Designing a Simple Electromechanical Device for Using to Automatically and Non–Invasively Diagnose Deep Tissue Pathology Such as Psoriasis

By placing a soft, sensitive device on the skin, you may be able to quickly detect non-invasive skin disorders in real time. A research team led by a scientist from California South University (CSU) has designed a simple electromechanical device that can be used to automatically and non-invasively diagnose deep tissue pathology such as psoriasis. These findings form the basis for future applications in the clinical evaluation of skin cancers or skin diseases. Keywords: Cancer; Cells; Tissues; Tumors; Prevention; Prognosis; Diagnosis; Imaging; Screening, Treatment; Management

ACAN SPEED, ATTACK ANGLE AND CUTTING FORCE, AFFECT THE QUALITY OF SUGARCANE HARVEST?

The base cut of cultures is one of the most studied parameters, and the variables involved in this process should be better evaluated under controlled conditions. The aim of this study was to evaluate, using an electromechanical device, under controlled conditions, the influence of the cutting angle and the machine's translation speed on the impact force generated on sugarcane stalks in mechanized harvesting. The study was carried out at the Nempa - Center for Testing of Agroforestry Machines and Tires (NEMPA) at UNESP/Botucatu. For the tests, the Sugarcane Basal Cut Testing Device (BCTD) was used. The collected data were evaluated using multiple linear regression analysis, using the stepwise method. The results showed that the angulation of the cutting blades is the most significant variable in relation to the impact force generated in the cutting process of sugarcane stalks, this research also managed to assess that the intensity of the angulation effect is more than 2 times greater than the effect generated by the displacement speed in the mechanized harvesting process.

A Modernized Screening Technology for Cancer Non-Invasive Biodiversified Biosensors

By placing a soft, sensitive device on the skin, you may be able to quickly detect non-invasive skin disorders in real time. A research team led by a scientist from California South University (CSU) has designed a simple electromechanical device that can be used to automatically and non-invasively diagnose deep tissue pathology such as psoriasis. These findings form the basis for future applications in the clinical evaluation of skin cancers or skin diseases. Keywords: Cancer; Cells; Tissues, Tumors; Prevention, Prognosis; Diagnosis; Imaging; Screening; Treatment; Management

A Modified HOSM Controller Applied to an ABS Laboratory Setup with Adaptive Parameter

The antilock braking system (ABS) is an electromechanical device whose controller is challenging to design because of its nonlinear dynamics and parameter uncertainties. In this paper, an adaptive controller is considered under the assumption that the friction coefficient is unknown. A modified high-order sliding-mode controller is designed to enhance the controller performance. The controller ensures tracking of the desired reference and identifies the unknown parameter, despite parametric variations acting on the real system. The stability proof is done using the Lyapunov approach. Some numerical and experimental tests evaluate the controller on a mechatronic system that represents a quarter-car model.

Automatic Electromechanical Perturbator for Postural Control Analysis Based on Model Predictive Control

Objective clinical analyses are required to evaluate balance control performance. To this outcome, it is relevant to study experimental protocols and to develop devices that can provide reliable information about the ability of a subject to maintain balance. Whereas most of the applications available in the literature and on the market involve shifting and tilting of the base of support, the system presented in this paper is based on the direct application of an impulsive (short-lasting) force by means of an electromechanical device (named automatic perturbator). The control of such stimulation is rather complex since it requires high dynamics and accuracy. Moreover, the occurrence of several non-linearities, mainly related to the human–machine interaction, signals the necessity for robust control in order to achieve the essential repeatability and reliability. A linear electric motor, in combination with Model Predictive Control, was used to develop an automatic perturbator prototype. A test bench, supported by model simulations, was developed to test the architecture of the perturbation device. The performance of the control logic has been optimized by iterative tuning of the controller parameters, and the resulting behavior of the automatic perturbator is presented.

Dynamics of a discontinuous coupled electro-mechanical system oscillator with strong irrational nonlinearities and with two outputs

The dynamics of the nonlinear electromechanical device, consisting of a mechanical part with two outputs and an electrical part which acts as the server is strongly investigated in the present work. The mechanical part consists of two nonlinear oscillators with strong irrational nonlinearities having smooth or discontinuous characteristics, where nonlinearity is just due to the inclination of springs, the geometric configuration, which are both elastically coupled. While the electrical part is the Rayleigh equation. By using the Lagrangian formulation, the model equations are established and used to investigate the equilibrium points and their stabilities. Nest by using the multiple time scales method, the analytical solutions are found both for the case of large amplitude and the weak amplitude, leading to interesting bifurcation sets of the equilibria by varying the control parameters, the inclination angles and driven frequency. Finally, numerical investigations of the exact equation of the system are used to justify the validity of analytical results and to find new phenomena such as chaotic impulses, chaotic bursting and the train of kink signal generations.

Methods for improving the energy efficiency of the installation with a discrete secondary part

Hydrodynamic cavitation, created by the intensive movement of the secondary discrete part in an electromechanical device, is the most important energy effect in the processing of petroleum products. The presented work contains and summarizes the results of the study of the main parameters of cavitation processing, including the geometric parameters of the elements of the secondary discrete part, the speed and trajectory of the secondary discrete part, as well as the parameters of the processed raw materials. It is established that to achieve an intense cavitation field, it is necessary, depending on the parameters of the processed raw material (its rheological properties), to maintain the optimal temperature and ensure the speed of movement of the elements of the secondary discrete part.