2 Sustainable and Infrastructure Research and Development Center, Department of Mechanical Engineering, Faculty of Engineering, KhonKaen University, KhonKaen City, Thailand ABSTRACT: This paper presents the optimization of path generating of four-bar linkages using evolution algorithms (EAs). The design problem is assigned to minimize the error between desired and obtained coupler curves. Such ...

In this paper, we examine the modular development of two alternate methods for distributed computation of the forward dynamics simulations of constrained mechanical systems such as four-bar linkages. We exploit the natural spatial parallelism of closed-chain linkages, initially, for the modular development of overall dynamics and subsequently, for the distributed numerical simulation of the dyn...

The current real-time detection of sowing depth has the problems low accuracy and poor reliability. After analyzing movement mechanism monomer parallel four-bar linkage, an improved adaptive Kalman filtering method for is proposed. uses two MPU6050 attitude sensors. difference between rotation angle linkage used as relative to monomer. characteristics up–down translation, changes can be obtaine...

this article contains kinematic and dynamic analysis of the tilting mechanism turnaround charging crane main trolley, conducted with use Mathcad package. The is modeled by a flat link – four-bar linkage. In same time, also using Matlab Simulink environment tools Multibody, which library. These two models were then compared. study work-energy theorem Holonomic constraints equations used.

Certain high speed industrial assembly robots share a peculiar three legged parallel architecture wherein three “hips”, attached to a fixed upper base or “pelvis”, actuate “thighs” connected by “knees” to “shins”. Each shin is a parallelogramic four-bar linkage. “Ankles” are connected to a common end effector “foot” which executes spatial translatory motion. Inverse and direct kinematic analyse...

This study presents an innovative design of a microtab system for aerodynamic load control on horizontal-axis wind-turbine rotors. Microtabs are small devices located near the trailing edge of the rotor blades and enable a rapid increase or decrease of the lift force through deployment of the tabs on the pressure or suction side of the airfoil, respectively. The new system has been designed to ...