Data-driven Modelling of Engineering Systems with Small Data, a Comparative Study of Artificial Intelligence Techniques

Mohammadzaheri, Morteza; Ziaeifar, Hamidreza; Bahadur, Issam; Zarog, Mussab; Emadi, Mohammadreza; Ghodsi, Mojtaba

doi:10.1109/icspis48872.2019.9066058

Cited by 5 publications

(7 citation statements)

References 24 publications

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“…(32) and (33) are the results from A S = 1 and ( 24) and (28). In summary, with R S and C S determined with (30) and (31), the following approximate theoretical outcomes are expected:…”

Section: Resultsmentioning

confidence: 78%

“…According to the approximate analytical formulation presented in Section 5, sensing capacitance/resistance calculated with (30) and (31) should result in a sensing voltage amplitude (A S ) of 1 V and the range of charge presented in (32) and (33) for any given sinusoidal excitation voltage with the amplitude of A e . (32) and (33) are the results from A S = 1 and ( 24) and (28).…”

Section: Resultsmentioning

confidence: 99%

“…They are based on models mapping V P to position. A very wide range of research has been carried out to develop such models, due to inherited nonlinearity and the complexity of the V P and position relationship [30][31][32][33][34][35]. Inverted versions of these models have been developed to receive the desired positions and estimate their corresponding V P , which is equal to V e in the absence of sensing elements.…”

Section: Different Types Of Charge Estimators For Piezoelectric Actua...mentioning

confidence: 99%

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Charge Estimation of Piezoelectric Actuators: A Comparative Study

et al. 2023

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This article first reviews the position control of piezoelectric actuators, particularly charge-based sensorless control systems, which often include a charge estimator as a key component. The rest of the paper is about charge estimators for piezoelectric actuators. Two of the most recent/effective types of these estimators utilise either a sensing capacitor (type I in this paper) or a sensing resistor (type II); the latter (and the newer) type is broadly known as a digital charge estimator. Some experimental results in the literature show that, with the same loss in excitation voltage, a considerably higher amount of charge can be estimated with a type II estimator in comparison with a type I estimator; therefore, the superiority of type II estimators was acknowledged. In order to re-assess this conclusion, this paper equitably compares type I and II estimators through analytical modelling and experimentation. The results indicate that type II estimators have only a slight advantage in estimating higher amounts of charge, if both type I and II estimators are designed appropriately. At the same time, type II estimators have disadvantages; e.g., the resistance of type II estimators has to be tuned to suit different excitation frequencies. This research concludes that capacitor-based (type I) charge estimators for piezoelectric actuators, with pertinent design and implementation, can be still the prime solution for many charge estimation problems despite claims in the literature in the last decade.

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“…(32) and (33) are the results from A S = 1 and ( 24) and (28). In summary, with R S and C S determined with (30) and (31), the following approximate theoretical outcomes are expected:…”

Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Section: Different Types Of Charge Estimators For Piezoelectric Actua...mentioning

confidence: 99%

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Charge Estimation of Piezoelectric Actuators: A Comparative Study

et al. 2023

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“…In terms of voltage drop and charge, they are well comparable, and there are ways to systematically deal with the saturation problem, e.g. the methods presented for type iii estimators in [35,40].…”

Section: Resultsmentioning

confidence: 99%

Assessment of Capacitor-based Charge Estimators for Piezoelectric Actuators

Mohammadzaheri

AlSulti

Ghodsi

et al. 2021

2021 IEEE International Conference on Mechatronics (ICM)

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This paper focuses at charge estimators of piezoelectric actuators with a sensing capacitor. They have been claimed in the literature to be outperformed by their newly emerged competitors, charge estimators with a sensing resistor, widely known as digital charge estimators. This paper proposes a digital implementation of capacitor-based estimators and compares them with resistor-based ones both analytically and experimentally. Although, the sensing capacitors are normally bulkier than the sensing resistors used in newer resistor-based estimators; a resistor-based estimator needs to have a variable resistance to deal with different excitation frequencies satisfactorily; this is a major drawback which does not exist in capacitor-based estimators. Both capacitor-based and resistorbased estimators, if designed appropriately, are quite comparable in terms of voltage drop and range of measurable charge. This research concludes that capacitor-based estimators, with right design and implementation, can be still of wide use in nanopositioning.

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“…The resultant FIS still needs to be cross-validated. A widely accepted cross-validation criterion is that the estimation output by the model calculated with the test data (never used in parameter identification directly or indirectly) should be acceptable [33,34]; that is, E t should be small enough. Here is a pseudocode for the development of the FIS:…”

Section: Step 3 -Development Of Fuzzy Inference Systemmentioning

confidence: 99%

Fuzzy Analysis of Resonance Frequencies for Structural Inspection of an Engine Cylinder Block

Mohammadzaheri

Amouzadeh

Doustmohammadi

et al. 2021

Fuzzy Information and Engineering

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A new inspection technique for complex mechanical structures is proposed in this paper, where a fuzzy inference system carries out structural inspection. The inputs to the fuzzy inference system are the elements of a fault signature, an array of numbers prepared with use of below 5 kHz resonance frequencies of faultless and a number of faulty specimens.Advantage: Below 5 kHz resonance frequencies are easier and less expensive to obtain compared to higher frequency ones.Limit: Due to high expenses of experiments, reliable finite element models were alternatively used to obtain resonance frequencies of the faulty specimens.Results: The developed fuzzy inference system in this research accurately located an under-surface fault in an engine cylinder block.

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Data-driven Modelling of Engineering Systems with Small Data, a Comparative Study of Artificial Intelligence Techniques

Cited by 5 publications

References 24 publications

Charge Estimation of Piezoelectric Actuators: A Comparative Study

Charge Estimation of Piezoelectric Actuators: A Comparative Study

Assessment of Capacitor-based Charge Estimators for Piezoelectric Actuators

Fuzzy Analysis of Resonance Frequencies for Structural Inspection of an Engine Cylinder Block

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