The lower limb exoskeleton robot is a robot that functions as a walking aid for the lower part of the human body (usually made for stroke and spinal cord injury patients). In this case, the lower limb exoskeleton robot is used for rehabilitation aids for people with spinal cord injuries who have had an accident to the lower part of the human body (lower limbs). This paper presents the design and simulation of the lower limb exoskeleton robot using CAD design software and Matlab/Simulink.
The first step after completing the design of the lower limb exoskeleton robot, we export the file of robot design to the SimMechanics (using first generation). Based on the results of simulation, the PID controller could make each revolution joint of the lower limb exoskeleton robot stable. I Made London Batan is currently the head of the product design and development laboratory, dept.
The effect of vortex vanes on the visualization and temperature distribution of a cocurrent diffusion flame. An experimental study of the effect of adding a prismatic fin to the airflow under a v-wave absorber plate for solar air heater operation. Effect of silicon crust on blades on the efficiency of a steam turbine in a geothermal power plant.
The effects of the conductivity of the material on the dynamic behavior of the multiple droplets impacting the hot surface. The investigation of the effect of the insertion of the inlet disruptor on the flow pressure drop in a 90° square elbow. Experimental study on the effect of the heating temperature on the bioethanol injector on the jetting characteristics for application on the Sinjai-150 engine.
Effect of two-stage gasifier on biomass gasification downstream on gasifier performance. Analysis of the effect of a single double input cylinder with a single output generator on hydraulic performance. The influence of the content of sisal fibers in a biocomposite product from the injection molding process on its mechanical properties.
The effect of diffusion treatment on the mechanical properties of hot-dip aluminum coating on AISI P20 steel. Effect of alkali treatment on the flexural strength of bamboo fiber reinforced styrofoam-modified polyester resin. Effect of fly ash volume fraction on the shear strength of adhesively bonded steel joints.
Optimizing vapor compression refrigeration system (VCRS) performance by controlling the evaporator motor fan.
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However, as time passes, the exoskeleton robots of the lower limbs are no longer reserved for stroke and paraplegic patients, some of them are made to military requirements or the need to lift heavy things. In this case, the lower limb exoskeleton robot is used for rehabilitation aids for people with paralysis who suffered an accident on the lower part of the human body (lower limb). The first step after the design of the lower limb exoskeleton robot is completed, we export the file of robot design to the SimMechanics (with the first generation).
After obtaining the results of the export file, we add a proportional-integral-derivative (PID) controller for each rotary joint. Improving the hydrodynamic performance of a heated plate mounted with a perforated concave delta winglet vortex generator in an air flow channel. Department Department of Mechanical Engineering, Diponegoro University, Semarang, Indonesia Department of Manufacturing Engineering, Gyeongsang National University, Jinju, Korea.
Compact heat exchangers are widely used in power plants, air conditioning and refrigeration, the chemical industry and the automotive industry. The passive method of using a vortex generator (VG) is one of the effective methods to increase the heat transfer rate. But the addition of a vortex generator (VG) on the gas side increases the pressure drop, which means the hydrodynamic performance degrades.
Therefore, the aim of this study is to reduce the pressure drop on the airflow over a heated plate placed with a VG concave wing in the duct. VGs with a hole diameter of 5 mm were designed on three variations of the number of holes. The angle of incidence of the air flow on the leading edge of the vortex generator of the concave delta airfoil was maintained at 15°.
Heat transfer coefficient and pressure drop for a heated plate mounted by a concave delta winglet vortex generator with/without holes were compared to the heated plate without a vortex generator (baseline). The results show that the convection coefficient values for three hole vortex generators decrease by 1.07% compared to no holes. The pressure drop for three-hole vortex generators was reduced by 25.65% compared to those without holes.
Sidewall heating and cooling create alternately oriented vertical natural convection boundary layers that draw fluid from inside the cavity and discharge it at the top and bottom of the cavity. At full development, the flow is nearly steady with natural convective boundary layers maintaining a stable stratification inside the cavity, and the heat content fluctuates around a zero mean value. The finite element method (FEM) in the analysis of the stenting process can reveal a lot of information that cannot be accessed in the experiment.
In the case of stent simulation, the verification of the FEM procedure is more important than the validation of FEM results because of the difficulties of validating FEM results using an experimental method. To know the influence of the time-hardening formulation, three different periods of creeping time with the same. The study found that the creep behavior tends to affect the nominal radii of a flexible stent (sinusoidal stent), but does not affect the stent with a rigid structural geometry (Palmaz stent).
Teo et al., Optimisation de la conception d'un stent coronaire par analyse par éléments finis, Am Soc Artif Inter Organs. Laboratoire des Sciences du Numérique de Nantes, 1 Rue de la Noë, Nantes 44300, FRANCE Ecole Centrale de Nantes, 1 Rue de la Noë, Nantes 44300, FRANCE. Institut Mines-Télécom Atlantique, 4 Rue Alfred-Kastler, Nantes 44307, FRANCE Centre National de la Recherche Scientifique (CNRS), Nantes, FRANCE.
The robot cell, consisting of a 6-axis industrial manipulator and an actuated positioner, is kinematically redundant with respect to the task under consideration. To confirm the validity of the developed methodology, experimental results related to the automation of thermoplastic fibers are presented. High temperature oxidation of low carbon steel with and without Al coating in an atmosphere containing burning ethanol: AIP Conferenc.
High temperature oxidation of low carbon steel with and without an Al coating in an atmosphere containing burnt ethanol. Experimental results show that water vapor and hydrogen produced by burning ethanol in the atmosphere induces an increase in weight gain and metal loss in bare steel. The growth of the iron oxide layer is attributed to the large amounts of dissolved hydrogen in the iron oxide layer leading to rapid oxidation kinetics.
