Applied Mechanics and Materials Vol. 245

Abstract: Currently in neurorehabilitation robotic devices are mostly applied for rehabilitation of the motor functions of the lower and upper extremities. Even if in recent research autonomous and humanoid robots are being used for cognitive rehabilitation robot medicated therapy predominately supports relearning of motor functions for subjects suffering from stroke, spinal cord injury or other neurological conditions. This review paper provides a summary of the main features and applied methods, and presents some examples to outline the large diversity of currently used devices. Future challenges for rehabilitation robotics to reach full clinical acceptance are clear answers regarding the optimal dosage of movement therapy and right inclusion/exclusion criteria for specific treatments.

Abstract: We have three generations of persuasive technology devices used in health care, up to now. The IS-ACTIVE system –Inertial Sensing System for advanced Chronic Condition Monitoring and Risk Prevention is a third generation system, using IT, inertial sensors, sensors for physiological parameters and a feedback device in order to improve the physical activity and subsequently, the health state and the quality of life for people affected by chronic obstructive pulmonary disease and other respiratory and cardiovascular disabling medical conditions.

Abstract: The paper presents methods of improving the hybrid force-position dynamic robot control using fuzzy logic for the error control. The implementation of the open architecture control system for robots using fuzzy application allows for the control of the hybrid position and force in Cartesian coordinates through real time processing of the Jacobean matrix obtained out of forward kinematics using the Denevit-Hartenberg method and calculating the Jacobean inverted matrix for control in closed loop. The effectiveness of various fuzzy control structures in controlling the force-position of the robot or mechatronics actuators is presented.

Abstract: The most important things in the dynamic research of industrial robots are the vibration behavior, the transfer function and the vibration power spectral density between some of the robot joints and components. In the world this research is made without the assisted research. In each of the study cases in this paper was used the proper virtual Fourier analyzer and was presented one new method of the assisted vibration analysis. With this research it is possible the optimal choosing the base modulus type to avoid the frequencies from the robot spectrum. In the manufacturing systems, the most important facts are the vibration behavior of the robot, the compatibility with some other components of the system. All the VI where achieved in the LabVIEW soft 8.2 version, from National Instruments, USA. This method and the created virtual LabVIEW instrumentation are generally and they are possible to apply in many other dynamic behavior research.

Abstract: the work paper presents the auto-pilot solution adopted for an unconventional unmanned air vehicle (EADFP) based on a simplified algorithm implemented on a micro controller hardware configuration.

Abstract: Abstract. The bio-composites materials are very important for a lot of industry and life domains, particularly in the aeronautic industries and medicine, in orthopedics. Titanium and its alloys are most widely used, due to their mechanical properties similar to bone tissue. The sandwich structures are very light, they have a high stiffness in flexion and very good thermal characteristics. For the compressed sandwich structures, risks of buckling are higher than the conventional compressed structures, limited by a critical value of the applied force, then the deformations grow in importance and uncontrolled manner. We try to calculate the critical buckling force by the method presented in [2].

Abstract: The paper presents an analytical method to approach the choice of integration time and gain values when a thermal camera with starring detector is calibrated. Using a simulation interface made in LabVIEW, the authors reveal the dependence between gain and integration time when some parameters as background and target temperatures or atmospheric transmission are changed.

Abstract: This paper is focused on computational modeling of an interaction of dental implant with mandible bone. It describes creation of computational model including model of geometry, materials, loads and constraints. There is a comparative stress-strain analysis of the levels of cancellous bone model. Computations are performed with the use of finite element method. Results show differences between the model which includes trabecular architecture of cancellous bone tissue and the model with non-trabecular cancellous bone tissue. For better description of the processes in bone tissue and at the interface between bone tissue and implant, it is necessary to create the computational model on the highest possible level, i.e. with the trabecular bone tissue.

Abstract: The importance of joint integrity is a priority of the hand and wrist joints mobility is crucial for any individual. Motion control is achieved by the somatic nervous system composed of those formations which are designed to integrate body in the external environment, to achieve body relationship with this environment. Dynamic biomechanical models serve for quantitative analysis required in planning surgery on tendons [6] or to assess the transfer of nervous signals controlling the effectors [5]. Some others are dedicated to model various operations for design and implementation of the prosthetic components [13]. Recent models have approximately the same configuration: changing dimensional structure is not taken into account, but only the resulting physiological movement and rotation are analyzed for a single predominantly degree of freedom around a defined axis. Many scientists have tried over time to reproduce the hand kinematics, but not so many are those who have tried to design a guiding hand mechanism to reproduce its natural movements. The aim of this paper is to achieve the cinematic scheme of such a mechanism, able to lead fingers on path as possible as close to their natural movements.