Modelling and simulating a controlled press-brake supply system

Lovrec, Darko; Kastrevc, Mitja

doi:10.2507/ijsimm10(3)3.184

Cited by 17 publications

(12 citation statements)

References 2 publications

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“…Experimental data will also enable verification of a new valve model developed in the future based on a similar simulation model [19], the development of control algorithm for position and force control [20], failure analysis [21] and deformation analysis of controlled pneumatic actuator [22].…”

Section: Introductionmentioning

confidence: 99%

Volume Flow Characterization of PWM-Controlled Fast-Switching Pneumatic Valves

Pipan¹,

Herakovič²

2016

SV-JME

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Section: Introductionmentioning

confidence: 99%

Volume Flow Characterization of PWM-Controlled Fast-Switching Pneumatic Valves

Pipan¹,

Herakovič²

2016

SV-JME

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“…6 shows responses acquired from simulation (green) and measurement (red), whereas the pressure set-point is shown in blue. Detailed information related to the simulation is available in the literature [7,13,[15][16][17][18][19][20]. A similar conclusion about the dynamics can be made in the case of the use of a variable axial piston pump set to maximal displacement (VC-APP-drive concept).…”

Section: Frequency Driven Asynchronous Motor and Gear Pump -Vc-drive mentioning

confidence: 61%

Dynamic Behaviour of Different Hydraulic Drive Concepts – Comparison and Limits

Lovrec¹,

Tič²,

Tašner³

2017

Int. j. simul. model.

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Improvement in regard to machine energy efficiency is one of the more important goals throughout all fields of research. This is especially true for hydraulically driven machines with large installed power. The use of the appropriate drive concepts, along with a suitable control concept, can result in quite substantial energy savings. Equipping a hydraulic machine with a speed-variable drive and a variable displacement pump enables maximum efficiency tracking for all operating points, represents the most promising drive concept in regard to energy savings. For each operating point, there is an optimal pump setting; consequently, the hydraulic system is able to ensure hydraulic power with minimum losses if the drive components are selected thoughtfully and the system controlled properly. However, in the desire to maximise the system efficiency, the system's responsiveness is too often overlooked.The paper summarises the principle of different drive concepts, along with the drive controller, in terms of the dynamic response and the drive efficiency. Although the speed-variable drive concepts are the most efficient, they have some disadvantages, which are also presented.

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“…Such an exact model of hydraulic pipeline is not needed. Therefore a more appropriate was chosen -a discrete model also known as the model with concentrated parameters [16]. This discrete model is analogous to electrical circuits used by electrical engineers, where the properties of a circuit are represented by resistance, capacitance, and inductance.…”

Section: Hydraulic Tubing Modelmentioning

confidence: 99%

Simulation-Aided Determination of an Efficiency Field as a Basis for Maximum Efficiency-Controller Design

Lovrec¹,

Tič²,

Tasner³

2015

Int. j. simul. model.

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In the field of hydraulic drive technology various power supply systems are used within different power unit set-ups. The both of two mostly used drive concepts in modern electrohydraulic systems, a variable displacement pump driven by constant speed electric motor and fixed displacement pump driven by a variable speed electric motor, have some disadvantages, especially regarding the increasing demand for maximum efficiency of the entire power unit without lowering the high dynamics. The combination of a variable pump and speed-controlled electric motor, offers the option of setting two parameters of the drive, the rotational speed of the motor and the pump flow-rate.Such a combination allows all power unit components to operate within the areas of their maximum efficiencies, the so-called maximum efficiency drive. A prerequisite for designing suitable controllers that would ensure the operations of individual components within the areas of maximum efficiency, regardless of the current operating point, is certainly knowledge about the efficiency area of the entire power unit. This paper presents a procedure for determining areas of efficiency, first on the basis of simulation and detailed models of each component, and later verification of the model using an experiment.

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Modelling and simulating a controlled press-brake supply system

Cited by 17 publications

References 2 publications

Volume Flow Characterization of PWM-Controlled Fast-Switching Pneumatic Valves

Volume Flow Characterization of PWM-Controlled Fast-Switching Pneumatic Valves

Dynamic Behaviour of Different Hydraulic Drive Concepts – Comparison and Limits

Simulation-Aided Determination of an Efficiency Field as a Basis for Maximum Efficiency-Controller Design

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