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.
This paper presents an efficient navigation system which presents the navigation information to the visually impaired via Kinect and vibrotactile belt. The system consists of three parts. The first part is Kinect, which is used for obstacles detection. The second part is a laptop, the laptop processes the depth data of the context acquired by the Kinect, and then translates safe guidance hint into...
In this paper, a nonlinear speed control scheme which combines nonlinear optimal controller, nonlinear disturbance observer and adaptive kalman filter is proposed for Magnetically Suspend Flywheel (MSFW). Firstly, in order to improve the dynamic and steady-stage performances of motor driving system, the state feedback exact linearization model of BUCK converter is derived, and a nonlinear optimal...
Vibration isolation or protection of sensitive electronic devices/units is an ever-increasing demand in engineering practice. This study presents bio-inspired designs for this objective. It is known that, woodpeckers can drum the surface of a trunk at a high speed of 18–22 times per second with an acceleration of more than 1000g, but the damage of woodpecker's brain doesn't occur in this shock. This...
In this paper we introduced a new method to optimally select the time window for a single-trial classification problem in BCI system. As a hybrid-BCI, we combine EEG and NIRS signals to improve the performance of BCI system. Since there's a coupled relationship between EEG and NIRS, we try to define the activation state of subject's brain according to the changes of hemoglobin. We therefore defined...
This paper develops a hemiplegic walking functional recovery training device. This paper proposes a power assist mechanism, hip joint and knee joint motion adaptation mechanism based on the movement of the joints of the human body, mechanism corresponding to the individual differences in body shape, and mechanism to prevent side-overturning. The designed prototype of the device, then the effectiveness...
Joints flexibility will lead to the vibration of the manipulator's end-effector, not only affecting the execution of the task but also creating the safety problems. In order to achieve high accuracy and stability control, it is required to study the vibration properties of flexible-joint manipulators. First, we create the dynamics and kinematics models and analyze the effect of the joints flexibility...
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.