close in space. The purpose of this paper is to develop an efficient Blind Source Separation (BSS) algorithm from linear mixtures of source signals, which enables to separate harmonic source signals using only one observed channel signal even if the frequencies of the harmonic signals are closely spaced. First, we establish the BSS based harmonic retrieval model in additive noise by using the only one observed channel, and analyze the fundamental principle by utilizing BSS method to retrieve harmonics. Then, we propose a BSS-based approach to the harmonic retrieval by resorting the concept of W-disjoint orthogonality in the over-complete BSS situation, and as a result, we get the separation algorithm using only one channel mixed signals. Simulation results show that the proposed separation algorithm-BSS-HR is able to separate the harmonic source signals.

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Determining the extension of a hydraulic cylinder using spectral estimation

Cited by 12 publications

References 7 publications

Dynamic Characteristics Simulation of the Digital Hydraulic Cylinder Based on AMESim

Dynamic Characteristics Simulation of the Digital Hydraulic Cylinder Based on AMESim

Simulation Research of Hydraulic Stepper Drive Technology Based on High Speed On/Off Valves and Miniature Plunger Cylinders

Harmonic Signals Retrieval Approach Based on Blind Source Separation

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