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Penglei DAI

Penglei DAI

Mechanical Engineer

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location of Penglei DAIGreater Sydney Area

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  • Timeline

  • About me

    Lead Engineer at IQM Systems | PhD | IoT | LoRaWAN

  • Education

    • Dalian Jiaotong University

      2003 - 2007
      Bachelor of Engineering - BE Mechanical and Electronic Engineering Excellent Graduate

      Excellent GraduateSelected Coursework: Advanced Mathematics, Engineering Graphing, Mechanical Principle, Electrical Technology and Electrical Engineering, Mechanical and Electrical Transmission Control, Mechatronic System Design, Digital Circuit Design and Application, Practical Circuit of Electromechanical System, C Language Programming, etc.

    • UNSW

      2013 - 2016
      Doctor of Philosophy - PhD Mechatronics, Robotics, and Automation Engineering

      Activities and Societies: Conference Presentation: 2014 Australasian Conference on Robotics and Automation (ACRA) Topic: Path Planning and Force Control of a 4WD4WS Vehicle 2015 UNSW Australia Research Roadshow in China Topic: Autonomous Ground vehicles 2016 China (Changzhou) International Technological Innovation & Cooperation Conference Topic: Driverless Ground Vehicles In my PhD stage, my research interests include autonomous systems, 4WS4WD vehicles, and motion optimisation. Ph.D. Thesis Title: “Path Generation and Force Control for Path Following of a 4WS4WD Vehicle”1. Designed and manufactured a novel type of 4WS4WD vehicle incorporating force sensors. This vehicle has four independent wheels that can be steered and driven individually.2. Developed a kinematic model and a modular dynamic model composed of vehicle body dynamic model, driving… Show more In my PhD stage, my research interests include autonomous systems, 4WS4WD vehicles, and motion optimisation. Ph.D. Thesis Title: “Path Generation and Force Control for Path Following of a 4WS4WD Vehicle”1. Designed and manufactured a novel type of 4WS4WD vehicle incorporating force sensors. This vehicle has four independent wheels that can be steered and driven individually.2. Developed a kinematic model and a modular dynamic model composed of vehicle body dynamic model, driving unit dynamic model and tire model.3. Proposed a new path generation method to smooth the rough reference paths that have sharp corners and discontinuous curvature.4. Developed a control method using Particle Swarm Optimization (PSO) to facilitate the independent force and steering control at four individual wheels of a 4WS4WD Vehicle.5. Proposed a control method integrating Sliding Mode Control (SMC) and PSO to combine thekinematic model based steering control and the dynamic model based force control. Show less

    • Dalian University of Technology

      2007 - 2010
      Master of Engineering - MEng Mechatronic Engineering

      Research topic: Wafer handling robotsCoursework subjects: Electromechanical, Robot Mechanism, Robot Design and Application, Intelligent Control Theory and Technology, Automatic and Intelligent Measurement Techniques, Modern Technique of Testing and Control, etc.Research activities:1. Developed the magnetic analysis model for dual magnetic fluid seal, and obtained the optimalvalues of model parameters that affect the seal differential pressure.2. Designed a new type of wafer… Show more Research topic: Wafer handling robotsCoursework subjects: Electromechanical, Robot Mechanism, Robot Design and Application, Intelligent Control Theory and Technology, Automatic and Intelligent Measurement Techniques, Modern Technique of Testing and Control, etc.Research activities:1. Developed the magnetic analysis model for dual magnetic fluid seal, and obtained the optimalvalues of model parameters that affect the seal differential pressure.2. Designed a new type of wafer handling robot with dual magnetic fluid seal.3. Designed a novel type of wafer handling robot with triaxial magnetic fluid seal, which hasthree degrees of freedom, namely R, θ and Z, to transport wafers in a vacuum environment.4. Designed and manufactured an experimental device for triaxial magnetic fluid seal, by whichthe validity of triaxial magnetic fluid seal structure was verified. Show less

  • Experience

    • SANY Heavy Equipment Co., Ltd

      May 2010 - Nov 2011
      Mechanical Engineer

      1. Participated in a project entitled “Hydraulic System Design for Coal Mining Machine of 1720kw”. Took part in the hydraulic system design of coal cutter, and engaged in the installation of system.2. Participated in the design of cylinders for coal mining machines, including cylinders for 1180 coal cutter, 700A coal cutter and 500 coal cutter.

    • UNSW

      Jul 2014 - Dec 2015
      Laboratory Demonstrator

      Course: Modelling and Control of Mechatronic Systems1. Guided and assessed students in three laboratory experiments, namely “Modelling of a Monorail Crane”, “Design of a Speed Controller” and “Design of a Position Controller”.2. Marked the students’ lab reports for laboratory experiments

    • UNSW

      Mar 2017 - Feb 2018
      Research Associate

      Project Title: Autonomous Concrete Cutting MachineSponsor Name: Makinex Pty Ltd and Department of Industry, Innovation and ScienceIntroduction: This project is a collaborative project sponsored by Makinex Pty Ltd and Department of Industry, Innovation and Science. Within 7 months, I successfully developed the first prototype that can conduct autonomous concrete cutting, from preliminary sketches to a real machine. According to the test results outdoor, the concrete saw of this prototype can accurately follow a straight laser line with offset errors within 3 mm.My Main Duties:1. Completed the mechanical design works for upgrading a manual operated concrete cutting machine to an autonomous concrete cutting machine.2. Worked out the configuration of the whole autonomous system, and selected hardwares including DC motors, linear actuator, DMC controller, sensors, etc.3. Designed, wired up and tested electronic circuit boards for voltage converting, control of indicator lights and emergency stop.4. Assembled mechanical parts, wired up the system control box, and tested sensors including action switches, ultrasonic sensors, encoders, hall-effect speed sensor and laser receivers.5. Completed the control program for autonomous concrete cutting machine, which can control the cutting depth for concrete saw, drive the machine move forward and backward under the protection of emergency stop sub-system, and guide the machine to cut accurately along a straight line projected by a line laser.6. Carried out the outdoor tests for the cutting machine, which demonstrated the high cutting accuracy along a straight laser line, with offset errors within 3 mm. Show less

    • University of Technology Sydney

      Feb 2018 - Jul 2020
      Postdoctoral Research Fellow

      Research Project I: Position/force Control of an Intervention Autonomous Underwater Vehicle Main Duties:• Developed a Sliding Mode Impedance Controller for a 9 DOF I-AUV that interacts with underwater environment. In simulations, the controller can achieve position/force control of the I-AUV, considering the external disturbances and model uncertainties.• Designed, assembled and test a force sensing device, including the force sensor, mechanical components and electronic circuit. This device is used on the I-AUV to measure the contact force and interact with underwater wall in experiments.• Carried out underwater experiments for the contact intervention of an I-AUV named SPIR3.0 in the lab of CAS in UTS. The experimental results obtained verified the validity of the controller designed for I-AUV.Research Project II: Development of Grit-blasting Robots for Commercial Cargo Ship-hull Cleaning (Stage one: Feasibility study) Main Duties:• Made conceptual designs of blasting robots that are feasible to conduct autonomous cleaning of ship hulls.• Conducted mathematical modelling and computer simulations to verify the conceptual designs and solutions proposed.• Composed reports for main tasks of the current stage, and completed the proposal for the next stage of the project. Show less

    • IQM Systems

      Feb 2021 - now

      • Manager – IoT Products & Solutions

        Jun 2021 - now

      • Lead Product Engineer

        Feb 2021 - May 2021

  • Licenses & Certifications