Parameter identification study of frequency response data for a trilayer conjugated polymer actuator displacement model

Blanchard, Emmanuel; Smith, Morton; Nguyen, Chuc Huu

doi:10.1109/aim.2013.6584241

Cited by 4 publications

(5 citation statements)

References 13 publications

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“…From the sensitivity analysis it was concluded that C d affects the behaviour of equation ( 9) more than D. In contrast the diffusion coefficient D shows signs of non-identifiability, which is coherent with the implications from the sensitivity analysis, which is not displayed here for the sake of brevity (similar sensitivity analyses can be found in [17,24]). The sensitivity analysis shows that C d is the most influential parameter on the shape of the Bode plots.…”

Section: Resultssupporting

confidence: 75%

“…Nguyen et al [13,16] has estimated the change of parameters with respect to the applied voltage. Blanchard et al [17] investigated the effect of uncertain parameters for the model used in [16] and compared the parameter estimation results for the full model used in [16] with its reduced model introduced in [16]. Previously, the diffusion coefficient is assumed not to have much effect on the cost function.…”

Section: Introductionmentioning

confidence: 99%

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Identification and control of a trilayer conjugated polymer actuator

Blanchard¹,

Nguyen²

2014

Smart Mater. Struct.

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This paper presents the effect of three uncertain parameters on a recent model of conjugated polymer actuators and implements a robust controller based on the model developed for this actuator. These uncertain parameters are the diffusion coefficient (D), the charge capacitance (C d ) and the charge-to-strain ratio (α), which are difficult to measure directly. The parameter estimation method used in this article is based on a Bayesian cost function, and gives us an insight on how much the estimation can be trusted, which is useful information for the design of controllers. Results indicate that the charge capacitance is the best known parameter and should therefore be designed for with greater confidence in its value, while the controller should be much more robust with respect to the diffusion coefficient and the charge-to-strain ratio. Based on this finding, a robust controller based on the quantitative feedback theory is implemented and compared with a conventional PID controller. This results in an improvement of the control performance.

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Section: Resultssupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Identification and control of a trilayer conjugated polymer actuator

Blanchard¹,

Nguyen²

2014

Smart Mater. Struct.

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“…The estimated values of the parameters used in the model are listed in table 1. The diffusion coefficient D is an uncertain parameter in the model with an expected range of 1 × 10 −14 to 2 × 10 −10 m 2 s −1 [32]. This coefficient tends to decrease as the solvent evaporates.…”

Section: Resultsmentioning

confidence: 99%

Electrochemomechanical constrained multiobjective optimization of PPy/MWCNT actuators

Khalili¹,

Naguib²,

Kwon³

2014

Smart Mater. Struct.

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Polypyrrole (PPy) conducting polymers have shown a great potential for the fabrication of conjugated polymer-based actuating devices. Consequently, they have been a key point in developing many advanced emerging applications such as biomedical devices and biomimetic robotics. When designing an actuator, taking all of the related decision variables, their roles and relationships into consideration is of pivotal importance to determine the actuator's final performance. Therefore, the central focus of this study is to develop an electrochemomechanical constrained multiobjective optimization model of a PPy/MWCNTs trilayer actuator. For this purpose, the objective functions are designed to capture the three main characteristics of these actuators, namely their tip vertical displacement, blocking force and response time. To obtain the optimum range of the designated decision variables within the feasible domain, a multiobjective optimization algorithm is applied while appropriate constraints are imposed. The optimum points form a Pareto surface on which they are consistently spread. The numerical results are presented; these results enable one to design an actuator with consideration to the desired output performances. For the experimental analysis, a multilayer bending-type actuator is fabricated, which is composed of a PVDF layer and two layers of PPy with an incorporated layer of multiwalled carbon nanotubes deposited on each side of the PVDF membrane. The numerical results are experimentally verified; in order to determine the performance of the fabricated actuator, its outputs are compared with a neat PPy actuator's experimental and numerical counterparts.

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“…Similarly, between 2007 and 2021, many infrastructure developments happened in Kenya, affecting Kenya industrial exports to the EAC. The introduction of flagship projects such as the Standard Gauge Railway (SGR) in 2013, Mombasa Port Modernization (2015, the Lamu Port-South Sudan-Ethiopia-Transport (LAPSSET) project (March 2012), and airport and airstrip rehabilitation ( 2015) have all had a significant impact on the ease of trade and goods flow to other EAC countries. The six countries of EAC are the target for study because of their proximity to each other, such that their cross-border trade can be quantified, for example the Uganda market so big that most goods from Kenya go to Uganda.…”

Section: Scope Of the Studymentioning

confidence: 99%

Effect of Infrastructural Development on Kenya’s Manufacturing Exports to EAC Region

Murunga¹,

Reuben²,

Ali³

et al. 2022

IJEBMR

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Manufacturing industries have played a significant role in boosting economic wellbeing in the world through accelerating and maintaining greater productivity growth, boosting employment options for semi-skilled workers, and increasing country competitiveness through exports. Kenya, like many other developing nations, is working to build a strong manufacturing industry. Agriculture and services have been the primary drivers of growth in the country. Historically, the manufacturing sector's contribution to Kenya's economy has remained constant at 10% of GDP, and in 2021 it was around 8.4 percent. As a result, the country has seen an early deindustrialization, as evidenced by the manufacturing sector's contribution to GDP, which was just 8.4% in 2021 and 9.2% in 2016. Boosting manufacturing sector results remains a key priority for Kenya, as evidenced by the slew of planned interventions for the industry that have been created over the years. The government has established Vision 2030, the Kenya Industrial Transformation Programme (KITP), and, most recently, the Big 4 Agenda to modernize the industrial sector. The major goal of this research was to see how infrastructure development (ID) affected Kenya's manufactured exports to the East African Community (EAC). The specific goals were to determine the impact of infrastructure development on Kenya's manufacturing exports to the EAC region. Gravity model was used as the theoretical framework for the study, which is based on the theory of international trade and employs a correlation research design that is ideal for dynamic panel data models. Each country's data for the study variables was obtained from the United Nations Conference on Trade and Development (UNCTAD), Kenya Nation Bureau of Statistics, World Bank development and African Development Bank for six EAC members for the period 2007–2021. Unit root test, Im-Pesaran and Shin, Levin-Li-Chu tests were used in the study. The Im-Pesaran unit root test results at Levels indicated that all the variables except inflation had unit root at levels as indicated by the p-values>0.05, except inflation which had a p-value of 0.0006

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Parameter identification study of frequency response data for a trilayer conjugated polymer actuator displacement model

Cited by 4 publications

References 13 publications

Identification and control of a trilayer conjugated polymer actuator

Identification and control of a trilayer conjugated polymer actuator

Electrochemomechanical constrained multiobjective optimization of PPy/MWCNT actuators

Effect of Infrastructural Development on Kenya’s Manufacturing Exports to EAC Region

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