In this paper the improvement of a preliminary design process based on an iterative and interactive synthesis is proposed. The problem concerns the determination of dimentionnal parameters of a manipulator able to follow a trajectory deened by a parametric curve under kinematic performances (requested velocity at end-eeector level in a clutured environment). A two level optimization process all...

‘I’/& paper proposes technique for automaticall~ identifying and modeling the kinematic wwtminta of manipulated objects. The existence of wn.druints is established by examination of the forces and torques normal and tangential to the object’s motion. Constraints are modeled as joints tuith wnfigumtion and history dependent forca. To illustmte these concepts, seveml experimental examples are pre...

NW-tending faults in Central Iran are expected to represent dominant dextral components due to their orientation with respect to the northward motion of the Arabian Plate with respect to Eurasia. However, previously published works, as well as the focal mechanism solution of the area's earthquakes, indicate evidence of sinistral kinematic along the major faults in Central Iran. Here we present ...

a r t i c l e i n f o

Objectives: The aim of this study was to extract suitable spatiotemporal and kinematic parameters to determine how Total Knee Replacement (TKR) alters patients’ knee kinematics during gait, using a rapid and simplified quantitative two-dimensional gait analysis procedure. Methods: Two-dimensional kinematic gait pattern of 10 participants were collected before and after the TKR surgery,...

the momentum equation in the kinematic wave model is a power-law equation with two parameters. these parameters, which relate the discharge to the flow area, are commonly derived using manning’s equation. in general, the values of these parameters depend on the flow depth except for some special cross sections. in this paper, improved estimates of the kinematic wave parameters for circular chan...

Introduction we aimed to introduce a 6-universal-prismatic-spherical (UPS) parallel mechanism for the human jaw motion and theoretically evaluate its kinematic problem. We proposed a strategy to provide a fast and accurate solution to the kinematic problem. The proposed strategy could accelerate the process of solution-finding for the direct kinematic problem by reducing the number of required ...

In the mechanisms area, minimization of the magnitude of the acceleration of the center of mass (ACoM) implies shaking force balancing. For a mechanism operating in cycles, the case when the ACoM is zero implies that the gravitational potential energy (GPE) is constant. This article shows an efficient and effective optimum synthesis method for minimum acceleration of the center of mass of a sph...