ORCID Profile
0000-0001-9757-9028
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In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Robotics And Mechatronics | Electrical and Electronic Engineering | Mineral Processing/Beneficiation | Decision Support and Group Support Systems | Resources Engineering and Extractive Metallurgy | Mining Engineering | Control Systems, Robotics and Automation
Beneficiation or Dressing of Iron Ores | Mining and Extraction of Precious (Noble) Metal Ores | Mining and Extraction of Copper Ores | Other |
Publisher: Elsevier BV
Date: 08-2015
Publisher: Elsevier BV
Date: 03-2008
Publisher: SPIE
Date: 02-04-2004
DOI: 10.1117/12.523573
Publisher: Elsevier BV
Date: 04-2020
Publisher: Emerald
Date: 31-07-2021
DOI: 10.1108/JEDT-12-2020-0541
Abstract: In the mining industry, a run-of-mine (ROM) stockpile is a temporary storage unit, but it is also widely accepted as an effective method to reduce the short-term variations of ore grade. However, tracing ore grade at ROM stockpiles accurately using most current fleet management systems is challenging, due to insufficient information available in real time. This study aims to build a three-dimensional (3D) model for ROM stockpiles continuously based on fine-grained grade information through integrating data from a number of ore grade tracking sources. Following a literature review, a framework for a new stockpile management system is proposed. In this system, near real-time high-resolution 3D ROM stockpile models are created based on dump/load locations measured from global positioning system sensors. Each stockpile model contains a group of layers which are separated by different qualities. Acquiring the geometric shapes of all the layers in a stockpile and cuts made by front wheel loaders provides a better understanding about the quality and quality distribution within a stockpile when it is stacked/reclaimed. Such a ROM stockpile model can provide information on predicating ore blend quality with high accuracy and high efficiency. Furthermore, a 3D stockyard model created based on such ROM stockpile models can help organisations optimise material flow and reduce the cost. The modelling algorithm is evaluated using a laboratory scaled stockpile at this stage. The authors expect to scan a real stockpile and create a reference model from it. Meanwhile, the geometric model cannot represent slump or collapse during reclaiming faithfully. Therefore, the model is expected to be reconcile monthly using laser scanning data. The proposed model is currently translated to the operations at OZ Minerals. The use of such model will reduce the handling costs and improve the efficiency of existing grade management systems in the mining industry. This study provides a solution to build a near real-time high-resolution multi-layered 3D stockpile model through using currently available information and resources. Such novel and low-cost stockpile model will improve the production rates with good output product quality control.
Publisher: National Research and Innovation Agency
Date: 29-07-2022
DOI: 10.14203/J.MEV.2022.V13.95-100
Abstract: This paper concerns enhancing a lead detection sensor using a combination of polypyrrole (PPy), Nafion (N), and ionic liquid (IL) with thick-film or screen-printing technology on sensitive material-based carbon electrodes. Electrode characterization using a scanning electron microscope (SEM) was conducted to see the morphology of sensitive materials, showing that the spherical particles were distributed evenly on the electrode surface. Analysis using energy dispersive spectroscopy (EDS) shows that the element's atomic composition is 84.92 %, 8.81 %, 6.26 %, and 0.01 % for carbon, nitrogen, oxygen, and bismuth, respectively. Potentiostat measurement with the ambient temperature of 25 °C on a standard lead solution with concentration ranging from 0.05 to 0.5 mg/l yields an average output voltage ranging from 2.16 to 2.27 V. It can be concluded that the sensor is able to detect lead with a sensitivity of 0.21 V in each addition of solution concentration (mg/l) and give an 84 % concentration contribution to the voltage.
Publisher: Elsevier BV
Date: 12-2013
Publisher: IEEE
Date: 06-2010
Publisher: IEEE
Date: 08-2012
Publisher: Elsevier BV
Date: 10-2020
Publisher: MDPI AG
Date: 09-11-2022
DOI: 10.3390/S22228632
Abstract: Structural optimisation of robotic manipulators is critical for any manipulator used in confined semi-structured environments, such as in agriculture. Many robotic manipulators utilised in semi-structured environments retain the same characteristics and dimensions as those used in fully-structured industrial environments, which have been proven to experience low dexterity and singularity issues in challenging environments due to their structural limitations. When implemented in environments other than fully-structured industrial environments, conventional manipulators are liable to singularity, joint limits and workspace obstacles. This makes them inapplicable in confined semi-structured environments, as they lack the flexibility to operate dexterously in such challenging environments. In this paper, structural optimisation of a hyper-redundant cable-driven manipulator is proposed to improve its performance in semi-structured and challenging confined spaces, such as in agricultural settings. The optimisation of the manipulator design is performed in terms of its manipulability and kinematics. The lengths of the links and the joint angles are optimised to minimise any error between the actual and desired position/orientation of the end-effector in a confined semi-structured task space, as well as to provide optimal flexibility for the manipulators to generate different joint configurations for obstacle avoidance in confined environments. The results of the optimisation suggest that the use of a redundant manipulator with rigid short links can result in performance with higher dexterity in confined, semi-structured environments, such as agricultural greenhouses.
