scholarly journals Synchronization of Heterogeneous Multi-Robotic Cell with Emphasis on Low Computing Power

2020 ◽  
Vol 10 (15) ◽  
pp. 5165
Author(s):  
Martin Juhás ◽  
Bohuslava Juhásová
Keyword(s):  
Time Synchronization ◽  
Control Unit ◽  
External Control ◽  
Control Element ◽  
Production Cycle ◽  
Problem Solution ◽  
Robotic Cell ◽  
Operating Cycle ◽  
Computing Power ◽  
A Cell

This paper presents a time-synchronization solution for operations performed by a heterogeneous set of robotic manipulators grouped into a production cell. The cell control is realized using master–slave architecture without an external control element. Information transmission in a cell is provided by a TCP/IP channel in which communication is ensured via sockets. The proposed problem solution includes an algorithm, which is verified and validated by simulation and tested in real environment. This algorithm requires minimal computational power thanks to an empirically oriented approach, which enables its processing directly by the control unit of each participating element of the robotic cell. The algorithm works on the basis of monitoring and evaluating time differences among sub-operations of master and slave devices. This ensures defined production cycle milestones of each robotic manipulator in the cell at the same time are attained. Dynamic speed adaptation of slave manipulators utilizing standard instructions of their native language is used. The proposed algorithm also includes a feedforward form of operations synchronization which responds to changes in the operating cycle of the master manipulator. The application of the solution proposal is supplemented with a visualization part. This part represents a complementary form of designed solution implementation.

The Promoter Activity of the Phospholipase C-γ2 Gene Is Regulated by a Cell-Type-Specific Control Element

1997 ◽  
Vol 16 (4) ◽  
pp. 485-492 ◽  
Author(s):  
SEUNG-JAE LEE ◽  
YOUNG YIL BAHK ◽  
DOO HEE YUN ◽  
HE-JIN LEE ◽  
YOUNG HAN LEE ◽  
...  
Keyword(s):  
Phospholipase C ◽  
Promoter Activity ◽  
Control Element ◽  
Cell Type ◽  
A Cell ◽  
Cell Type Specific ◽  
Specific Control ◽  
Γ2 Gene

Determining Feasible Robot Placements in Robotic Cells for Composite Prepreg Sheet Layup

2019 ◽  
Author(s):  
Rishi K. Malhan ◽  
Ariyan M. Kabir ◽  
Brual Shah ◽  
Timotei Centea ◽  
Satyandra K. Gupta
Keyword(s):  
High Performance ◽  
Computationally Efficient ◽  
Robotic Cell ◽  
Precursor Material ◽  
Robotic Cells ◽  
A Cell ◽  
Complex Decision ◽  
Computationally Efficient Algorithms ◽  
Refinement Strategy ◽  
Robot Placement

Abstract High-performance composites are widely used in industry because of specific mechanical properties and lightweighting opportunities. Current automation solutions to manufacturing components from prepreg (pre-impregnated precursor material) sheets are limited. Our previous work has demonstrated the technical feasibility of a robotic cell to automate the sheet layup process. Many decisions are required for the cell to function correctly, and the time necessary to make these decisions must be reduced to utilize the cell effectively. Robot placement with respect to the mold is a significant and complex decision problem. Ensuring that robots can collaborate effectively requires addressing multiple constraints related to the robot workspace, singularity, and velocities. Solving this problem requires developing computationally efficient algorithms to find feasible robot placements in the cell. We describe an approach based on successive solution refinement strategy to identify a cell design that satisfies all constraints related to robot placement.

SPIKING NEURAL P SYSTEMS: AN EARLY SURVEY

2007 ◽  
Vol 18 (03) ◽  
pp. 435-455 ◽  
Author(s):  
GHEORGHE PĂUN ◽  
MARIO J. PÉREZ-JIMÉNEZ ◽  
ARTO SALOMAA
Keyword(s):  
Membrane Computing ◽  
Normal Forms ◽  
P Systems ◽  
Research Topics ◽  
Open Problems ◽  
Computing Power ◽  
Spiking Neural P Systems ◽  
A Cell ◽  
Early Survey ◽  
Basic Ideas

Spiking neural P systems were introduced in the end of the year 2005, in the aim of incorporating in membrane computing the idea of working with unique objects ("spikes"), encoding the information in the time elapsed between consecutive spikes sent from a cell/neuron to another cell/neuron. More than one dozen of papers where written in the meantime, clarifying many of the basic properties of these devices, especially related to their computing power. The present paper quickly surveys the basic ideas and the basic results, presenting a complete to-date bibliography, and also giving a completing result related to the normal forms possible for spiking neural P systems: we prove that the indegree of such systems (the maximal number of incoming synapses of neurons) can be bounded by 2 without losing the computational completeness. A series of research topics and open problems are formulated.

