Excitation of Piezoelectrically Actuated Nozzle-Flapper Valve and Its Potential for Fuel Flowmeter Dynamic Calibration

Wang, Bin; Du, Yihao; Ye, Zhifeng

doi:10.1109/tmech.2019.2963501

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…With the advantages of high resolutions, fast response, and compact structure [1,2], PEAs have attracted widespread attention in aerospace electro-hydraulic systems for highspeed and high-precision fluid power transmission and control [3,4]. In such systems, PEAs have been studied to serve as the core actuating parts of the fluid control or power components, such as flow control valves [5,6], digital on/off valves [7,8], and hydraulic pumps [4,9].…”

Section: Introductionmentioning

confidence: 99%

Development and fault-tolerant control of a distributed piezoelectric stack actuator

Zhang,

Ling,

Zhu

2024

Smart Mater. Struct.

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Piezoelectric stack actuator (PSA) has attracted widespread attention in aerospace applications. However, the severe operating conditions would bring certain risks to PSA, leading to decreased performance or even failure. The conventional PSA structure lacks adaptability in the event of a complete failure occurring within the piezoelectric stack layer (PSL) due to its centralized design and driving method. To address the reliability challenges inherent in PSAs, this paper proposes a novel distributed piezoelectric stack actuator (DPSA) by means of mechanical and electrical dispersion. Additionally, dual-redundant PSLs are integrated into the DPSA as backups, providing hardware redundancy for active Fault-Tolerant Control (FTC). Building upon this foundation, an SMO-based fault detector for DPSA is developed to facilitate fault reconstruction. Subsequently, an active FTC strategy, comprising dual-SMO-based fault detectors and a tracking controller, is introduced to effectively manage faults and reallocate control resources. Comprehensive experiments under various fault scenarios are carried out to assess the performance of the SMO-based fault detector and FTC strategy. The results demonstrate that the proposed fault detector and FTC strategy promptly detect faults and efficiently restore the DPSA to a stable state, thereby ensuring effective trajectory tracking even in the presence of faults.

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Section: Introductionmentioning

confidence: 99%

Development and fault-tolerant control of a distributed piezoelectric stack actuator

Zhang,

Ling,

Zhu

2024

Smart Mater. Struct.

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“…The immediate measurement of dynamic flow rate increasingly plays a critical role in modern hydraulic systems, especially in those systems that require instantaneous flow rate feedback like servo-controlled fuel supply system in aircrafts, 1,2 or in those demand high accuracy flow rate control such as the lifting system to control aircraft landing gear, 3 and also in those desire to monitor the high frequency flow ripples at the outlet of the piston pump in the hydrostatic circle. 4 Unlike the positive displacement flowmeter, as a mature instrument, is widely applied for the measurement of steady flow rate because of its high accuracy and insensitivity to fluid medium, usual measuring methods for the dynamic flow rate in hydraulic system are still facing their own challenges in industrial applications.…”

Section: Introductionmentioning

confidence: 99%

An investigation on the dynamic characteristics of a two-dimensional piston flowmeter

Ding

Chen

Zhang

et al. 2022

Advances in Mechanical Engineering

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The immediate measurement of dynamic flow rate is of importance in the modern hydraulic system. Following a brief review and analysis on measuring methods of dynamic flow rate, authors introduced the structure and working principle of a two-dimensional piston dynamic flowmeter. Consequently, a mathematical model was carefully established based on its unique mechanical properties due to the two degrees of working freedom. Meanwhile, the transform function is obtained to describe the dynamic characteristics and used to discuss influences from various design parameters. Finally, a 3D printed prototype was designed and fabricated to measure the sinusoidal flow rate with the frequency range of 1–7 Hz on a calibration test rig. The discrepancy between the experimental and the simulated date is quite foreseeable considering the major influence of low oil bulk modulus due to air bubbles. Although the magnitude reaches −3 dB at 4 Hz, the dynamic characteristics are acceptable and can verify the feasibility of applying the two-dimensional piston flowmeter on the dynamic measurement field. The shortcomings of this prototype are well discussed in the conclusion part to provide guidance to enhance the design ability of next-generation prototypes.

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Analysis of turbine flowmeter’s performance under vibration condition

Guo,

Yuan,

Han

et al. 2025

Measurement

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Excitation of Piezoelectrically Actuated Nozzle-Flapper Valve and Its Potential for Fuel Flowmeter Dynamic Calibration

Cited by 5 publications

References 32 publications

Development and fault-tolerant control of a distributed piezoelectric stack actuator

Development and fault-tolerant control of a distributed piezoelectric stack actuator

An investigation on the dynamic characteristics of a two-dimensional piston flowmeter

Analysis of turbine flowmeter’s performance under vibration condition

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