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.
When doing femur fracture reduction surgery, both patient and surgeon are exposed to a great amount of radiation, which is harmful to their health. Computer assisted orthopaedic surgery (CAOS) is a less invasive approach for its ability to reduce the usage of image intensifier. Various robots have been developed for femur fracture reduction surgery. Most of these robots are beared on serial architecture...
A wheelchair-mounted robotic arm (WMRA) system was designed and built to meet the needs of mobility impaired persons with limitations of upper extremities, and to exceed the capabilities of current devices of this type. The control of this 9-degree-of-freedom system expands upon conventional control methods and combines the 7-DoF robotic arm control with the 2-degree-of-freedom power wheelchair control...
In this paper an innovative model architecture is proposed based on the fusion of a multi auto-adjusted TSK fuzzy logic classifier and a signal convolver classifier to model physical actions and behaviours without any giving prior knowledge of the modeled activities. Three different hypotheses are being tried to investigate such as the classification accuracy of 3D time series activity data, the discrimination...
A surgical assistive device for the Sleeve Gastrectomy surgery is presented in this paper. Sleeve Gastrectomy is based on reducing the size of the stomach. The purpose of this instrument is to assist surgeons obtain accurate remnant stomach volume. The paper presents the hardware and interface design of the device. The device is composed of an inflatable cylinder to be inserted in the stomach and...
Physiological tremor is one of the main cause for human imprecision during micro surgery. Accurate filtering of physiological tremor is extremely important for compensation in robotics assisted micro-surgical instruments/procedures. A study on surgeon's tremor is conducted and the characteristics of the tremor band and its nature are analyzed. An adaptive filtering approach is developed to estimate...
Good communication among workers helps make comfortable atmosphere in an office and contributes to the increase company productivity. Therefore, relationship between workers is an important information the manager needs to know by examining the worker's comfort level in an office environment. Moreover, the quantified information of the human relationship is useful for robots to provide services to...
The main objective of this research work is to classify measurements units in optimal measurement environments in the power system network. Firstly, the use of singular value decomposition is used to find the optimal measurements placement. This is the optimum environment where each measurement unit is given weight upon its effect on the state estimation accuracy. Loss of the measurement unit can...
The present paper proposes a novel quality measure for choosing a grasp with high task accuracy to achieve a specified task. In precision manipulation tasks such as a peg-in-hole insertion, the task accuracy required for each direction in the task space is different. It is required to choose the grasp which meets with specified task requirements. According to the linear system theory, the task-oriented...
Hysteresis and nonlinearity of piezo actuator are the major factors affecting the motion accuracy in controlling a micro system. The prediction accuracy of classical Preisach model could be improved only by mass experiments for measuring hysteresis. A model based on BP neural networks was proposed to improve the prediction accuracy. The stoke of piezo actuator has relation to current exciting voltage...
Based on the target localization of mobile robot, this paper has studied the localization system based on auditory perception mode. A model of the auditory system is established using bionics method so that the robot have the ability to handle the sound information and enhance its ability adapt to the environment. By designing the efficient denoising method to sound information, the robot can separate...
Compared with an optical encoder, structure of magnetic rotary encoder is very simple and not affected in dust and mist condition, can be used in badly condition. But its resolution and accuracy are low and difficult to be improved by conventional methods. In order to improve the resolution of magnetic encoder, a novel encoder structure and signal processing method base on calibration are present...
The problem of multi-robot cooperative localization based on relative bearings is researched in this paper. Relative bearings of different robots are fused with motions to improve the localization accuracy of robots. We analyse the situations about relative positions of the robots and their motion trajectories. Some relative positions and motion trajectories of the robots easily lead to not-converged...
This paper proposes a new technique of edge detection for inspecting edge and perfection of soldering joint in the pre-amplifier circuit, which is an important part in hard disk drive. Summation of error between the actual value and the measured value from the designed system of several data sets is formulated as the objective function. Genetic algorithm (GA) is adopted to find the optimal filter...
A low-invasive method to record neural activity is required for safe and practical brain-machine interfaces (BMI). BMIs are expected to be used to reintegrate motor functions of physically disabled persons; however, conventional invasive methods require electrodes inside the dura mater. In this study, the authors used epidural electrodes, which are located between the skull and dura mater, to record...
This paper proposes an automatic but simple counting method for counting the symmetric objects. In stead of using the classical thresholding method to segment the area of interest, fast radial symmetry transform is employed to segment the symmetric areas which are also the areas of interest. Simulation results show that the proposed counting method yields 100% counting accuracy in pills counting even...
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.