Teleoperation robots are being used more and widely. The safety issues of during operation increasingly attracting people's attention; In actual dangerous environments, the teleoperation control system, real‐time presence obstacles com‐presses robot's safe workspace, leading to failure planned paths. This study is mainly about a robot online obstacle avoidance algorithm based on offline trajectory, aiming at problems that ensure slave–robot not affected operation. Besides, this achieves goal...

The creep deformation and damage mechanism of compacted graphite cast iron (CGI) with varying pearlite contents were studied at 450 °C, 500 550 accompanying stress ranges from 40 MPa to 150 MPa. CGI alloys presents obvious when the temperature exceeds °C. rate exponentially decreases changes dislocation slip grain boundary sliding. There are (Ⅰ) intergranular transgranular cracks, (Ⅱ) interfacial debonding between matrix, (Ⅲ) morphologic transforming in microstructure during test. mainly...

Due to the development needs of intelligent manufacturing industry, use drones is expanding indefinitely, and at same time, extremely high requirements are imposed on autonomous navigation reduce human intervention. This paper presents an UAV/ UGV scheduling problem in which UAV be recharged by order working persistent tasks, meanwhile, need visits depots. Two different presented: fixed charging sets (FCSP) discrete (DCSP). In FCSP, fixed, a two‐stage travelling salesman method proposed...

With the continuous advancement of industrial automation, performance requirements for metallurgical robots, especially in teleoperation systems, are increasingly demanding. This paper presents an adaptive force/position control algorithm based on Fuzzy CMAC (Cerebellar Model Articulation Controller) asymmetric system. The system consists a novel 6-degree-of-freedom master robot and Baxter slave robot. Our design focuses addressing tracking transparency issues systems. Experimental results...

Inspired by military tactical, civil help-and-rescue applications, it is desirable yet challenging to develop networked systems of autonomous vehicles and sensors in dynamic, resource-constrained adversarial environments. An essential aspect designing such collaborative address the communication needs order perform a given mission. The vehicles' network should maintain connectivity pattern based on requirements In this paper, we consider both control aspects for coordinated path planning...

This paper studies dynamic obstacle avoidance strategies of quadruped robots in an unknown and dynamically changing environment. Different from classical navigation problems with static environment, number moving obstacles dynamics are present the scenario considered this paper. rapidly environment prevents us directly applying existing approaches for robots. To address additional challenges introduced by obstacles, improved window approach (DWA) is proposed which both evaluation function...

Situational awareness requires maintaining a reasonable level of communication connectivity in networks autonomous vehicles. It is difficult to overcome deep fading from time-varying wireless channels dynamic and resource constrained environment. Moreover, other system constraints such as the energy consumption total operation time make design protocols for systems more challenging. In this paper, we consider problem efficient communications between group vehicles with an adversarial We show...

<title>Abstract</title> Metallurgical industrial robots play an increasingly indispensable role in modern industries. Today, with a significant increase automation, people continually demand higher performance from metallurgical robots. The application of teleoperated system the field is becoming widespread. A teleoperation consists master robot and slave robot. Stability, tracking, transparency are requirements for systems. Asymmetric systems more widely used than isomorphism This study...

Thanks to the explosive developments of data-driven learning methodologies recently, reinforcement (RL) emerges as a promising solution address legged locomotion problem in robotics. In this manuscript, we propose novel concurrent teacher-student architecture for over challenging terrains, based only on proprioceptive measurements real-world deployment. Different from convectional that trains teacher policy via RL and transfers knowledge student through supervised learning, our proposed...

Assistive robots play an increasingly important role in the lives of people with disabilities. More and more research efforts are being focused on using Electrooculogram (EOG) signals driving assistive robots. This paper presents a novel human computer interface based EOG signal for controlling Firstly, this introduces generation mechanism EOG, collection method experimental scheme. Then analyzes principle autoregressive spectral entropy feature extraction algorithm, procedures results...

This paper describes a novel method of real-time view synthesis for an object that is observed by two fixed video cameras in natural environment. Without reconstructing the 3D model object, corresponding to virtual camera moves between real generated applying morphing process region image pair captured real-time. Using live frames, proposed can not only generate realistic views real-time, but also ensure and smooth transition cameras. It be used variety Mixed Reality (MR) applications...

In this paper, the adaptive replacement policy and pre-fetching technique for Web caching systems are studied with two user request models their combinations. Performance results from most commonly used policies: LRU (Least Recently Used) LFU Frequently compared. It is shown that performs better one of on opposite. The intelligent in finding best candidate as access pattern changes. learning speed system tested by different switch thresholds.

Abstract More and more researchers pay attention to the method of using stents treats intracranial aneurysms through way minimally invasive surgery. Due individual differences between patients complexity stenosis lesion, there is not an acknowledged criterion on stenting scheme, which mainly depends clinicians’ experience. Otherwise, inappropriate scheme may lead severe complications such as intravascular restenosis after a certain period time By means simulation explore this problem simple...

Abstract The tension-tension fatigue test of the compacted graphite cast iron (CGI) alloy was carried out by RDL100 universal testing at 500 °C and 550 °C, respectively. A trapezoidal load is applied to CGI specimen. Because time-dependent deformation elevated temperatures, stress–strain curve presents hysteresis loops, area loop increases gradually with continuous cyclic loading sustained times. Intergranular transgranular cracks in microstructure accelerate fracture failure. life sensitive...

Event detection is important in many sensor network applications. Traffic these applications exhibits a many-to-one pattern, which multiple source nodes send sensing data to single sink node. Since bandwidth and storage capacity highly constrained networks, packet loss inevitable when great deal of traffic rushes sink. Based on the observation that packets are not equal serving event detection, we propose employ priority-based queue management method (PBQM) improve delivery ratio more...

Abstract In recent years, chaotic encryption has been well applied in the field of cryptography by virtue its unique characteristics, and it received more attention security RFID data transmission. Using same key for decryption operations is a lightweight algorithm. However, there are various problems application process encryption: (1) nonlinear dynamic characteristics degradation short-cycle cycle will occur under influence computer limited accuracy; (2) numerical conversion required...

This paper studies the distributed multi-robot constrained navigation problem. While collision avoidance has been extensively studied in literature with safety being primary focus, individual robot's destination convergence is not necessarily guaranteed. In particular, robots may get stuck local equilibria or periodic orbits of system, some which are practically known as deadlock and livelock behaviors. Inspired by combination Control Lyapunov Function (CLF) Barrier (CBF) for nonlinear...

Abstract To solve the problem of ergonomic evaluation suit production system, a Hybrid method with IAHP and gray entropy theory is proposed. Firstly, literature review about ergonomics tools technology introduced. Furthermore, index system operation established according to practice. Besides, comprehensive model process Finally, detailed sewing, ironing clipping introduced by an example, results show that in paper helpful verify feasibility effectiveness improvement demonstration.