Derivative free filtering in hydraulic systems for fault identification

Mahulkar, Vishal; Adams, Douglas E.; Derriso, Mark M.

doi:10.1016/j.conengprac.2011.01.003

Cited by 22 publications

(17 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stability of dynamic error systems (15)(16)(17)(18)(19)(20) can be split into two parts including the stability of unmeasurable part (15) and the other parts (16)(17)(18)(19)(20). In the first step, the stability of the unmeasurable part (15) is considered.…”

Section: Adaptive Super-twisting Observer Designmentioning

confidence: 99%

See 1 more Smart Citation

Adaptive super-twisting observer for fault reconstruction in electro-hydraulic systems

2018

View full text Add to dashboard Cite

An adaptive-gain super-twisting sliding mode observer is proposed for fault reconstruction in electro-hydraulic servo systems (EHSS) receiving bounded perturbations with unknown bounds. The objective is to address challenging problems in classic sliding mode observers: chattering effect, conservatism of observer gains, strong condition on the distribution of faults and uncertainties. In this paper, the proposed super-twisting sliding mode observer relaxes the condition on the distribution of uncertainties and faults, and the gain adaptation law leads to eliminate observer gain overestimation and attenuate chattering effects. After using the equivalent output-error-injection feature of sliding mode techniques, a fault reconstruction strategy is proposed. The experimental results are presented, confirming the effectiveness of the proposed adaptive super-twisting observer for precise fault reconstruction in electro-hydraulic servo systems.

show abstract

Section: Adaptive Super-twisting Observer Designmentioning

confidence: 99%

“…Assumption 1. The perturbation 4 (e z 2 , t), uncertainty ∆(x), and the time derivatives of nonlinear terms φ 1 (y) f 1 and φ 2 (y) f 2 , in the error dynamics (16)(17)(18)(19)(20) are bounded.…”

Section: Adaptive Super-twisting Observer Designmentioning

confidence: 99%

Adaptive super-twisting observer for fault reconstruction in electro-hydraulic systems

2018

View full text Add to dashboard Cite

show abstract

“…The details are presented in [7]. The main hydraulic and geometric parameters identified are given as follows:…”

Section: B System Modelmentioning

confidence: 99%

“…The details of fault identification scheme used and the results obtained are presented in [7]. For continuity, a brief introduction on the methodology is presented below.…”

Section: Fault Identificationmentioning

confidence: 99%

See 1 more Smart Citation

Adaptive fault tolerant control for hydraulic actuators

Mahulkar

Adams

Derriso³

2015

2015 American Control Conference (ACC)

Self Cite

View full text Add to dashboard Cite

Sudden or incipient faults can lead to a degradation in plant performance, impairment of important functions and eventual loss of safety. Thus, the diagnosis and accommodation of incipient faults in dynamical systems is important to meet performance and reliability requirements. This paper outlines a fault tolerant control algorithm for a hydraulic actuator with a faulty piston seal. An experimental setup capable of simulating different kinds of faults observed in hydraulic systems is constructed. A detailed nonlinear model of the experimental setup is developed and validated. A robust nonlinear control strategy is developed for position control of the actuator. A nonlinear stochastic parameter estimation algorithm is also developed and its effectiveness in estimating leakage faults is demonstrated. The nonlinear control strategy is then improved upon by adapting based on the online fault estimate. The experimental results demonstrate the effectiveness of the adaptive fault tolerant control strategy by maintaining a position tracking error below .2mm compared to simple robust control for which the error increases to .5mm as the fault size increases.

show abstract

Adaptive control and signal processing literature survey (No. 26)

2011

Int. J. Adapt. Control Signal Process.

View full text Add to dashboard Cite

In order to keep readers up-to-date, the journal will contain a list of recently published journal articles relevant to the fields of adaptive control and signal processing six times a year. This list is compiled from a wide range of journals. Please note that even though the list has been broadly categorized these classifications are by no means strict, and are there to assist the reader. Please also note that inclusion in the list is not an endorsement of a paper's quality. If you have any suggestions or comments, please

show abstract

Derivative free filtering in hydraulic systems for fault identification

Cited by 22 publications

References 30 publications

Adaptive super-twisting observer for fault reconstruction in electro-hydraulic systems

Adaptive super-twisting observer for fault reconstruction in electro-hydraulic systems

Adaptive fault tolerant control for hydraulic actuators

Adaptive control and signal processing literature survey (No. 26)

Contact Info

Product

Resources

About