Publisher: IOP Publishing
Date: 03-05-2019
Publisher: SPIE
Date: 27-03-2008
DOI: 10.1117/12.790789
Publisher: Emerald
Date: 08-2004
DOI: 10.1108/01439910410541873
Abstract: Micromanipulation has enabled numerous technological breakthroughs in recent years, from advances in biotechnology to microcomponent assembly. Micromotion devices commonly use piezoelectric actuators (PZT) together with compliant mechanisms to provide fine motions with position resolution in the nanometre or even sub‐nanometre range. Many multiple degree of freedom (DOF) micromotion stages have parallel structures due to better stiffness and accuracy than serial structures. This paper presents the development of a three‐DOF compliant micromotion stage with flexure hinges and parallel structure for applications requiring motions in micrometres. The derivation of a simple linear kinematic model of the compliant mechanism is presented and simulation results before and after calibration are compared with results from finite element (FE) modeling and experiments. The position control system, which uses an experimentally determined constant‐Jacobian, and its performance are also presented and discussed.
Publisher: Elsevier BV
Date: 06-2022
Publisher: IEEE
Date: 06-2011
Publisher: Elsevier BV
Date: 06-2009
Publisher: IOP Publishing
Date: 06-06-2013
Publisher: Elsevier BV
Date: 12-2019
Publisher: The Electromagnetics Academy
Date: 2018
Publisher: Elsevier BV
Date: 12-2013
Publisher: IEEE
Date: 07-2009
Publisher: SPIE
Date: 26-12-2008
DOI: 10.1117/12.814074
Publisher: Elsevier BV
Date: 09-2021
Publisher: IEEE
Date: 05-2012
Publisher: Elsevier BV
Date: 04-2008
Publisher: IEEE
Date: 12-2012
Publisher: Springer International Publishing
Date: 2019
Publisher: IEEE
Date: 2006
Publisher: Elsevier BV
Date: 04-2006
Publisher: AIP
Date: 2009
DOI: 10.1063/1.3256246
Publisher: ASME International
Date: 07-10-2022
DOI: 10.1115/1.4055720
Publisher: The Electromagnetics Academy
Date: 2019
Publisher: Elsevier BV
Date: 08-2013
Publisher: Springer Science and Business Media LLC
Date: 08-05-2019
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 04-2008
Publisher: IEEE
Date: 05-2009
Publisher: Elsevier BV
Date: 05-2013
Publisher: Elsevier BV
Date: 03-2019
Publisher: IOP Publishing
Date: 06-08-2009
Publisher: Elsevier BV
Date: 10-2010
Publisher: Elsevier BV
Date: 07-2015
Publisher: Elsevier BV
Date: 11-2022
Publisher: IEEE
Date: 06-2008
Publisher: AIP Publishing
Date: 04-2014
DOI: 10.1063/1.4871295
Abstract: Smart actuators are the key components in a variety of nanopositioning applications, such as scanning probe microscopes and atomic force microscopes. Piezoelectric actuators are the most common smart actuators due to their high resolution, low power consumption, and wide operating frequency but they suffer hysteresis which affects linearity. In this paper, an innovative digital charge lifier is presented to reduce hysteresis in piezoelectric stack actuators. Compared to traditional analog charge drives, experimental results show that the piezoelectric stack actuator driven by the digital charge lifier has less hysteresis. It is also shown that the voltage drop of the digital charge lifier is significantly less than the voltage drop of conventional analog charge lifiers.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2008
Publisher: Springer Science and Business Media LLC
Date: 10-05-2009
Publisher: SPIE
Date: 02-04-2004
DOI: 10.1117/12.522258
No related organisations have been discovered for Tien-Fu Lu.
Start Date: 05-2009
End Date: 12-2012
Amount: $78,420.00
Funder: Australian Research Council
View Funded ActivityStart Date: 08-2020
End Date: 08-2026
Amount: $3,703,664.00
Funder: Australian Research Council
View Funded Activity