State space mathematical modeling for mechanoelectrical transduction of Polyvinyl Chloride (PVC) based sensors

2021 ◽  
Author(s):  
Justin Neubauer ◽  
Kwang Jin Kim
Keyword(s):  
Mathematical Modeling ◽  
State Space ◽  
Polyvinyl Chloride ◽  
Mechanoelectrical Transduction

scholarly journals Simulation of several flying situations of paragliders

2021 ◽  
Vol 15 (1) ◽  
pp. 79-89
Author(s):  
Thanh Xuan Nguyen ◽  
Phuong Thi-Thu Phan ◽  
Tien Van Pham
Keyword(s):  
Mathematical Modeling ◽  
Differential Equations ◽  
Modeling And Simulation ◽  
Ordinary Differential Equations ◽  
State Space ◽  
Simulation Modeling ◽  
Time Varying ◽  
Gravity Forces

Paragliding is an adventure and fascinating sport of flying paragliders. Paragliders can be launched by running from a slope or by a winch force from towing vehicles, using gravity forces as the motor for the motion of flying. This motion is governed by the gravity forces as well as time-varying aerodynamic ones which depend on the states of the motion of paraglider at each instant of time. There are few published articles considering mechanical problems of paragliders in their various flying situations. This article represents the mathematical modeling and simulation of several common flying situations of a paraglider through establishing and solving the governing differential equations in state-space. Those flying situations include the ones with constant headwind/tailwind with or without constant upwind; the ones with different scenario for the variations of headwind and tailwind combined with the upwind; the ones with varying pilot mass; and the ones whose several parameters are in the form of interval quantities. The simulations were conducted using a powerful Julia toolkit called DifferentialEquations.jl. The obtained results in each situation are discussed, and some recommendations are presented. Keywords: paraglider; simulation; modeling; state-space; ordinary differential equations; Julia; DifferentialEquations.jl

scholarly journals A Complete Mathematical Modeling, Simulation and Computational Implementation of Boost Converter Via MATLAB/Simulink

2019 ◽  
Author(s):  
Viswanatha V
Keyword(s):  
Mathematical Modeling ◽  
Transfer Function ◽  
State Space ◽  
Simulation Analysis ◽  
Boost Converter ◽  
Step Response ◽  
Circuit Modeling ◽  
Space Modeling ◽  
Modeling Techniques ◽  
Simulation Results

This paper describes mathematical modeling techniques, simulation and implementation of boost converter. Four modeling techniques such as circuit modeling, mathematical circuitry modeling, and transfer function modeling and state-space modeling. Each modeling method is developed and implemented in MATLAB and Simulink environment. Circuit modelling is also done in PSIM tool. From the simulation results it is clear that capacitor voltage waveform which is a state variable gives identical response in all modeling techniques; state-space, mathematical circuitry, circuit and transfer function modeling approaches. Simulation results of all models perfectly overlapping each other and also settling time is very less in circuit modeling and transfer function modeling which is more desirable .Stability analysis ;bode plot ,pole-zero plot and step response are carried out using transfer function modeling .The offered models helps to the expansion of boost converter design, simulation ,analysis and educational tool[1].

Stability Analysis of Quadrotor using State Space Mathematical Modeling

2020 ◽  
Vol 33 ◽  
pp. 4040-4043
Author(s):  
N. Suthanthira Vanitha ◽  
L. Manivannan ◽  
T. Meenakshi ◽  
K. Radhika
Keyword(s):  
Mathematical Modeling ◽  
Stability Analysis ◽  
State Space

Mathematical Modeling of the Membrane Concentration of Whey by the State Space Method

2020 ◽  
Vol 13 (4) ◽  
pp. 275
Author(s):  
Boris Lobasenko ◽  
Dmitry Borodulin ◽  
Roman Kotlyarov ◽  
Yana Golovacheva ◽  
Igor Bakin
Keyword(s):  
Mathematical Modeling ◽  
State Space ◽  
The State ◽  
State Space Method ◽  
Space Method ◽  
Membrane Concentration

A Study of Mechanoelectrical Transduction Behavior in Polyvinyl Chloride (PVC) Gel as Smart Sensors

2021 ◽  
Author(s):  
Justin Neubauer ◽  
Zakai Olsen ◽  
Zachary Frank ◽  
Taeseon Hwang ◽  
Kwang Jin Kim
Keyword(s):  
Polyvinyl Chloride ◽  
Electroactive Polymers ◽  
Initial Contact ◽  
Sensitive Material ◽  
Polarity Inversion ◽  
Mechanoelectrical Transduction ◽  
Compressive Loads ◽  
External Stimuli ◽  
Robotic Applications ◽  
Creeping Motion

Abstract Polyvinyl chloride (PVC) gels are soft electroactive polymers being researched for soft robotic applications. Sensing properties of these electroactive polymers have not been investigated in detail in regard to fundamental mechanoelectrical transduction behavior, but this smart material has been shown to exhibit a detectable response to external stimuli. This study shows PVC gels to be an extremely sensitive material when undergoing mechanoelectrical transduction and explores some response dependencies and proposes a theoretical framework for mechanoelectrical transduction within the gel. The work presented here also uncovers a very interesting phenomena under extremely low compressive loads during the initial contact with the gel. This phenomenon is attributed to a surface tension creeping motion onto the loading surface with an accompanying polarity inversion in the sensing signal relative to fully loaded gels in compression. Experimental work on hysteresis was also completed showing very little memory in steady state mechanoelectrical response to repeated stepped loading cycles. This study demonstrates the mechanoelectric ability of PVC gels to perform in sensing experiments and acts as a fundamental framework to further broaden the applications of PVC gel sensors.

A Replica Technique for the Inside Surfaces of Small Diameter Pipes and Tubes

1967 ◽  
Vol 25 ◽  
pp. 352-353
Author(s):  
T. G. Gregory
Keyword(s):  
Polyvinyl Chloride ◽  
Small Diameter ◽  
Replica Technique ◽  
Tube Size ◽  
Inside Diameter ◽  
Complete Inspection ◽  
Operating Limits

A nondestructive replica technique permitting complete inspection of bore surfaces having an inside diameter from 0.050 inch to 0.500 inch is described. Replicas are thermally formed on the outside surface of plastic tubing inflated in the bore of the sample being studied. This technique provides a new medium for inspection of bores that are too small or otherwise beyond the operating limits of conventional inspection methods.Bore replicas may be prepared by sliding a length of plastic tubing completely through the bore to be studied as shown in Figure 1. Polyvinyl chloride tubing suitable for this replica process is commercially available in sizes from 0.037- to 0.500-inch diameter. A tube size slightly smaller than the bore to be replicated should be used to facilitate insertion of the plastic replica blank into the bore.

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