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This paper reports electromechanical analysis of basic conductive textile structures designed for wearable sensors. Conductive textile structures usually exhibit two types of resistance: length resistance and contact resistance. Firstly electrical and mechanical properties of unstressed conductive yarn were investigated under practical use conditions. After that three experiments were conducted to...
Recently it is very important to control robot hands more compact and precise sensors in order to increase compensate the grasping capability and to reduce cabling through the finger in the manipulator. As a matter of fact, the miniaturization and cabling harness represents a significant limitation to the design of small sized precise sensor. The main focus of this research is on a robust grasping...
Referring to the engineering practice, this paper optimizes the key design parameters of composite basket handle tied arch bridge with super width and long span. The boom force proportion of main and auxiliary arch is optimized according to the principle that the positive moments equal the negative moments of beams. The section dimension is optimized according to the optimization object that the force-resistance...
This paper experimentally explores thin film micro-contact pairs of Au-Au, Au-Ru and Au-RuO2 through the utilization of thin-film contact resistance and spreading resistance theory. Contacts of various combinations of material pairs, including evaporated Au lower planar contact and sputtered Au, Ru or Au-RuO2 upper hemispherical contact were fabricated and their performance monitored through many...
In this study, implementation of design and simulation programme of a solar energy (photovoltaic panel) supported hybrid electric vehicle was designed, which is considered to be widely used in the 21st century. In the study, DC motor was simulated for a serial hybrid electric vehicle in ICE-generator and photovoltaic panel matlab/simulink environment. Moreover, a .m file was written by calculating...
Nano-indentation manipulator operated in SEM was constructed in order to investigate the electrical contacts on a nanometer scale. Then it is simultaneously possible to observe and control indentation movement and to measure the load force and electrical resistance. Particularly in order to investigate the influence of thick oxide layer on the electrical resistance during indentation, a tin substrate...
The field performance of a separable socket/connector is governed by its ability to maintain the target contact resistance throughout its life. Contact resistance stability and protection against field degradation mechanisms is achieved by maintaining a critical normal force on the contact. With growing socket contact pin counts and package complexities there are challenges with achieving and maintaining...
In this paper, we introduce a novel method to measure the contraction length and force output of Pneumatic Artificial Muscles. Our key innovation is to make the braid of these fiber-reinforced actuators out of insulated wires that form a single electric circuit. Changes in the inductance and resistance of this circuit can be related to muscle contraction length and muscle force. We implemented the...
Haptic perception plays an important role in human life. It provides comprehensive information about the world, especially in in-hand manipulation tasks. For human the in-hand manipulation is an easy work; for robots it is still a challenge. One of its issues lies in the uncertainty of the interaction state. This paper researches robot object interaction from a novel angle, the method is called haptic...
71 maize inbred lines from Jilin Province were selected as experimental material and field split-plot experimental design was adopted to study the relationship between the main traits of rootstock and lodging resistance. The result showed that there was an obvious or an extremely obvious correlation between maize lodging resistance and stalk tension, stalk puncture force, planting density, stem diameter,...
Neurological disorders such as cerebral palsy commonly result in abnormal muscle hyperactivity that negatively effects functional use of the affected limbs. Individuals with cerebral palsy often present with a mix of spasticity and dystonia, and it can be difficult to distinguish between the effects of these types of abnormal tone. Different types of abnormal tone respond differently to treatments...
. In this study, Zr doped NBT-BZT(94Na0.5Bi0.5 TiO3-6BaZrxT1−xO3) (x=0.1) powder was synthesis with solid-state method. The sintering process was carried out at between 1035 to 1180°C in air for 2h. The crystal phase and microstructure of the ceramics were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The influence of Zr content on the piezoelectric and energy...
A wind-propelled tumbleweed rover with a novel structure that is used to explore Antarctica is presented in this paper. Different from other tumbleweed rovers, this one has a double-deck spherical shell and is powered by solar energy. Also, the influence of the tumbleweed's mass and size to the motion performance of the tumbleweed is worked out by feasibility analysis. After that, the structure and...
The problem of controlling towing speed when underwater vehicle using floating cable receiving signal was studied. The force analysis of underwater vehicle was introduced. The relationship between the towing speed and the floating cable depth of underwater vehicle and the receiving expression of floating cable was given.
The influence of the high energy electrons on the wire bonding connections has been investigated. To degrade the devices 6MeV electron source has been employed. The irradiation resulted in both: bonding rupture force and ohmic resistance decrease. Device degradation level was additionally evaluated by means of the electron microscopy inspection.
This paper is concerned with the analysis of an actuation system for load positioning applications based on a pair of antagonistic shape memory alloy wires. In this system, the restoring force required to stretch a wire in martensitic phase can be actively controlled by modulating the power provided to its antagonistic element. For the generation of controlled repeatable motions, this is an undoubted...
This paper proposes a spindle motor control method for self-excited chatter vibration suppression in numerical control (NC) machine tools. In conventional NC machine tools, spindle speed is set to constant value during machining, and the spindle speed is determined according to analysis or operator's experience. The proposed method reduces self-excited chatter vibration by varying spindle speed with...
The electric multiple units (EMU) provide a transport service in the dynamical running environment, which should meet the requirements of safety, punctuality, precise train stopping, energy conservation and comfort simultaneously. However, since pervious manual operation method of EMU is mainly based on a given V-S curve (velocity versus position curve) and drivers' experience, it cannot meet the...
As adhesion coefficient of high speed train (HST) varies with wheel-rail surface condition and running speed, it is thus rather difficult to obtain its accurate value via online measurement, making it non-trivial to design and implement traction/braking control scheme for HST. In this paper, force observers are developed to estimate the adhesion force and the resistance, respectively. Traction/braking...
Regenerative braking has been applied widely in the DC power supply system of urban rail transit. However, as a new mode of transportation, there is no existing research on maglev train. The paper explains the simulation model of traction between mid-to-low speed maglev train and power supply system in detail, and provides regenerative braking simulation computation method through adopting ground...
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