The 5′-Flanking Sequences of the Human Growth Hormone Gene Contain a Cell-Specific Control Element

DNA ◽  
1986 ◽  
Vol 5 (6) ◽  
pp. 503-509 ◽  
Author(s):  
PETER A. CATTINI ◽  
LINDA N. PERITZ ◽  
THOMAS R. ANDERSON ◽  
JOHN D. BAXTER ◽  
NORMAN L. EBERHARDT
Keyword(s):  
Growth Hormone ◽  
Human Growth Hormone ◽  
Human Growth ◽  
Control Element ◽  
Growth Hormone Gene ◽  
A Cell ◽  
Flanking Sequences ◽  
Specific Control ◽  
Human Growth Hormone Gene

scholarly journals On MEMS Reliability and Failure Mechanisms

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Daniel J. Fonseca ◽  
Miguel Sequera
Keyword(s):  
Health Care ◽  
Design Process ◽  
Manufacturing Process ◽  
Failure Modes ◽  
Microelectromechanical Systems ◽  
Failure Mechanisms ◽  
Production Cycle ◽  
Operating Cycle ◽  
Operational Failure ◽  
The Military

Microelectromechanical systems (MEMS) are a fast-growing field in microelectronics. MEMS are commonly used as actuators and sensors with a wide variety of applications in health care, automotives, and the military. The MEMS production cycle can be classified as three basic steps: (1) design process, (2) manufacturing process, and (3) operating cycle. Several studies have been conducted for steps (1) and (2); however, information regarding operational failure modes in MEMS is lacking. This paper discusses reliability in the context of MEMS functionality. It also presents a brief review of the most relevant failure mechanisms for MEMS.

The Transmitter Controller Design of Induced Polarization Instrument

2011 ◽  
Vol 148-149 ◽  
pp. 221-224
Author(s):  
Ai Ping Wu ◽  
He Ping Pan
Keyword(s):  
Time Domain ◽  
High Stability ◽  
Time Synchronization ◽  
Controller Design ◽  
Control Unit ◽  
Induced Polarization ◽  
Micro Control Unit ◽  
Actual Test

According to the principle of time domain induced polarization, the transmitter controller is designed with Micro Control Unit, the design of hardware and software is described in detail. Time synchronization is realized by GPS, so the accuracy of the system is improved. Simulation and actual test show that the system has characteristics of safety and high stability, it has good prospects.

scholarly journals Electronic calendar as an element of digital IT-farm management

2020 ◽  
Vol 27 ◽  
pp. 00150
Author(s):  
Victoria Sidorova ◽  
Evgeny Petrov
Keyword(s):  
Live Weight ◽  
Animal Husbandry ◽  
Control Element ◽  
Production Cycle ◽  
Accounting System ◽  
Functional Dependencies ◽  
Time Intervals ◽  
Electronic Reporting ◽  
Document Flow ◽  
On Farm

Management of on-farm processes in animal husbandry with an analogue primary accounting system (acts, journals, statements, certificates, cards, etc.) was carried out using paper, and later electronic reporting forms. In the paper flow of zootechnical accounting, the document contained 70-250 records, the processing and maintenance of which took a lot of time: when entering 25-30 characters per minute, 1.5-2.5 hours; in electronic forms the number of printed characters has been reduced by 5-10 times, or up to 10-20 entries per document per minute. The transition from paper reporting to electronic reporting stabilized the speed of accounting and the number of personnel: 4 accountants were replaced by 1 computer operator, while expanding the database. The digitalization of the electronic calendar as a control element for a “smart” farm is becoming a new stage in optimizing work with document flow. The electronic calendar monitors economic and economic processes, time intervals, problems, automatically generates databases of production processes depending on the “key feature”, for example, the indicator “live weight”: animals that meet the condition С0>Cc, who have collected the necessary live weight, pass to the next production cycle. Mass “С”. Animals С0 = – Cc, that do not meet the requirement, are transferred to the emergency implementation group as economically ineffective for further fattening. The program of cyclical formation of production groups Cij depending on the weighing results, is described by a simulation model U = f(x, p), where U is the state of the modeled component, f are the main functional dependencies, x are variables, p are parameters.

