Design sensitivity analysis of nonlinear structures subjected to thermal loads

Parente, Evandro; Sousa, João Batista M.

doi:10.1016/j.compstruc.2007.08.002

Cited by 13 publications

(6 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many scholars paid more attention to system uncertainty. Thus, sensitivity theory becomes an important branch of control technology (Bode, 1945; Cruz and Perkins, 1964; Parente and De Sousa, 2008). Sensitivity theory is an effective method to quantitatively analyze the influence degree of parameter perturbations on the system performance.…”

Section: Sensitivity Analysis For Parameter Perturbationsmentioning

confidence: 99%

Stability and performance comparison analysis for linear active disturbance rejection control–based system

Zhao

et al. 2022

Transactions of the Institute of Measurement and Control

View full text Add to dashboard Cite

This paper investigates the stability and performance of the linear active disturbance rejection control (LADRC)–based system with uncertainties and external disturbance via transfer functions and a frequency-domain view. The performance of LADRC is compared with the state-observer-based state feedback control (SOSFC) and state feedback control (SFC). First, the transfer functions and the error transfer functions for LADRC, SOSFC, and SFC are studied using the state-space method. It is proven that the LADRC-, SOSFC-, and SFC-based closed-loop systems have the same transfer function from the reference input to the output and achieve the same control effects for the nominal system. Then, it is proven for the first time that the LADRC has a better anti-interference ability than the SOSFC and SFC. Besides, the asymptotic stability condition of LADRC-based closed-loop system considering large parameter perturbations is given first. Moreover, the sensitivity analysis of the closed-loop system is carried out. The results show that the LADRC has stronger robustness under parameter perturbations. According to the results, we conclude that the LADRC is of great disturbance rejection ability and strong robustness.

show abstract

Section: Sensitivity Analysis For Parameter Perturbationsmentioning

confidence: 99%

Stability and performance comparison analysis for linear active disturbance rejection control–based system

Zhao

et al. 2022

Transactions of the Institute of Measurement and Control

View full text Add to dashboard Cite

show abstract

“…It has been used as an important tool in many areas of knowledge: Flow through porous media (Iglesias and Dawson 2007), environmental flow (Khemka et al 2006); life insurance contracts (Christiansen 2008); heat transfer (Parente and Sousa 2008) and mass transfer (Vasconcellos et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of Time Dependent Settlements in Hydraulic Fills

2010

View full text Add to dashboard Cite

This paper reports some numerical investigation carried out on hydraulic fills. A methodology based on the numerical solution of the governing equation via the finite volume method is introduced and tested, and proven to be very efficient. Typical dimensional performance curves are obtained and the influence of governing parameters is discussed. A sensitivity analysis is carried out in order to characterize the influence of the numerous parameters used to simulate the time dependent settlement in hydraulic fills on the outputs of the model.

show abstract

“…There are many methods for sensitivity analysis, which can be classified into sensitivity function in time domain, frequency domain and performance-index sensitivity, and each sensitivity analysis method has its own advantages and application range [21]. Sensitivity analysis theory is widely used in mechanical design, power system, water conservancy system and so on [22][23][24]. In the application of hydraulic system, trajectory sensitivity analysis method in time domain is the most commonly used, which can be used for nonlinear systems with time-varying parameters.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Parameter Sensitivity Analysis of Valve-controlled Helical Hydraulic Rotary Actuator System

Zhang

Gan

et al. 2021

Preprint

View full text Add to dashboard Cite

As a kind of hydraulic rotary actuator, helical hydraulic rotary actuator has the excellent characteristics of large angle, high torque and compact structure, which has been widely used in various fields. However, the core technology is in the hands of several companies and has not been disclosed, and the relevant reports are mostly limited to the component level. From the perspective of designing the driving system, the dynamic characteristics of the output when the helical rotary actuator is applied to the closed-loop system are explored. There are two main problems to be studied: one is to establish a reliable mathematical model, and the other is to consider the influence of system parameter perturbation on the output in practice. In this paper, firstly, the dynamic model of valve-controlled helical rotary actuator angle closed-loop system is derived in detail, which has never been reported in the existing literature. Then, the sensitivity analysis of 23 main parameters in the model with perturbation of 10% is carried out under nine working conditions. Finally, the system dynamics model and the sensitivity analysis results are verified by the prototype experiment and co-simulation, which shows the reliability of the theoretical results in this paper.

show abstract

Design sensitivity analysis of nonlinear structures subjected to thermal loads

Cited by 13 publications

References 37 publications

Stability and performance comparison analysis for linear active disturbance rejection control–based system

Stability and performance comparison analysis for linear active disturbance rejection control–based system

Sensitivity Analysis of Time Dependent Settlements in Hydraulic Fills

Modeling and Parameter Sensitivity Analysis of Valve-controlled Helical Hydraulic Rotary Actuator System

Contact Info

Product

Resources

About