Modelling and Analysis of Step Response Test for Hydraulic Automatic Gauge Control

The position-pressure master-slave control of hydraulic servo system is a dual closed-loop system, which takes position closed loop as the main control system, pressure closed loop as the supplementary, bringing these two seemingly contradictory theories together while simultaneously control the system. When the position error value is bigger than the threshold value, the system will transfer the pressure signal to the signal which will be added to the position signal, and regulate the system. This paper first builds a mathematical model of the hydraulic servo system position-pressure master-slave control, then simulates the system with AMEsim and Matlab softwares, which verifies the feasibility of this function. Finally, experiments are conducted using the new function, and the results show that position-pressure master-slave control can improve the precision and stability of hydraulic servo system; this new function can also be applied to other high speed, high precision and heavy equipment.

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“…According to the equations above, the transfer function of the servo cylinder can be obtained, Eq. (25a): The gain of position sensor is [15]:…”

Section: Fig 5 the Schematic Of Servo Asymmetrical Controlling Asymmentioning

confidence: 99%

Research on the Position-Pressure Master-Slave Control for a Rolling Shear Hydraulic Servo System

Wang

Sun

Huang

et al. 2015

SV-JME

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“…In order to realize the constant tension curling, it is necessary to realize the radial motion of curling mechanism for achieving the action of the curl component expansion and condensation so as to control strip tension. Therefore, the study of cold strip coiling mechanism has a very important significance for improving product performance [5].…”

Section: Introductionmentioning

confidence: 99%

Computer Simulation and Analysis of Curl Mechanism for Cold Rolled Steel Strip

Zeng¹,

Jiao²,

Zhao³

2015

Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering

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Abstract. Curl mechanism in cold rolled steel strip coiler is the key part for strip curling. This paper established the 3D model of cold rolled steel strip coiler. Based on it, the structure of the curl mechanism is designed and analyzed. The stress distribution of the drum and the drum shaft in the curl mechanism are simulated by using finite element analysis. According to the given working parameters, the bending moment and the torque of the drum shaft are calculated by theoretical method and numerical simulation. The results provide guidance for the repair and maintenance of the curl mechanism in cold rolled steel strip coiler.

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“…It is estimated that rotor unbalancing is the main fault which causes heavy traffics [2]. However, the unbalance phenomenon in early time cannot be monitored by sensors [3,4,5].To detect the influence factors of unbalanced rotor, the finite element rotor dynamics simulation model is established by NASTRAN software. …”

Section: Introductionmentioning

confidence: 99%

Computer Modal Analysis of Rotating Machinery under Complex Conditions

Jiao¹,

Han²

2015

Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering

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Abstract. Due to the influence of the working environment, there is always unbalance fault in rotating machinery which is difficult to detect by sensors. In order to solve this problem, the unbalanced rotor model is established by using modal analysis theory in this paper. The first six mode shapes of the simulated rotor were analyzed. Based on it, the simulation model of mildly unbalanced rotor system was established and the relationships between the natural frequency and the rotor vibration mode were built. The experimental result shows the proposed model is effective for rotor unbalance evaluation of industrial dust blower under complex condition.

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Modelling and Analysis of Step Response Test for Hydraulic Automatic Gauge Control

Cited by 9 publications

References 17 publications

Research on the Position-Pressure Master-Slave Control for a Rolling Shear Hydraulic Servo System

Research on the Position-Pressure Master-Slave Control for a Rolling Shear Hydraulic Servo System

Computer Simulation and Analysis of Curl Mechanism for Cold Rolled Steel Strip

Computer Modal Analysis of Rotating Machinery under Complex Conditions

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