scholarly journals Increasing the Efficiency of a Robotic Cell Using Simulation

2021 ◽  
Vol 29 (49) ◽  
pp. 24-35
Author(s):  
Martin Juhás ◽  
Bohuslava Juhásová ◽  
Eduard Nemlaha ◽  
Dominik Charvát
Keyword(s):  
Robotic Arm ◽  
Production Cycle ◽  
Simulation Tool ◽  
Direct Impact ◽  
Robotic Cell ◽  
Cell Efficiency ◽  
Time Performance

Abstract The paper deals with the possibilities of increasing the efficiency of a robotic cell. The robot assembly station is a part of a multi-robotic workplace capable of performing solitary operations. The complete production cycle of the cell is subjected to a thorough analysis. Deficiencies, having a direct impact on cell efficiency, are identified. These shortcomings include redundant movements of the robotic arm, the absence of an inspection mechanism for the presence of assembly parts, and inefficient instructions of the production cycle algorithm. The identified deficiencies are eliminated using the CIROS simulation tool. The result of the adjustments is a global 11.4% increase in the efficiency of the robotic cell in terms of time performance.

scholarly journals Timing and Navigation in UAVs

2018 ◽  
Vol 5 (1) ◽  
pp. 17-25
Author(s):  
Karen Von Hünerbein ◽  
Werner R Lange
Keyword(s):  
Time Synchronization ◽  
Health And Safety ◽  
Test Methods ◽  
Global Navigation Satellite Systems ◽  
External Control ◽  
Satellite Systems ◽  
Environment And Health ◽  
Wide Range ◽  
Correct Function ◽  
Global Navigation Satellite

Precise timing and precise location information are provided by Global Navigation Satellite Systems (GNSS) and play a crucial role in the positioning, navigation and data acquisition of most Unmanned Aerial Vehicles (UAV). GNSS functions include the following applications in UAVs: time-stamping and geo-referencing of collected data and images, synchronization of swarm flying and follow-me flights, determination of position and attitude in-flight, flight trajectory by following a pre-defined number of waypoints, mission planning, return home automatically without external control, avoidance of obstacles and geo-fencing.  Some of these critical operations have implications for the safety of the UAV, the surrounding environment and health and safety of people, for example UAVs threatening to bring down aircrafts  at airports, which are no-fly zones for UAVs. The appropriate GNSS based function to avoid this is geo-fencing. Another example is obstacle avoidance to prevent collisions and damages both for the UAV and the obstacle, e.g. anything from a window pane, tree, human being, to a power line. In order to ensure health and safety it is thus important to ensure correct function of the navigation and the timing, under a wide variety of circumstances, and in different signal environments. There can be signal disturbances, such as obscurations by buildings or reflected GNSS signals, called multipath. The performance of timing and navigation based on GPS/GNSS can be tested and verified in a controlled and repeatable way in the laboratory with different types of test equipment. We will give an introduction to a wide range of potential threats to GNSS Positioning, navigation and timing and an overview of different test methods. In addition, we are presenting a method for time synchronization of drones to enable safe swarm and follow flights in UAVs.

Acceleration Components in Heterogeneous Supercomputers

2011 ◽  
Vol 204-210 ◽  
pp. 765-768
Author(s):  
Xian Min Wei
Keyword(s):  
Energy Consumption ◽  
Power Consumption ◽  
Low Power ◽  
Control Unit ◽  
General Purpose ◽  
Low Power Consumption ◽  
Computing Power ◽  
General Purpose Processor ◽  
Computing Performance ◽  
Good Expansion

General-purpose processors continue to improve computing performance, but its energy consumption has far exceeded the increase in the proportion of performance. Specifically designed for the special purpose processor in the case of relatively low power consumption, can provide better performance. The general-purpose processor as the main control unit, special purpose processors as accelerators consisting of heterogeneous supercomputers will become a trend in supercomputer development. This paper introduces and analyzes several heterogeneous supercomputers used to build the acceleration components.While accelerate parts based on such components have obvious calculation advantages (high computing power, low power consumption), but with less application and difficult programming bottlenecks still exist. After all, the application number is limited which using hundreds, thousands or even more parallel computing for good expansion performance, and the workload of migration, development and optimization remains high.

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