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.
The passive dynamic control (“PDC”) is a mechanical system control method based on an inherently safe design. It positively uses a passive element (braking effort) whose characteristics are variable. In this paper, the PDC is applied to a rotary pneumatic actuator. First, the rotary pneumatic actuator equipped with an electromagnetic brake and a sensor for applying the PDC is proposed, and its control...
Robots need to be dependable to work closely with humans. Further they must be accountable for the system design and development process. This makes some of the safety related standards such as IEC61508 adopt module based architecture and model driven engineering process. On the other hand, module-based architectures using middlewares are popular in the integration phase, when developing robot systems...
Safety-critical systems are systems where failures lead to catastrophic results: resulting in loss of life, significant property damage, or damage to the environment. These systems range from aerospace on-board control systems, ground flight control systems, medical devices, nuclear power plants control, automotive systems, military systems, just to name a few. Other information systems are becoming...
We explore different kind of functions which a projection-based optical safety system may provide in the context of physical human-robot interaction (HRI). A scenario will be presented in which a collaborative workbench equipped with a robot arm is augmented by overhead cameras and a projector. Beside safe collision avoidance, this system provides additional functions like information display and...
We present preliminary results on the passive velocity field control (PVFC) of the quadrotor-type UAVs, which allows the quadrotor to follow the direction of a given velocity field while enforcing passivity of the closed-loop system. Some theoretical results are presented along with a simulation result.
This paper analyses the common characteristics and relevance of animal behavior and traffic behavior. It describes the feedback mechanism of animal behavior and the information process of traffic behavior from the point of view on automatic control, and then points out that the two behaviors are both controlled by themselves and environment. at last, by analyzing bats' echolocation system, this paper...
Enabling robots to safely interact with humans is an essential goal of robotics research. The developments achieved over the last years in mechanical design and control made it possible to have active cooperation between humans and robots in rather complex situations. In these terms, safe behavior of the robot even under worst-case situations is crucial and forms also a basis for higher level decisional...
Since ∼400 BC, when man first replicated flying behavior with kites, up until the turn of the 20th century, when the Wright brothers performed the first successful powered human flight, flight functions have become available to man via significant support from man-made structures and devices. Over the past 100 years or so, technology has enabled several flight functions to migrate to automation and/or...
Various advanced driver assistance systems (ADASs) have recently been developed, such as Adaptive Cruise Control and Precrash Safety System. However, most ADASs can operate in only some driving situations because of the difficulty of recognizing contextual information. For closer cooperation between a driver and vehicle, the vehicle should recognize a wider range of situations, similar to that recognized...
For robots working in human environment, human safety is one of the most serious and important aspects to be considered. Appropriate intrinsic and / or functional safety design must be employed for collaborative robots in order to reduce the human injury risks through physical human-robot interaction. Above all the situations that such interactions are possible to occur, it is reported that clamping...
Mixed traffic denotes the coexistence of two driving styles: human and automated driving. Until now, there has been an ambiguity about the driver's safety in mixed traffic. Traffic safety studies focus on a synthesis of control laws which help drivers to avoid or mitigate collisions. Classic safety descriptors use only the time to collision, a time criterion for safety assessment. Other assess traffic...
Cooperative driving is a promising technology for reducing traffic jams, limiting CO2 emissions and reducing traffic accidents. With the future mixed traffic, the current platooning concept comes to its limitations when human-driven vehicles interfere with the platoon between the autonomous vehicles without negotiation. In this interfering situation, most of them have to break down into two platoons,...
The human factors involved in an unmanned aerial system (UAS) come in a variety of forms that has largely gone poorly represented in literature. In this paper, a holistic approach is taken to identify not only the individual aspects but the interconnection of the human-UAS interaction. First, an examination of human factors involved in a UAS are presented. Next, the metrics of human performance, such...
In order to control the key point of accidents during bridge construction, a number of major risk factors are recognized from the point of the insecure elements of human beings and the insecure status of objects, and a risk assessment index system of bridge construction stage is created based on these risk factors; so given the uncertainty and fuzziness of the risk factors, the risk assessment of...
According to object oriented methodology, all of the controller object, sensor object and actor object are intelligent in a human body simulated control system. The above three intelligent control objects can co-operate with each other to keep the controlled system safety and reliability although one of them does not work. The above three intelligent objects consist of human body simulated controller,...
The paper is devoted to the safety of complex technical systems of systems (SoS) through the improvement of engineering processes at all system lifecycle stages. The safety of complex technical facilities (such as nuclear and conventional power plants, offshore oil and gas platforms and chemical processing plants) is analyzed based on the systems theory and SoS engineering. The safety concept discussed...
In this paper, we present a driver-automation system for providing brake assistance to the driver using the concepts of various levels of intervention. The system offers potential for further development and integration into main stream cars using by-wire technology, both from passenger safety and system usability perspectives. The criticality of the situation of a potential crash is estimated using...
In the paper the new results of the safety investigations of the multistate complex systems with dependent components in variable operation conditions called critical infrastructures are presented. The multi-state safety function of the critical infrastructure system is defined and determined for an exemplary critical infrastructure. In the developed models, it is assumed that the system components...
In recent years, collision safety between a human and a robot has been increasingly important along with the spread of service robots. Much research has been conducted on how to design a safe manipulator, but it is not applicable to real manipulators yet. To deal with this problem, we propose a guideline to design a safe manipulator, which is composed of two phases, the safety evaluation and design...
Robots will more and more enter our daily life. In order to increase their acceptance it is necessary that their movements and behavior are predictable. With our present experiment we assess the acceptance of autonomous robots in human working and living environments. As a specific indicator we define legibility as an important prerequisite for user acceptance. In a simulator study participants rated...
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.