A Petri Net-Based Ladder Logic Diagram Design Method for the Logic and Sequence Control of Photo Mask Transport

2009 ◽  
pp. 774-783 ◽  
Author(s):  
Yun Liu
Keyword(s):  
Petri Net ◽  
Design Method ◽  
Logic Diagram ◽  
Diagram Design ◽  
Ladder Logic

scholarly journals Algorithm to Convert Signal Interpreted Petri Net Models to Programmable Logic Controller Ladder Logic Diagram Models

2018 ◽  
Vol 10 (3) ◽  
pp. 905
Author(s):  
Z. Aspar ◽  
Nasir Shaikh-Husin ◽  
M. Khalil-Hani
Keyword(s):  
Petri Nets ◽  
Petri Net ◽  
Programmable Logic Controller ◽  
Conversion Process ◽  
Programmable Logic ◽  
Logic Diagram ◽  
Speed Up ◽  
High Level ◽  
Ladder Logic ◽  
Matrix Calculation

<span>Signal Interpreted Petri Nets (SIPN) modeling has been proposed as an alternative to Ladder Logic Diagram (LLD) modeling for programming complex programmable logic controllers (PLCs) due to its high level of abstraction and functionalities. This paper proposes an algorithm to efficiently convert existing SIPN models to their LLD models equivalences. In order to automate and speed up the conversion process, matrix calculation approach is used. A complex SIPN model was used to show that existing conversion technique must be expanded in order to cater for a more complex SIPN models.</span>

The Design of Control System for Motion Platform Based PLC

2013 ◽  
Vol 464 ◽  
pp. 222-228
Author(s):  
Yan Hong Wei ◽  
Chang Xu ◽  
Gui Rong Wang ◽  
Yun Tang Li
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Design Method ◽  
Operating Principle ◽  
Motion Platform ◽  
Positioning Precision ◽  
Turn On ◽  
Logic Diagram ◽  
Ladder Logic ◽  
Motion Flow

In this paper, a new-style platform control system with three degree of freedoms: up-down motion, left-right rolling and front-rear pitching is designed ,and also its composition, operating principle and soft design method are introduced. The system is driven by air cylinder and consists of FX series PLC, AD module, DA module, proportional valves , sliding rheostats and so on. Among these modules, sliding rheostats works as a feedback component to comprise a closed loop. Furthermore, to ensure the high positioning precision, thePIDalgorithm is applied. In addition, to control the motion flow reliably, the ladder logic diagram of the turn-off prior to turn-on is used to replace Sequential Function Chart. Experiments show that the motion platform is steady and safety when the proportional valves and directional valves are controlled by PLC.

Designer—a logic diagram design tool

1999 ◽  
Vol 31 (3) ◽  
pp. 211
Author(s):  
Chris Power
Keyword(s):  
Design Tool ◽  
Logic Diagram ◽  
Diagram Design

scholarly journals Diseño del programa de control para una celda de manufactura flexible didáctica

2014 ◽  
Vol 27 (3) ◽  
pp. 41
Author(s):  
Luis Diego Murillo-Soto
Keyword(s):  
Costa Rica ◽  
Logic Diagram ◽  
Ladder Logic

<p class="p1">Una forma alternativa de programar el controlador de una Celda de Manufactura Flexible (CMF) es utilizar el enfoque propuesto en Huang, Pastravanu y Gurel (1995), con la teoría de Aproximación Basada en Matrices (ABM) para sistemas de eventos discretos (DE). Esta teoría se diseñó para su implementación en computadores industriales en las cuales la ejecución de operaciones matriciales binarias en tiempo real no representa problema alguno, sin embargo, la implementación de dichas operaciones en controladores programables (PLC) comerciales no se puede realizar en forma directa ya que la mayoría de PLC se programan mediante lenguajes gráficos, como el llamado Lógica en Escalera (<em>Ladder Logic Diagram, LLD</em>). Dicha restricción provoca que este poderoso enfoque de programación de DE excluya la mayoría de autómatas programables de uso comercial. </p><p class="p1">El presente trabajo describe la interpretación de la teoría ABM con la finalidad de implementarla en un PLC comercial. El programa de control diseñado se probó con tres políticas de producción, en una celda de manufactura flexible multireentrante (MRF) ubicada en el Instituto Tecnológico de Costa Rica; el objeto de las pruebas fue observar el rendimiento de la celda de manufactura ante distintas políticas de despacho en la producción. </p>

scholarly journals Four Junction Traffic Light Controller using PLC (S7-200)

2020 ◽  
Vol 1 (2) ◽  
pp. 21-29
Author(s):  
Nyan Phyo Aung ◽  
Mo Mo Myint Wai ◽  
Lwin Lwin Htay
Keyword(s):  
Control System ◽  
Road Traffic ◽  
Light Signal ◽  
Programmable Logic ◽  
Light Control ◽  
Traffic Light ◽  
Light System ◽  
Logic Diagram ◽  
Traffic Light Control ◽  
Ladder Logic

Advance of a road traffic light control system using Programmable Logic Controller is the principal of the system. This system can be divided into two parts which are hardware and software. The hardware part for this system is a model of four -way junction of a traffic light. The Red, Yellow and Green are installed at each lane to represent as a traffic light signal indicator. This switches and lamps are linked to PLC. The PLC receives signal which is coming from the inputs (sensor and switch) and drives the units (lamps or relays). In the system, Siemens s7-200 PLC is used as the main controller of the traffic light system. The Step7 Micro Win software can be developed the ladder logic diagram which can control the traffic light for proposed system. So, the traffic light system can be successfully controlled by PLC.

scholarly journals A Tool for Evaluating the Performance of SiC-Based Bidirectional Battery Chargers for Automotive Applications

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6733
Author(s):  
Giuseppe Aiello ◽  
Mario Cacciato ◽  
Francesco Gennaro ◽  
Santi Agatino Rizzo ◽  
Giuseppe Scarcella ◽  
...  
Keyword(s):  
Design Method ◽  
Block Diagram ◽  
Power Converter ◽  
System Level ◽  
Design And Optimization ◽  
Dual Active Bridge ◽  
System Level Simulation ◽  
Dc Power ◽  
Battery Chargers ◽  
Diagram Design

In this paper, a procedure to simulate an electronic power converter for control design and optimization purposes is proposed. For the addressed application, the converter uses SiC-MOSFET technology in bidirectional battery chargers composed of two power stages. The first stage consists of a single-phase AC/DC power factor correction synchronous rectifier. The following stage is a DC/DC dual active bridge. The converter has been modulated using a phase-shift technique which is able to manage bidirectional power flows. The development of a model-based simulation approach is essential to simplify the different design phases. Moreover, it is also important for the final validation of the control algorithm. A suitable tool consisting of a system-level simulation environment has been adopted. The tool is based on a block diagram design method accomplished using the Simulink toolbox in MATLAB™.

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