Готові списки джерел за темами / Synchrophasing

Добірка наукової літератури з теми "Synchrophasing"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 29 січня 2023

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Зміст

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Synchrophasing".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Статті в журналах з теми "Synchrophasing"

1

Zhao, X., X. Huang, T. Zhang, and Y. Wang. "Integrated speed/synchrophasing control of turboprop engine." Aeronautical Journal 122, no. 1253 (May 24, 2018): 1038–50. http://dx.doi.org/10.1017/aer.2018.44.

Повний текст джерела
Анотація:
ABSTRACTPropeller synchrophasing control is an active method to reduce the noise and vibration of turboprop aircraft without additional weight and power. Phase control accuracy has a great influence on the noise reduction effect of synchrophasing. An integrated power/speed/synchrophasing control strategy is proposed to improve the control precision. Speed/phase control transformation logic based on a multi-blade phase plane is adopted which can take both the rapidity of speed response and phase control precision into account, but there exists switching oscillation during the mode transform process. In order to suppress the phase fluctuation due to exterior disturbance, a slave-slave control scheme is provided to take place of a master-slave scheme. Simulation results based on an integrated turboprop engine/propeller real-time non-linear model show that speed/phase integration logic can improve the response rapidity of both the speed and phase. The precision of the control system is verified to be in acceptable range.
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Sheng, Long, Xianghua Huang, and Yunfei Cao. "Propeller Synchrophasing Control with a Cylindrical Scaled Fuselage Based on an Improved Data Selection Algorithm." Energies 12, no. 14 (July 17, 2019): 2736. http://dx.doi.org/10.3390/en12142736.

Повний текст джерела
Анотація:
Propeller synchrophasing control is an active noise control method which can effectively reduce the noise in the cabin of a turboprop aircraft. The propeller signature model identified by the measured acoustic noise data is easily affected by flight speed, altitude, and the existence of the fuselage. Meanwhile, the noise excited by the propellers is nonstationary signal, which often fluctuates greatly, thus affecting the accuracy of the identification of the model. In this paper, a synchrophasing control experimental platform with a cylindrical scaled fuselage on ground is firstly established to validate the actual noise reduction in the cabin. Then, a minimum fluctuation data selection method based on wavelet filtering and three-parameter sinusoidal fitting is proposed to improve the identification accuracy of the propeller signature model. This method extracts the high-precision propeller blade passing frequency signal from the noise signal by using a wavelet filtering algorithm and selects the minimum fluctuation data segment by using a three-parameter sinusoidal fitting algorithm. The experimental results firstly show the significant noise attenuation achieved in the cabin using propeller synchrophasing control. Secondly, the propeller signature model improved by the minimum fluctuation data selection method has higher accuracy than that identified by the traditional method.
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Dench, M. R., M. J. Brennan, and N. S. Ferguson. "On the control of vibrations using synchrophasing." Journal of Sound and Vibration 332, no. 20 (September 2013): 4842–55. http://dx.doi.org/10.1016/j.jsv.2013.04.044.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Fuller, C. R. "Noise control characteristics of synchrophasing. I - Analytical investigation." AIAA Journal 24, no. 7 (July 1986): 1063–68. http://dx.doi.org/10.2514/3.9392.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Jones, James D., and C. R. Fuller. "Noise control characteristics of synchrophasing. II - Experimental investigation." AIAA Journal 24, no. 8 (August 1986): 1271–76. http://dx.doi.org/10.2514/3.9431.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Huang, Di, Tiejun Yang, Zhigang Liu, Michael J. Brennan, and Xinhui Li. "Synchrophasing Vibration Control of Machines Supported by Discrete Isolators." Journal of Marine Science and Application 18, no. 2 (June 2019): 195–204. http://dx.doi.org/10.1007/s11804-019-00093-7.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Cao, YunFei, XiangHua Huang, Long Sheng, and ZhiPeng Wang. "A flight experimental platform for synchrophasing control based on a small propeller UAV." Science China Technological Sciences 61, no. 12 (November 20, 2018): 1915–24. http://dx.doi.org/10.1007/s11431-018-9329-0.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Fuller, C. R. "Analytical model for investigation of interior noise characteristics in aircraft with multiple propellers including synchrophasing." Journal of Sound and Vibration 109, no. 1 (August 1986): 141–56. http://dx.doi.org/10.1016/s0022-460x(86)80028-1.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Huang, Xianghua, Long Sheng, and Yangyang Wang. "Propeller Synchrophase Angle Optimization of Turboprop-Driven Aircraft—An Experimental Investigation." Journal of Engineering for Gas Turbines and Power 136, no. 11 (June 12, 2014). http://dx.doi.org/10.1115/1.4027644.

