A snake robot with mixed gaits capability

Snake robots are mostly designed based on single mode of locomotion. However, single mode gait most of the time fails to work effectively when they are required to work in different cluttered environment with different measures of complexity. As a solution, mixed mode locomotion is proposed in this paper by synchronizing serpentine gait for unconstricted workspace and wriggler gait for narrow space environment through development of a simple gait transition algorithm. This study includes the investigation on kinematics analysis followed by dynamics analysis while considering related structural constraints for both gaits. This approach utilized speed of the serpentine gait for open area operation and exploits narrow space access capability of the wriggler gait. Hence, this approach in such a way increases motion flexibility in view of the fact that the snake robot is capable of changing its mode of locomotion according to the working environment

Efficient locomotion on non-wheeled snake-like robot

This article presents our current work on studying energy efficient locomotion on crawling snake-like robots. The aim of this work is to use existing biological inspired methods to demonstrate lateral undulation planar gaits for efficiently controlling high-speed motion as a function of the terrain surface. A multilink non-wheeled snake-like robot is being developed for experimentation and analysis of efficient serpentine locomotion based on simulation results

Mechanical Description of a Hyper-Redundant Robot Joint Mechanism Used for a Design of a Biomimetic Robotic Fish

A biologically inspired robot in the form of fish (mackerel) model using rubber (as the biomimetic material) for its hyper-redundant joint is presented in this paper. Computerized simulation of the most critical part of the model (the peduncle) shows that the rubber joints will be able to take up the stress that will be created. Furthermore, the frequency-induced softening of the rubber used was found to be critical if the joints are going to oscillate at frequency above 25 Hz. The robotic fish was able to attain a speed of 0.985 m/s while the tail beats at a maximum of 1.7 Hz when tested inside water. Furthermore, a minimum turning radius of 0.8 m (approximately 2 times the fish body length) was achieved

Design of a swimming snake robot

This paper presents the design and realization of a bioinspired snake robot that can move on the water surface. This robot mimics the locomotion strategies of anguilliform fishes such as eels and lampreys, which have a thin, long, cylindrical body and whose movement resembles the crawling of a snake. An autonomous underwater vehicle with such a shape can pass through narrow crevices and reach places inaccessible to other swimming robots. Moreover, this locomotion entails a high energy efficiency and outstanding agility in maneuvers. The body of the bioinspired robot consists of a modular structure in which each module contains a battery, the electronic board, and a servo motor that drives the following module. The head of the robot has a different shape as it contains a camera and an ultrasonic sensor used to detect obstacles. In addition to the design of the robot, this paper also describes the implementation of the kinematic model

Role of smartphone devices in motivation to study in the Covid-19 Pandemic

Aims The sudden COVID-19 pandemic experienced globally has caused many schools and institutions of higher learning to resort to fully online teaching and learning throughout the world. Since online teaching is essentially a student-centered learning approach, students’ motivational level plays an important role in making teaching protocols effective. This study aimed to know the level of motivation to study using a smartphone in the COVID-19 pandemic. Instrument & Methods This descriptive study was carried out in 2020 on 75 Indonesian Academy of Administrative Management College students who have smartphones. These students were selected by random sampling method. Data were collected using a researcher�made questionnaire and analyzed by SPSS 17 software using Pearson correlation coefficient and simple linear regression test. Findings There was a positive and significant correlation between the mean score of smartphone usage and the mean score of study motivation (r=0.84; p=0.0001). The effect of smartphone uses on the study motivation in the Covid-19 pandemic was 61.7% (R2=0.617). Conclusion With the increasing use of smartphones, the motivation to learn during pandemic COVID-19 also increased

A Single Unit Concept And Design Of A High Maneuverability Mobile Robot

The aim of this project is to design and produce a mobile robot as a tool that could replace humans to perform certain tasks such as search, inspection, navigation and rescue in hazardous environments. The mobile robot has the ability to move in the environment such as air, soil and water. Some types of mobile robots that have been widely developed such as legged robots, wheeled robot with no arms, wall climbing robot and robot amphibians. The mobile robot is also known as bio-inspired robot. Snake robot is one example of a mobile robot. Snake robots are suitable for environment that is very limited because of the small cross section and highly redundant kinematics enables them to enter and move through narrow spaces. Robot snake promising mechanism for real-world applications such as search and rescue in destroyed city and industrial inspection. The degree of freedom gives them the potential to adapt to complex environments for confined spaces. Snake robots offer advantages over traditional mobile robots because they provide properties that can be achieved especially in an environment that convoluted. Thus, a mobile robot is generated using CAD software systems of SolidWorks and a prototype is produced to test it abilities. Physical appliances that have been used are an Arduino UNO, servo motors, and other electrical equipment. After that, the functional test and mechanism of the snake robot prototype has been carried out