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Modeling helps explain the fundamental physics hidden behind experimental data. In the case of material modeling, running one simulation rarely results in output that reproduces the experimental data. Often one or more of the force field parameters are not precisely known and must be optimized for the output to match that of the experiment. Since the simulations require high performance computing...
This paper focuses on external volume and power consumption optimization of an electromagnetic actuator used to move pins in a two-stage variable valve lift component within an automotive engine. This system is designed to change the valve lift at each engine cycle. To achieve this optimization, three models were developed: a magnetic, an electric, and a dynamic model. They evaluate the performances...
In this paper, we present a control method of robotic system using electromyography (EMG) signals collected by surface EMG electrodes. The EMG signals are analyzed using a neuromusculoskeletal (NMS) model that represents at the same time the muscle and the skeleton of the body. It has the advantage of adding external forces to the model without changing the initial parameters which is particularly...
Debarking process is a very important step for many industrial uses of wood. The ring debarker commonly used in sawmills. The variations of the log physical properties, environmental and storage conditions, and debarking operation strongly influence the bark remaining, wood loss and damage percentages on debarked log. In this paper a MPC based ring debarking optimization system is presented. In this...
While we have developed Integrated Optimization which consists of optimization method, modeling method and simulation technology in order to solve practical optimization problems, the high performance of Integrated Optimization has been confirmed through simulations using typical benchmark problems. In this paper, Integrated Optimization with constraints is newly developed and applied to optimal design...
Co-contraction of antagonistic muscles may yield a stable joint movement, force regulation and an increasing joint stiffness. In biomechanics, the force-sharing problem is often solved through minimization of an energetic criterion under given constraints. This criterion has been used in this paper to compute the necessary stimulation parameters as provided by a functional electrical stimulator, during...
Optimization of process parameters is an important aspect in manufacturing engineering. Multi-objective optimization of process parameters is a complex process. Pareto-optimal solution methodologies are widely used now-a-days. The present investigation focuses on the three objective multiple performance optimization of drilling parameters in drilling of composite drilling process. The objective of...
Jet element is the key element of the attitude control system of some aircrafts. The switch time of jet element is critical factor to control precision. In this study, Jet element is investigated and the math model of jet element is constituted in order to decrease the switch time. The factors which effect the switch time are studied. The static and dynamic characteristics of the device were investigated...
The mechanical characterization of cells is important in understanding cellular behavior. A micro-robotic system such as atomic force microscopy (AFM) can be adapted to measure the mechanical behaviors of cells due to its high spatial resolution and high sensitivity. AFM probing experiments on cells were performed with conical tips and sphere-particle-attached tips; the results were analyzed to characterize...
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