Different modeling technologies of hydraulic load simulator for thrust vector control actuator
Апстракт
Hydraulic simulators are extremely important in the flight control actuator system's verification process. Flexible nozzle has a number of specifics, comparing to other flight controls, because the load cannot be described, classically, by the hinge moment. Additionally, classical hydraulic simulator, in which the cylinder simulates the load, is not sufficient for performing a complete simulation of the real load. Building a mechanical pendulum, to which a hydraulic cylinder acts, and that rests on two elastic supports, enables simulation of additional phenomena that exist in flexible nozzle, but not in other control surfaces. Force from impulse that exists in reality, and which is impossible to be generated by standard hydraulic simulator, can be realized through the pendulum. This paper demonstrates that a simulator can be designed through modelling of the elastic load using bond graph, without a precise elaboration of direction of forces in elastic structure, just by observing, on e...nergy level, the input of force in flexible structure over the point in which actuator force acts. Simulator with hydraulic cylinder is convenient to be used when there is a need for considering the risk of self-oscillation of flexible joint and nozzle, i.e. for defining the so-called notch filter. Then, the hydraulic cylinder of load simulator can generate the oscillation, frequency and amplitude that match this dynamic case of flexible nozzle actuator's load that is being reduced to its piston rod, without a risk of damaging the flexible structure that exists in the construction of a simulator with pendulum.
Кључне речи:
servo-distributor / load simulator / flexible nozzle / electro-hydraulic actuator / bond graph modellingИзвор:
Tehnički vjesnik, 2015, 22, 3, 599-606Издавач:
- Univ Osijek, Tech Fac, Slavonski Brod
Финансирање / пројекти:
- Космички транспортни системи ниске цене (RS-35044)
DOI: 10.17559/TV-20140621063240
ISSN: 1330-3651
WoS: 000356616900006
Scopus: 2-s2.0-84930890609
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Nauparac, Dragan B. AU - Prsić, Dragan H. AU - Miloš, Marko AU - Todić, Ivana PY - 2015 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2191 AB - Hydraulic simulators are extremely important in the flight control actuator system's verification process. Flexible nozzle has a number of specifics, comparing to other flight controls, because the load cannot be described, classically, by the hinge moment. Additionally, classical hydraulic simulator, in which the cylinder simulates the load, is not sufficient for performing a complete simulation of the real load. Building a mechanical pendulum, to which a hydraulic cylinder acts, and that rests on two elastic supports, enables simulation of additional phenomena that exist in flexible nozzle, but not in other control surfaces. Force from impulse that exists in reality, and which is impossible to be generated by standard hydraulic simulator, can be realized through the pendulum. This paper demonstrates that a simulator can be designed through modelling of the elastic load using bond graph, without a precise elaboration of direction of forces in elastic structure, just by observing, on energy level, the input of force in flexible structure over the point in which actuator force acts. Simulator with hydraulic cylinder is convenient to be used when there is a need for considering the risk of self-oscillation of flexible joint and nozzle, i.e. for defining the so-called notch filter. Then, the hydraulic cylinder of load simulator can generate the oscillation, frequency and amplitude that match this dynamic case of flexible nozzle actuator's load that is being reduced to its piston rod, without a risk of damaging the flexible structure that exists in the construction of a simulator with pendulum. PB - Univ Osijek, Tech Fac, Slavonski Brod T2 - Tehnički vjesnik T1 - Different modeling technologies of hydraulic load simulator for thrust vector control actuator EP - 606 IS - 3 SP - 599 VL - 22 DO - 10.17559/TV-20140621063240 ER -
@article{ author = "Nauparac, Dragan B. and Prsić, Dragan H. and Miloš, Marko and Todić, Ivana", year = "2015", abstract = "Hydraulic simulators are extremely important in the flight control actuator system's verification process. Flexible nozzle has a number of specifics, comparing to other flight controls, because the load cannot be described, classically, by the hinge moment. Additionally, classical hydraulic simulator, in which the cylinder simulates the load, is not sufficient for performing a complete simulation of the real load. Building a mechanical pendulum, to which a hydraulic cylinder acts, and that rests on two elastic supports, enables simulation of additional phenomena that exist in flexible nozzle, but not in other control surfaces. Force from impulse that exists in reality, and which is impossible to be generated by standard hydraulic simulator, can be realized through the pendulum. This paper demonstrates that a simulator can be designed through modelling of the elastic load using bond graph, without a precise elaboration of direction of forces in elastic structure, just by observing, on energy level, the input of force in flexible structure over the point in which actuator force acts. Simulator with hydraulic cylinder is convenient to be used when there is a need for considering the risk of self-oscillation of flexible joint and nozzle, i.e. for defining the so-called notch filter. Then, the hydraulic cylinder of load simulator can generate the oscillation, frequency and amplitude that match this dynamic case of flexible nozzle actuator's load that is being reduced to its piston rod, without a risk of damaging the flexible structure that exists in the construction of a simulator with pendulum.", publisher = "Univ Osijek, Tech Fac, Slavonski Brod", journal = "Tehnički vjesnik", title = "Different modeling technologies of hydraulic load simulator for thrust vector control actuator", pages = "606-599", number = "3", volume = "22", doi = "10.17559/TV-20140621063240" }
Nauparac, D. B., Prsić, D. H., Miloš, M.,& Todić, I.. (2015). Different modeling technologies of hydraulic load simulator for thrust vector control actuator. in Tehnički vjesnik Univ Osijek, Tech Fac, Slavonski Brod., 22(3), 599-606. https://doi.org/10.17559/TV-20140621063240
Nauparac DB, Prsić DH, Miloš M, Todić I. Different modeling technologies of hydraulic load simulator for thrust vector control actuator. in Tehnički vjesnik. 2015;22(3):599-606. doi:10.17559/TV-20140621063240 .
Nauparac, Dragan B., Prsić, Dragan H., Miloš, Marko, Todić, Ivana, "Different modeling technologies of hydraulic load simulator for thrust vector control actuator" in Tehnički vjesnik, 22, no. 3 (2015):599-606, https://doi.org/10.17559/TV-20140621063240 . .