scholarly journals A Biologically Inspired Height-Adjustable Jumping Robot

2021 ◽  
Vol 11 (11) ◽  
pp. 5167
Author(s):  
Yunqian Ma ◽  
Yuliang Wei ◽  
Deyi Kong
Keyword(s):  
Gall Midge ◽  
Design Strategy ◽  
Practical Application ◽  
Biologically Inspired ◽  
Time Control ◽  
Clutch System ◽  
Vertical Jumping ◽  
Jumping Robot ◽  
Housing Mechanism ◽  
Novel Design

This paper presents the design and development of a miniature integrated jumping and running robot that can adjust its route trajectory and has passive self-righting. The jumping mechanism of the robot was developed by using a novel design strategy that combines hard-bodied animal (springtail) and soft-bodied animal (gall midge larvae) locomotion. It could reach a height of about 1.5 m under a load of 98.6 g and a height of about 1.2 m under a load of 156.8 g. To enhance the jumping flexibility of the robot, a clutch system with an adjustable height and launch time control was used such that the robot could freely switch to appropriate jumping heights. In addition, the robot has a shell with passive righting to protect the robot while landing and automatically self-righting it after landing, which makes the continuous jumping, running, and steering of the robot possible. The two-wheel mechanism integrated at the bottom of the housing mechanism provides the robot with horizontal running locomotion, which is combined with the vertical jumping locomotion to obtain different locomotion trajectories. This robot has the functions of obstacle surmounting, track adjustability, and load- and self-righting, which has strong practical application value.

A novel design strategy of a practical carbon anode material from a single lignin-based surfactant source for sodium-ion batteries

2020 ◽  
Vol 56 (45) ◽  
pp. 6078-6081 ◽  
Author(s):  
Changhao Li ◽  
Yi Sun ◽  
Qiujie Wu ◽  
Xin Liang ◽  
Chunhua Chen ◽  
...  
Keyword(s):  
Anode Material ◽  
Design Strategy ◽  
Sodium Ion ◽  
Carbon Anode ◽  
Sodium Ion Batteries ◽  
Lignin Sulfonate ◽  
Novel Design

A schematic illustration showing the preparation of HCM from a single sodium lignin sulfonate source and the process of Na storage.

Design and Kinematic Simulation of a Novel Leg Mechanism for Multi-Legged Robots

2021 ◽  
Author(s):  
Simone Asci ◽  
Ketao Zhang
Keyword(s):  
Legged Locomotion ◽  
Design Strategy ◽  
Research Field ◽  
Original Model ◽  
Legged Robots ◽  
Robotic Systems ◽  
Complex Control System ◽  
Robotic Leg ◽  
Novel Design ◽  
Original Configuration

Abstract Among mobile robotic research field, legged locomotion is largely applied for advanced robotic systems due to the higher degree of versatility compared to wheeled robots, which allows them to successfully move and interact in unstructured environments; nevertheless, legged robots present several designing problems and require a much more complex control system. Based on an effective robotic leg, this paper presents a novel design, which integrates a cam joint, aimed to improve the versatility performances minimizing changes in the original model and without increasing the control complexity. Furthermore, the design strategy aims to exploit the coupled action of two actuators, which are disposed in a novel configuration so to gain versatility advantage while maintaining velocity performances of legs equipped with a single actuator. The model is presented through a kinematic analysis, followed by the simulation of the leg mechanism trajectory and a comparison with the original configuration.

A novel design strategy for deeper blue and more stable thermally activated delayed fluorescent emitters

2020 ◽  
Vol 78 ◽  
pp. 105610
Author(s):  
Hua Sun ◽  
Xiao Tan ◽  
Shenglong Sang ◽  
Qian Liu ◽  
Po Sun ◽  
...  
Keyword(s):  
Design Strategy ◽  
Thermally Activated ◽  
Novel Design

Experiments on the Needle Shortening Pine Gall Midge

1974 ◽  
Vol 4 (3) ◽  
pp. 233-236 ◽  
Author(s):  
TH. THYGESEN
Keyword(s):  
Scots Pine ◽  
Gall Midge ◽  
Control Measures ◽  
Reliable Information ◽  
National Committee ◽  
Flight Period ◽  
Time Control ◽  
Highly Effective ◽  
Nursery Trees ◽  
Horticultural Plants

Abstract Data are given on the biology of this gall midge, which has proved harmful to young trees of Mountain and Scots Pine. Special attention has been paid to the flight period as reliable information on this is essential in order to time control measures. These can be carried out as sprays with parathion, diazinon or malathion, which all proved highly effective when applied twice during the flight period. As young nursery trees are most vulnerable, a warning for nurseries is issued by the National Committee for Propagation and Sanitary Inspection for Horticultural Plants every spring, when the first hatchings are noted.

scholarly journals Inertia Matching Manipulability and Load Matching Optimization for Humanoid Jumping Robot

10.5772/50916 ◽  
2012 ◽  
Vol 9 (1) ◽  
pp. 21 ◽  
Author(s):  
Zhaohong Xu ◽  
Tiansheng Lü ◽  
Xuyang Wang
Keyword(s):  
Stance Phase ◽  
Gear Ratio ◽  
Redundant Manipulator ◽  
Flight Phase ◽  
Load Matching ◽  
Landing Impact ◽  
Vertical Jumping ◽  
Order Polynomial ◽  
Jumping Robot ◽  
Impact Phase

Human jumping motion includes stance phase, flight phase and landing impact phase. Jumping robot belongs to a variable constraints system because every phase has different constraint conditions. An unified dynamics equation during stance phase and flight phase is established based on floated-basis space. Inertia matching is used to analyze actuator/gear systems and select the optimum gear ratio based on the transmission performance between the torque produced at the actuator and the torque applied to the load. Load matching is an important index which affects jumping performance and reflects the capability of supporting a weight or mass. It also affects the distributing of the center of gravity (COG). Regarding jumping robot as a redundant manipulator with a load at end-effector, inertia matching can be applied to optimize load matching for jumping robot. Inertia matching manipulability and directional manipulability are easy to analyze and optimize the load matching parameters. A 5th order polynomial function is defined to plan COG trajectory of jumping motion, taking into account the constraint conditions of both velocity and acceleration. Finally, the numerical simulation of vertical jumping and experimental results show inertia matching is in direct proportion to jumping height, and inertia matching manipulability is a valid method to load matching optimization and conceptual design of robot.

Ecological Materials in the Construction of Expression

2013 ◽  
Vol 641-642 ◽  
pp. 317-320
Author(s):  
Huan Zhang ◽  
Yu Guo Gao
Keyword(s):  
Architectural Design ◽  
Building Materials ◽  
Design Strategy ◽  
Environmental Resources ◽  
Practical Application ◽  
Relevant Theory ◽  
Ecological Building

In this paper, by analysizing relevant theory and properties of ecological building materials, eco-materials in architectural design strategy, for example, the practical application of the material in the Expo building which can explore the intrinsic link between ecological materials, architectural design and environmental resources.

A Novel Design Strategy for Stable Metal Complexes of Nitrogen Mustards as Bioreductive Prodrugs

2004 ◽  
Vol 47 (23) ◽  
pp. 5683-5689 ◽  
Author(s):  
Laurie L. Parker ◽  
Stephen M. Lacy ◽  
Louis J. Farrugia ◽  
Cameron Evans ◽  
David J. Robins ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Design Strategy ◽  
Nitrogen Mustards ◽  
Novel Design
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