This study used both time and frequency domain analyses to investigate walking patterns with ankle load in children and adults. Twenty-two children aged 7-10 years and 20 young adults participated in this study. Three levels of ankle load were manipulated: no load, low load (2% of body mass on each side), and high load (4% of body mass on each side). An instrumented treadmill was used to regist...

Motivated by fluid analogies, artificial harmonic potentials can eliminate local m in ima problems in robot path planning. I n this paper, simple analytical solut ions t o planar harmonic potentials are derived using tools f r o m fluid mechanics, and are applied t o two-dimensional planning among multiple moving obstacles. These closed-form solutions enable real-time computation to be readily ...

We proposed voltage-sourced converter (VSC) with Pulse-width modulation (PWM) provides a faster control that is required for flicker mitigation purpose. The voltage regulation in the distribution feeder is improved by installing a shunt compensator. The proposed DSTATCOM is modeled and its performance is simulated and verified for power factor correction and voltage regulation along with neutra...

We describe a new design technique for efficient harmonic resonant rail drivers. The proposed circuit implementation is coupled to a standard pulse source and uses only discrete passive components and no external dc power supply. It can thus be externally tuned to minimize the consumed power in the target IC. A new design technique based on current-fed voltage pulse-forming network theory is pr...

Modern power system networks use active power filters for compensation of harmonic currents generated by non linear loads. In this paper a new method for generating reference currents for harmonic and reactive power compensation is proposed. The proposed method has the advantage that it generates the reference currents irrespective of the supply voltage and load conditions. So the source has to...

Three-Phase four-wire distribution systems are facing severe power quality problems such as poor voltage regulation, high reactive power and harmonics current burden, load unbalancing, excessive neutral current, etc.This creates excessive neutral current both of fundamental and harmonic frequency and the neutral conductor gets overloaded. By integrating phase shifting into an extremely low zero...

The harmonic mitigation using shunt active filters are most widely used in industrial and commercial applications. In this paper a Multi-Level Inverter is considered as DSTATCOM to compensate harmonics. The mathematical modeling of the system and design of the controller using synchronous reference frame theory is also presented. The nonlinear load generally known as diode rectifier load and an...

Considering the fact that load distribution of the flexspline under alternating dynamic loads is complicated, and it’s difficult to measure the stress of the flexspline by experiment, a dynamic simulation model of harmonic gear drives is established to study the intensity of the flexspline in the operating process of harmonic gear drives based on finite element method. In order to decrease the ...

This paper presents for the first time a closed-form solution of dynamic response sigmoid bidirectional functionally graded (SBDFG) microbeams under moving harmonic load and thermal environmental conditions. The formulation is established in context modified couple stress theory to integrate effects microstructure. On basis elasticity theory, nonclassical governing equations are derived by usin...