Повний текст джерела
Анотація:
Propeller synchrophasing is an effective way of reducing interior noise and vibration of turboprop-driven aircraft. However, synchrophasing has achieved limited success in practice for the reason that the predetermined phase angles are not acoustically optimized for maximum noise reduction during all flight conditions. An investigation has been conducted out which includes two folds: first, the noise vector based on laboratory experimental data has been modeled and second, optimal phase to acquire minimum noise is obtained via optimization search. An improved identification method of vector noise model which can be less dependent to noise phase message is presented. Compared with traditional methods, this method can greatly reduce the real-time requirement between phase optimization model and control model or sound acquiring model, so it can eliminate the influence which communication delay brings on identification precision. A synchrophasing experimental platform is established to verify the vector noise modeling. It adopts two propellers-driven servo motors to simulate the interior noise environment of the aircraft. The influence of the date sampling condition on identification is also researched. Ant colony optimization with two improvements is applied to phase optimization of four propellers. Simulation results show that the improved algorithm requires much less calculation.
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Yang, Tiejun, Di Huang, Xinhui Li, Michael J. Brennan, Liubin Zhou, Minggang Zhu, and Zhigang Liu. "Vibration Control of a Floating Raft System by Synchrophasing of Electrical Machines: An Experimental Study." Journal of Vibration and Acoustics 140, no. 4 (March 30, 2018). http://dx.doi.org/10.1115/1.4039407.

Повний текст джерела
Анотація:
This paper describes an experimental investigation into the vibration control of multiple electrical machines installed on a large-scale floating raft system. Vibration transmission to a flexible hull-like structure that supports the floating raft is controlled by adjusting the phases of the electrical power supply to the machines—a technique known as synchrophasing. Each machine is driven by a phase asynchronous motor and has two counter rotating shafts with adjustable eccentric masses, which allows the dynamic force generated by each machine to be set independently. Up to four rotating machines are considered. A genetic algorithm is used in the search for the optimum relative phases between each machine, because it is impractical to carry out an exhaustive search of the huge number of possible phase combinations. It is demonstrated that vibration control using synchrophasing is feasible in a marine environment, and can achieve significant vibration reduction, by simply adding some sensors and a control system. Reduction in the total transmitted vibration, as measured by the sum of the squared accelerations from 22 error sensors on the hull-like structure, was found to be up to 13 dB, and vibration reduction at higher harmonic frequencies was found to be up to 51 dB.
Стилі APA, Harvard, Vancouver, ISO та ін.

Дисертації з теми "Synchrophasing"

1

Blunt, David Mark. "Optimisation and adaptive control of aircraft propeller synchrophase angles." Thesis, 2012. http://hdl.handle.net/2440/75757.

Повний текст джерела
Анотація:
This thesis provides a new and detailed examination of how the optimum propeller synchrophase angles for minimum cabin noise and vibration vary with different flight conditions, particularly altitude and airspeed, and how, based on these observations, adaptive control techniques could best be employed to further improve the noise-reducing potential of synchrophasing. This has been done through experimental investigations in one AP-3C Orion and two C-130J-30 Super Hercules aircraft. It is shown, using propeller signature theory, that synchrophasing has significant effects on the average cabin floor vibration and the average cabin sound pressure levels. In the trial aircraft, these effects range between 4 dB and 12 dB at the blade-pass frequency, depending on the flight condition and the aircraft. The effects at individual sensors locations can, however, sometimes exceed 20 dB. It is also shown that the effects of altitude and airspeed on the optimum synchrophase angles are significant, and that a fixed set of synchrophase angles cannot be optimal for more than a limited range of flight conditions. For example, over the range of altitudes and airspeeds considered in this investigation, a fixed set of angles is shown to produce results that can vary by more than half of the range from the lowest to the highest predicted average sound pressure level at the blade-pass frequency. Adaptive control of the synchrophase angles using pre-defined look-up tables or active control algorithms are considered, and the latter recommended for their ability to compensate for unknown and variable influencing factors. Two ranking strategies are developed and employed to identify the number and placement of error sensors for an active control system. Significantly, both strategies identify that the predicted average sound pressure levels at the blade-pass frequency in the trial aircraft could be maintained within 2 dB of the optimum across all considered flight conditions using as few as 3 to 6 well-placed microphones. A single-input (master propeller tachometer) multi-output (slave propeller synchrophase angles) feed-forward active control system with multiple error sensors (microphones or accelerometers) is developed using propeller signature theory and the Filtered-x LMS algorithm. Recommendations for further work are also made.
Thesis (Ph.D.) -- University of Adelaide, School of Mechanical Engineering, 2012
Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Synchrophasing"

1

Huang, Xianghua, Yangyang Wang, and Long Sheng. "Synchrophasing control in a multi-propeller driven aircraft." In 2015 American Control Conference (ACC). IEEE, 2015. http://dx.doi.org/10.1109/acc.2015.7171000.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!

До бібліографії