Erratum to “An Automatic Depth Control System for On-line Measurement of Spatial Variation in Soil Compaction, Part 3: Design of Depth Control System”

A microwave technique for the continuous on-line measurement of moisture content in wheat is described together with an automatic control system based on these measurements. The results from a prototype installation are given and the consequent improvement of flour parameters are discussed.

Download Full-text

Application of Machine Vision Technique in Plate Camber Control System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.139-141.2082 ◽

2010 ◽

Vol 139-141 ◽

pp. 2082-2086 ◽

Cited By ~ 1

Author(s):

Chun Yu He ◽

Zhi Jie Jiao ◽

Di Wu

Keyword(s):

Control System ◽

Steel Plates ◽

Measurement And Control System ◽

Plate Rolling ◽

Curvature Measurement ◽

Line Measurement ◽

Edge Location ◽

On Line ◽

And Control ◽

Measurement And Control

In plate rolling, the existence of some asymmetry rolling conditions, affects the distribution of transversal thickness of rolling pieces, leading to the occurrence of camber phenomenon, which in turn seriously affect the product's material yield. In this paper, based on the images of plates in the production line collected by camera, taking into account the requirements for on-line measurement, filtering noise from image information, use edge detection operator, Hough transform methods and sub pixel edge location method to identify the steel plates, have achieved in-line measurement of camber curvature of plate side. At the same time, combined with camber control model, we have developed camber curvature measurement and control system, realized the automatic correction control of camber curvature of rolling pieces in the production process. Field applications show that this method can reduce the human intervention, will limit the camber curvature of rolling pieces within a certain range, which has great significance for improving the product’s yield.

Download Full-text

Research of Precision Injection Control System Based on the on-Line Measurement of Polymer Melt Density

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.383-390.5136 ◽

2011 ◽

Vol 383-390 ◽

pp. 5136-5141

Author(s):

Hong Xu ◽

Da Ming Wu ◽

Qun Xong Zhu ◽

Ya Jun Zhang

Keyword(s):

Control System ◽

Polymer Melt ◽

System Structure ◽

Quality Factors ◽

Control Approach ◽

Line Measurement ◽

Injection Control ◽

On Line ◽

Melt Density ◽

Control Principle

Based on the quality factors of the precision injection product, the control system structure of precision injection molding product and proposes the on-line measurement of melt density which controls the injection weight is analyzed in this thesis. The important of the on-line measurement of melt density is shown in this paper. Then, the approach of off-line and on-line measurement of melt density is introduced. At last, the control approach and the precision injection control principle of using the on-line measurement of melt density is discussed also.

Download Full-text

An On-Line Measurement and Control System for Submerged Arc Spray Synthesis of TiO2 Nanoparticles

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2008.d249 ◽

2008 ◽

Vol 8 (2) ◽

pp. 503-509 ◽

Cited By ~ 1

Author(s):

Liang-Chia Chen ◽

Bao-Hong Ji

Keyword(s):

Control System ◽

Measurement System ◽

Particle Sizing ◽

Measurement And Control System ◽

Arc Spray ◽

Line Measurement ◽

On Line ◽

And Control ◽

Measurement And Control ◽

Submerged Arc

This article presents the development of an on-line measurement and control system for process characterization and optimization of the nanoparticle manufacturing process, called the submerged arc-spray nanoparticle synthesis system (SANSS). To achieve optimized control of particle uniformity, this research investigates the feasibility of employing optical fiber probe and the dynamic light scattering (DLS) technique to monitor and control particle sizes. According to the theory of DLS, an on-line nanoparticle sampling and measurement system was developed and integrated with the SANSS as an important step to verify the measurement performance of the proposed method. To examine the measurement accuracy of the developed system, calibrated polystyrene latex particles with known accurate sizes were employed to verify the particle sizing accuracy of the proposed system. The data conformity between the measurement results of TiO2 nanoparticles obtained by various methods, including TEM, a calibrated commercial particle sizing system and the on-line measurement system, has indicated that the developed method was feasible and effective.

Download Full-text

Development and Laboratory Evaluation of an Online Controlling Algorithm for Precision Tillage

Sensors ◽

10.3390/s21165603 ◽

2021 ◽

Vol 21 (16) ◽

pp. 5603

Author(s):

Yashar Sabouri ◽

Yousef Abbaspour-Gilandeh ◽

Aliakbar Solhjou ◽

Mohammad Shaker ◽

Mariusz Szymanek ◽

...

Keyword(s):

Control System ◽

Physical Properties ◽

Soil Compaction ◽

Hydraulic System ◽

Laboratory Evaluation ◽

Variable Depth ◽

Site Specific ◽

Experimental Platform ◽

Depth Control ◽

Sensor Activation

Soil compaction management relies on costly annual deep tillage. Variable-depth tillage or site-specific tillage modifies the physical properties of the soil at the required zones for the growth of crops. In this study, a depth control system was designed for the subsoiler of the tillage at various depths. For this purpose, an algorithm was written to investigate the subsoiler location and soil compaction. A program was also developed to implement this algorithm using Kinco Builder Software to control the subsoiler depth, which was evaluated on the experimental platform. In this study, four compression sensors were used at a distance of 10 cm up to a depth of 40 cm on the blade mounted at the front of the tractor. The data of these sensors were used as the input and compared with the pressure baseline limit (2.07 MPa), and with the priority to select the greater depth, the depth of subsoiler was determined. At all three modes of sensor activation (single, collective, and combined), this system was able to operate the hydraulic system of the tractor and place the subsoiler at the desired depth through the use of the position sensors.

Download Full-text