OBJECTIVE
I am seeking a full time position in fields of controls, fluid power, robotics, mechatronics, automotive, process automation and instrumentation.
SUMMARY
I am a mechanical engineer and an electrical engineer with 8 years experience working on challenging projects and developing innovative solutions. I am highly experienced in system modeling, advanced control design, hydraulics, robotics, real time implementations, DSP, firmware development, circuit design and embedded system. I enjoy working in team environment or individually. Among other things, I am highly creative, self-motivated, organized and determined to achieve the goals.
EDUCATION
Ph.D., Mechanical Engineering May 2011
Georgia Institute of Technology, Atlanta, GA, USA

M.S., Electrical and Computer Engineering December 2008
Georgia Institute of Technology, Atlanta, GA, USA

M.S., Mechanical Engineering March 1998
Tsinghua University, China

B.S., Mechanical Engineering July 1995
Tsinghua University, China

PROFESSIONAL EXPERIENCE
Confidential,
(Charlotte, NC, USA) May 2011– present
System Engineer:
Project: Electro-Hydraulic-Actuator for a Crane System
§ Design verification: a few serious design mistakes, including valve manifold designs, control algorithms and the duty-cycle capacity, have been identified by implementing numerical simulation methods. The simulation results were highly consistent with experimental results and provided guidance to improve designs.
§ Control optimization: Conducted research on algorithms to shorten duty cycles under constrains of system capacities, energy efficiency and vehicle safety.

Project: Electro-Hydraulic-Actuator for wheel VOLVO loaders and excavators
§ Mode switching instability: Developed control algorithms and a hydraulic circuit solution to inhibit cylinder pressure oscillations and to improve the system stability.
§ Performance verifications: Led numerical simulations and experiments to evaluate system’s energy efficiency, robustness and maximum performance.
§ Energy management: Currently conducting research on energy management policy and control algorithms.
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Project: Hardware in the Loop Simulation
§ Current developing a hydraulic test rigs for Electro-Hydraulic-Actuator developments.

Confidential,
Atlanta, GA, USA) August 2005 – May 2011
Graduate Research Assistant
§ Developed a novel hydraulic circuit for single rod cylinders (Patented): The circuit is designed for pump displacement controlled systems and can be operated in all four quadrants, resulting in a larger stable region than conventional approaches. A compensation algorithm was implemented that not only ensures the circuit’s stability, but also increases actuator tracking performance.
§ Developed adaptive robust control algorithm: The proposed method has a faster parameter convergence rate, better stability and improved numerical efficiency than traditional approaches, when the system suffers from measurement noise. The controller offers guaranteed tracking performance characteristics under disturbances. The algorithm was implemented on a displacement controlled actuator and validated by experimental results.
§ Applied singular perturbations to hydraulic controls to account for dynamic stiffness and fluid bulk modulus uncertainty. The control effort comprises of low frequency signals, thus it is well suited for real time control. The developed algorithm was implemented and validated in physical experiments.
§ Developed a hybrid adaptive control algorithm: The method has a faster parameter convergence rate and higher calculating efficiency than traditional approaches. Furthermore, the system’s minimum phase characteristic still holds, thus the system can achieve desired trajectory tracking. The method is well suited for real time control and is validated by experiments.
§ Developed a displacement controlled actuator test-bed. The test-bed works under real time control using Simulnk Real Time Workshop. The system utilizes CAN-Network for system communications, and load and the electric motor speed can be varied to emulate operating scenarios.
§ Developed hydraulic hardware in the loop simulation test-bed. By controlling the electrical motors and the hydraulic pumps simultaneously, desired hydraulic pressure and flow can be applied to a test article.

Confidential,
(Beijing, China) January 2000 – May 2005
System Engineer
§ Implemented patented signal processing algorithms, e.g. Dolby®, on ESS chip series.
§ Developed hardware–including a QAM modulator, demodulators and a PCI transmitter card–and corresponding software for DVB-C project (Digital Video Broadcasting on Cable)
§ Developed an Anti-Shock algorithm used for automobile DVD players
§ Developed an internal debug tool for DSP software developments

Confidential,
January 2000
Assistant Research Professor
§ Developed a PCI transmitter card for image setters used in print industry
§ Developed the testing software and system driver for the PCI card

Confidential,
May 1996 – September 1996
Research Assistant & Lecturer
§ Repaired and gauged petroleum well testing equipments
§ Designed a coil connector which was used to transmit measurement signals and switch power of underground subsystems
§ Prepared and gave lectures, topics included Circuit Design and Measurement Theory

Confidential,
(Beijing, China)
Graduate Research Assistant: (September 1995 – March 1998)
§ Developed temperature and pressure sensors that are used for petroleum well testing
§ Developed a multi-channel transmission protocol for petroleum well testing communication

Confidential,
(September 1994 – July 1995)
§ Finger force detectors: Developed a force-sensing unit using a piezoelectric sensor. The unit is a part of a prosthetic hand
§ Developed a speed controller for electrical motors in order to increase the system power factor
§ Developed a force feedback controller used for cotton processing machines
3/3

REPRESENTATIVE PUBLICATIONS
1. Wang, L., Book, W., Huggins, J., “Applying Singular Perturbation Theory to Hydraulic Pump Control,” IEEE/ASME Transactions on Mechatronics, 2012, Vol 17, Issue 2, p251- 259.
2. Wang, L., Book, W., Huggins, J., “A Hydraulic Circuit for Single Rod Cylinders," ASME Journal of Dynamic Systems, Measurement and Control, 2012, Vol 134, Issue 1, 011019.
3. Wang, L., Book, W., “Using Leakage to Stabilize a Hydraulic Circuit for Pump Controlled Actuators”, ASME Journal of Dynamic Systems, Measurement and Control, (conditionally accepted)
4. Wang, T., Ding, T., Wang, L., “A Method for Improving the Anti-interference Ability of Hall Current Sensors,” Journal of Tsinghua University (Science and Technology), 1995, v35 (S2): 106-110.
5. Wang, L., Book, W., Huggins, J., “A Control Approach with Application to Variable Displacement Pumps,” Proceedings of IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM2009), Singapore (2009).
6. Wang, L., Book, W., Huggins, J., “Adaptive Robust Control of Hydraulic Robots with Recursive Least Squares,” Proceedings of ASME Dynamic Systems and Controls Conference (DSCC2009), Hollywood, CA (2009).
7. Wang, L., Book, W., “Adaptive Robust Control of Variable Displacement Pumps,” 6th FPNI PhD Symposium, IN, USA (2010)
8. Wang, L., Book, W., “A Hydraulic Circuit with Dynamical Compensations,” The 52nd National Conference on Fluid Power, Las Vegas, USA (2011).

PATENT
1. Wang, L., Book, W., A Flow Control Circuit with Dynamical Compensations. Provisional Patent No: 61,604,214

HONORS AND AWARDS
1. The Third Class Science & Technology Award, Ministry of Education of the P.R. China, 1996
2. The Best Thesis Award, Department of Precision Instruments and Mechanology, Tsinghua University, 1995
3. Excellent Students Fellowship, Tsinghua Univeristy, 1993-1997
4. The First Class Award of Physics Competition of Yunan Province, China, 1989

SKILLS Programming:

C/C++, ASM, Verilog, VHDL, Fortran, Pascal

Software:

Office tools, Visual Studio, MATLAB, AutoCAD, SIMULNK, ABAQUS, Solid Edge, Mathmatica, Pro/E, Easy5

Hardware:

Analog, Digital, RF circuits; Metal working equipments, e.g. lathes, mills