The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
During the recent years, there have been many studies implemented on the automatic diagnosis of Alzheimer's Disease (AD) using different methods. The focus of most of these studies has relied upon the detection of AD from neu-roimaging data. However, recognizing symptoms early as much as possible(Pre-detection) is crucial as disease modifying drugs will be most effective if administered early in the...
In this paper, a redundantly actuated chewing robot with two higher kinematic pairs (HKPs) is presented, which can be used in performance test and evaluation of denture material. The robot has six actuators, but only has four degrees of freedom, due to constraints of two HKPs which mimic two temporomandibular joints (TMJs) of human. Quasi-static force analysis in occlusion status is performed to calculate...
Epidural space insertion is a common needle surgery for regional anaesthesia, such as labor pain relief and lower extremity surgery. But detection of needle entry into epidural space can be difficult, which currently is highly depended on a hand-feeling skill named loss-of-resistance (LOR). To provide the clinicians with a better real-time visual signal, this paper presents a novel tip force sensing...
Soft actuators have allowed for a variety of innovative applications, however, the mathematical modeling of soft actuators is still in its infancy. In this paper, we present a multi-cavity composite soft pneumatic actuator constitutes of multiple layers with embedded multiple air channels. The principle of operation of this actuator is comprehensively analyzed and described through building the analytical...
Standard control laws have unique parameters that yield a certain response according to which model they are implemented on. Changes in the model will result in changes in the response, yielding the need for new ideal parameters. Adaptive controllers have the advantage of reducing the number of control parameters to be chosen by the pilot. Reducing this number of parameters can be beneficial, as obtaining...
In this paper, the control scheme of a co-axial two-wheel mobile robot by human operation is developed. Two joysticks are introduced considering easy and intuitive operation for the user. Common and differential mode of the tilt angle of joysticks correspond to translational and rotational motion respectively. In order to control translational motion of a two-wheel mobile robot, two kinds of controller,...
Wireless Technology plays a significant role in current world. Many applications use wireless sensor network for health monitoring. One of the examples is the application to measure muscle response or electrical activity in response to a nerve's stimulation of the muscle. The development of wireless Electromyography (EMG) for remote monitoring of muscle activities is one of many vital parts in the...
Target chasing control of autonomous mobile robots is important for both civilian and military applications. Efficiency and stability are two important factors in chasing problem. The robot is expected to chase the target quickly to save time. Besides, the driving velocity and direction of the mobile robot should be changed smoothly to avoid wheel slippage or mechanical damage during the chasing process...
An ideal steering characteristic is of great importance to improve the handling stability of four-wheel independent steering (4WIS) electric vehicle. For this reason, we proposed in this paper to use LQR optimal control theory to control variable gear ratio steering control through rear active steering. To realize great steering gain (i.e., quick response to handling) at low speeds and small steering...
We demonstrate the application of predictive functional control to a real-life position-control problem of a mechatronic system using a state observer-based internal model (PFC-OBIM). In the literature, the control method has been shown to be effective in simulation. However, no experimental validation has been conducted so far. Hence, we conduct a few experimental tests using a single-axis table...
Control moment gyro (CMG) that driven by traveling wave traveling wave hollow ultrasonic motor have the closed loop stability control and multi objective angle fixed angle locking precision in large speed range demand. In this paper, a mathematical model of the control moment gyro system driven by traveling wave type hollow ultrasonic motor is established. Then taking into account the nonlinear characteristics...
This article describes the design and process of a 3D Mini Camera Lens to be utilised in multi-purpose 3D stereo reconstruction on computers, mobile devices and robots. It can also be useful for various tasks including demonstration, knowledge-sharing, online programming, database sharing, results comparison in the stereo vision research community, and recreation used by non-specialists. In contrast...
A real-time remote data acquisition and process monitor system based on ARM and Ethernet is designed for automatic filling line. The whole scheme of the system is analyzed and the hardware and software design of the system is discussed in details. Though obtaining intuitive image video information and analyzing the real-time display data or history date which come from the production line, people...
As a new type of flexible drive, pneumatic artificial muscle (PAM) has been widely concerned in various fields, but the research on the dynamic characteristics is difficult because of its strong nonlinearity and hysteresis. In this paper, the effects of system hardware configuration and control algorithm on the dynamic displacement characteristics of the double parallel Mckibben artificial muscles...
Stabilizing the flow of fixtures is one of the complex problems for the current manufacturing systems. A novel Decision Support System (DSS) is proposed to systematically plan fixture using Fuzzy Case-Based Reasoning (FCBR), Fuzzy Analytic Hierarchy Process (FAHP) and Discrete-Event Simulation (DES). Cases are represented using an Object-Oriented (OO) method. FCBR and FAHP are combined for case retrieval...
Multi-channel visual reality system based on PC cluster can give users strong sense of immersion. This paper discusses the synchronous problem in multi-channel visual reality system. For the viewpoint synchronization, this paper brings forward a message communication mechanism based on change of user operating status. This mechanism can reduce the message amount by a large margin, so the message block...
Magnetic shape memory alloy (MSMA) has recently emerged as a new type of multifunctional material exhibiting excellent performance as fast response and large strain. Constitution equations are derived based on the magnet-strain effect of MSMA. Experiments are conducted to explore the magnetic field induced strain, and data are applied to establish neural network based models to build the nonlinear...
With the development of the intelligent home service robot, autonomous-learning applied in the field of robot has aroused considerable attentions of researchers. Home service robot is hoped to help his master to do so many trivial. Nowadays, robot already can learn a new skill autonomously rather than set by programs. However, when meeting multi-task at the same time, there are still so many things...
In this study, a mask, which is made of a pair of fan-shaped closed-cell foam barriers, is used to elongate the beam width in the focal plane of a shock wave lithotripter, generating a steerable and non-axisymmetric acoustic field, and a beam steering strategy is proposed to revolve the elongated acoustic focal zone (beam), concomitant with the mask, and allows the sound wave energy to focus on moving...
The sag of power transmission line is of great significance to the safe operation of the whole transmission systems, and is also an important indicator of the line design. A new method to measure the sag of the transmission line was presented in this paper, which was based on the laser ranging and the image processing technology. Firstly, the contrast enhancement and threshold segmentation were used...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.