scholarly journals Electro-Pneumatic Control System with Hydraulically Positioning Actuator Motor

2016 ◽  
Vol 16 (06) ◽  
pp. 1-26
Author(s):  
V Pil'gunov ◽  
K Efremova
Keyword(s):  
Control System ◽  
Pneumatic Control

Study on Novel Automatic Steel Bundling Machine Pneumatic Control System

2012 ◽  
Vol 490-495 ◽  
pp. 594-597
Author(s):  
Cheng Qun Li ◽  
Liang Gao
Keyword(s):  
Control System ◽  
Control Program ◽  
Control Flow ◽  
Pneumatic Control ◽  
The Core ◽  
New Type ◽  
Action Process ◽  
And Control

This paper introduces a new type of automatic steel bundling machine for bundling process, which includes a pneumatic action process, mainly do some researches on the pneumatic control system. The system chooses PLC as the core control component, puts forward the hardware of control system and control flow. Eventually we have been designed the control program.

Design and Tests of a Multi-pin Flexible Seedling Pick-up Gripper for Automatic Transplanting

2019 ◽  
Vol 35 (6) ◽  
pp. 949-957 ◽  
Author(s):  
Luhua Han ◽  
Francis Kumi ◽  
Hanping Mao ◽  
Jianping Hu
Keyword(s):  
Control System ◽  
Penetration Depth ◽  
Working Pressure ◽  
Pneumatic Control ◽  
Position Detection ◽  
Maximum Penetration Depth ◽  
Timely Response ◽  
Plug Seedling ◽  
Maximum Penetration ◽  
Push Out

HighlightsA multi-pin flexible pick-up gripper with a four-jaw chuck having four pick-up pins has been developed.The gripper can effectively grasp, hold and release plug seedlings with low damages to the plants and the root soil.Based on a typical on-off control and cylinder stroke position detection, the control system for timely response was designed to automate the process of picking up and releasing seedlings.Abstract. A multi-pin flexible seedling pick-up gripper for automatic transplanting was developed and evaluated. The gripper having a four-jaw chuck mainly consists of a parallel-type air gripper with four fingers, four fork frames, four cylinder fingers, and several connecting/supporting parts. The air gripper moves to open and close the cylinder fingers, and the cylinder fingers each having a flexible pin grasp and release the seedling. When the pick-up gripper extracts seedlings from the tray cells, its four cylindrical fingers push out four pick-up pins to penetrate deep into the root soil and then close, making the pick-up pins to firmly hold the root soil for lifting. When the pick-up gripper releases seedlings, its fingers open, making the pick-up pins loosen the root soil and then pull back for discharging. An electrical and pneumatic control system was designed to coordinate the execution of each action. The pick-up gripper attached to a robotic manipulator was tested on a range of plug seedling transplanting parameters and conditions. The results showed that penetration depth, seedling species, and the interaction of working pressure and seedling species significantly influenced the successful automatic transplanting. On the whole, the seedling integrity ratio in automatic transplanting was found to be up to 93.37%. For optimum performance of the device in transplanting seedlings, the pick-up pins of the multi-pin gripper need to grasp the maximum amount of root soil at their maximum penetration depth. Keywords: Gripper, Flexible, Multi-pin, Seedlings, Transplanting.

Analysis of an Opto-Pneumatic Control System and Improvement of its Control Performance

1999 ◽  
Vol 11 (4) ◽  
pp. 251-257 ◽  
Author(s):  
Tetsuya Akagi ◽  
◽  
Shujiro Dohta ◽  
Hisashi Matsushita ◽  
Keyword(s):  
Control System ◽  
Position Control ◽  
Sliding Mode ◽  
Pneumatic Cylinder ◽  
Control Performance ◽  
Pneumatic Control ◽  
Servo Valve ◽  
Proposed Model ◽  
Control Scheme

This paper describes an analysis of an opto-pneumatic control system and an improvement of control performance of the system. The opto-pneumatic system consists of an optical servo valve, a pneumatic cylinder and a cart. First, we built an analytical model of the system considering a nonlinear friction where exists in sliding parts. And we confirmed the validity of the proposed model by comparing theoretical results with experimental results of the characteristics of optical servo valve and cart position control. Then, we applied a sliding mode control scheme compensating a steady-state disturbance to multi- position control and follow-up control of a cart. By computer simulation, we confirmed that the control performance of opto-pneumatic control system was improved by using this control scheme.

S1740103 Validation of interlock-system of the pneumatic control system as safety system in EN 764-7

2014 ◽  
Vol 2014 (0) ◽  
pp. _S1740103--_S1740103-
Author(s):  
Mizuho NAKAMURA ◽  
Shinya TANAKA ◽  
Masanobu CHIBA ◽  
Noboru SUGIMOTO
Keyword(s):  
Control System ◽  
Safety System ◽  
Pneumatic Control ◽  
Interlock System

Proposal of list of hazard on pressure in pneumatic control system risk assessment

2018 ◽  
Vol 2018 (0) ◽  
pp. S1720002
Author(s):  
Mizuho NAKAMURA ◽  
Tomohiro SASAKI ◽  
Masanobu CHIBA ◽  
Kaoru MITUHASHI ◽  
Tadashi ISHIZUKA
Keyword(s):  
Risk Assessment ◽  
Control System ◽  
Pneumatic Control ◽  
System Risk

Research of Hydrotronic Variable-Displacement Radial Piston Pump with Electro-Pneumatic Control

2010 ◽  
Vol 164 ◽  
pp. 37-40 ◽  
Author(s):  
Ryszard Jasiński
Keyword(s):  
Control System ◽  
Rate Control ◽  
Piston Pump ◽  
Programmable Logic ◽  
Pneumatic Control ◽  
Pump Flow Rate ◽  
Pneumatic Valves ◽  
Variable Displacement ◽  
Flow Rate Control ◽  
Pneumatic Cylinders

The paper presents the developed new electro-pneumatic control (pneumotronic) system for hydraulic fixed-displacement radial piston pump. Hydraulic fixed-displacement radial piston pump equipped with the proposed control system changes into hydrotronic variable-displacement radial piston pump. Pump flow rate control is realized by means of programmable logic controller, electro-pneumatic valves, pneumatic cylinders and a sensor.

Research on Pneumatic Control System of Box Unfolding and Closing Mechanism of Horizontal Type Boxing Line

2012 ◽  
Vol 605-607 ◽  
pp. 1589-1594
Author(s):  
Cheng Wen Chai ◽  
Ji Fei Cai
Keyword(s):  
Control System ◽  
Design Method ◽  
Pneumatic Control ◽  
Horizontal Type ◽  
Working Principle ◽  
Operation Control ◽  
Structure Scheme ◽  
Production Requirement ◽  
Sealing Device ◽  
Closing Mechanism

Automatic box unfolding and closing mechanisms are the important components of the horizontal type boxing line. The process principle of box unfolding and closing mechanisms was researched based on the production requirement of the boxing line. The structure scheme was brought out, which was mainly composed of box opening mechanism, box unfolding mechanism, posture keeping device, box closing mechanism and sealing device. The composition and working principle of pneumatic control system of the box unfolding and closing mechanisms was analyzed and the pneumatic sequential operation control circuitry with multi-cylinders was simulation designed and debugged by using the software FluidSim. The control system was also constructed of PLC module and its assistant components, whose program was compiled and simulated in the software GX Developer and Simulator. The theoretical basis for researching and developing the packing line was established by proposing the solution and design method of pneumatic control system driving the box unfolding and closing mechanisms.

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