Microbial induced carbonate precipitation (MICP) is a new geotechnical engineering technology used to strengthen soils and other materials. Although it considered be environmentally friendly, there lack of quantitative data objective evaluation support conclusions about its environmental impact. In this paper, the energy consumption carbon emissions MICP are quantitatively analyzed by using life cycle assessment (LCA) method. The effects evaluated from perspectives resource results show that...

Backfill mining technology is the practice of returning waste materials underground for both disposal and geotechnical stability, however, a challenge with current technologies that they commonly require cement-based binders which have relatively high environmental impact. Finding alternatives to can improve performance this paper proposes microbial grouted backfill (MGB) as potential solution. In paper, effects cementation solution concentration (CSC), volume ratio bacterial (VRBC),...

Understanding the phase-change mechanism is vital to development and application of novel biphasic solvents for CO2 capture. However, this remains poorly investigated. Triethylenetetramine–polyethylene glycol (TETA–PEG200) solution a typical that may exhibit liquid–solid phenomena after absorption. Results from 13C NMR FTIR analyses show existence same types monocarbamates, dicarbamates, alkylcarbonate in both liquid solid phase change occurs. In addition, monocarbamate main product...

Motion accuracy is an important indicator to evaluate the performance of robots. The driven arm Delta robot composed a pair parallelogram mechanisms. Because errors in components processing and installation, parallelogram-driven mechanism will tilt. In addition, load have greater inertia impact on end-effector high-speed working condition. Therefore, loading effect cause parallelism error moving platform affect motion robot. Aiming at analysis robot, currently, most studies mainly consider...

Belt conveyor is widely used for material transportation over both short and long distances nowadays while the failure of a single component may cause fateful consequences. Accordingly, use machine learning in timely fault diagnosis an efficient way to ensure safe operation belt conveyors. The support vector powerful supervised algorithm classification diagnosis. Before classification, principal analysis data reduction according varieties features. To optimize parameters machine, this paper...

The Delta robots are widely used in packaging, sorting, precision positioning, and other fields. Motion accuracy is an important indicator for evaluating robot performance. However, due to the existence of mechanism errors, motion will be reduced. Therefore, how reduce errors improve issues robots. purpose present study analyze error propose compensation scheme robot. Firstly, kinematic model established by D-H matrix transformation method. An considering dimension error, revolute joint...

Delta parallel robots are widely used in assembly detection, packaging sorting, precision positioning, and other fields. With the widespread use of robots, people have increasing requirements for motion accuracy reliability. This paper considers influence various mechanism errors on analyzes reliability mechanism. Firstly, we establish a kinematic model robot obtain relationship between position end effector structural parameters based improved D–H transform rule. Secondly, an error...

The fusion of mechatronics, communication, control, and information technologies has introduced new automation paradigms into the production environment. Plug-and-play flexible manufacturing systems will become suitable approaches in future for development modular, flexible, reconfigurable systems, addressing requirements global markets. This article introduces a Petri Net model-driven methodology development, validation, operation radio-frequency identification-enabled decentralized system....

In this paper, we propose a new kind of tripedal locomotion-namely, robotic walking with three legs. We develop prototype robot, which call Martian III, having stretchable legs fixed to each other at the center body. Therefore coxa (the hip joint) is completely in and only control have are linear actuators stretch radial directions. The robot developed as minimal model examine our basic idea, make swing by actuating then generate locomotion utilizing geometric effect rigid body rolling on...

To deal with the problem of weak prediction and performance evaluation capabilities traditional methods, a method health state belt conveyor based on Dynamic Bayesian Network (DBN) is proposed. First, sensor monitoring data are preprocessed to obtain feature set labels. At same time, qualitative quantitative analyses interval discretization carried out from fault‐causing elements construct DBN network. Then, sample applied network for training, DBN‐based model established. Finally, taking...

The kinematics and redundant space analysis of robots constitutes important research content. Currently, methods such as geometric method iterative optimization are relatively complicated inconvenient for programming practical control applications. Moreover, little has been conducted on analysis. This paper takes the 4-DOF PowerCube robot object. forward inverse equation established based D-H matrix method, projection cosine theorem vector coordinate method. Then, is obtained range analyzed....

Based on multi-body system dynamics, the model of Yutong high-speed bus was built by ADAMS/Car software to analyse influence crosswind bus' handing stability. Seven discrete wind pressure centers effects chasis were taken into account, so with a shifting center achieved. After improving standard sensitivity test that is prescribed American ESV (Experimental safety vehicle), simulation tests center's shift and immobile carried out. The straight-line without also completed. By comparing...

Redundant robots can complete other tasks while performing main task and have excellent motion performance. Although redundant redundancy characteristics, they may still fall into singular configuration or cannot overcome joint limits due to the limitation of their own structure law. Besides, currently, most research mainly focus on obstacle avoidance at end robot. So comprehensive study is conducted obstacle, singularity, limit Firstly, kinematics model robot obtained by D-H matrix method....

Abstract Human-redundant robot contact interaction control based on joint current is conducted. This a sensorless method. The key issues involved are dynamic parameters identification and strategy of robot. Firstly, kinematics model linear established parameter matrix to be identified obtained. Pattern search method adopted optimize motion trajectory Dynamic obtained by using least square results indicate that the calculated has consistent trend with actual measured value, error small. In...

In order to effectively solve the problems of large audit errors and low operation efficiency in current enterprise financial reimbursement methods, based on RPA robot, automatic method is optimized. Combined with numerical probability algorithm, a number data are reasonably classified, classified transmitted project configuration module for approval. This paper optimizes safety evaluation process audit, checks accuracy processing structure, achieves design goal optimizing effect audit. The...

As both information technology and renewable energy continue to develop rapid reforms sweep across the power industry, comprehensive service is increasingly important in realizing improved efficiency reduced costs. The uses Power Line Communication (PLC) fully utilize existing lines for fast low-cost deployment of various Internet Things (IoT) terminals used collection, lighting control, air conditioner distribution monitoring, more. This document analyzes feasibility multi-service...