Bill Walters
Director of Research and Development

Steven Wu
Director of Mechanical Design

Since beginning at Scan Systems Corp. in 2003, Mr. Wu has used his many years experience in product development, product renovation and management to continue and improve Scan Systems’ dedication to excellence. Mr. Wu’s skill level and expertise have allowed him to excel at mechanical engineering and design and also in leading the mechanical engineering staff.

During his time with the company, Mr. Wu has worked diligently in developing new equipment from prototype to batch product model, including conceptual design, general arrangement, detail assembly and unit design, tolerance stack-up study, tight tolerance component design, and Q/A implementation.

In addition, Mr. Wu has renovated and increased efficiency of existing and old equipment and analyzed and reproduced manufacturing designs to develop them into assembly drawings. Most notably, Mr. Wu brought Scan Systems a system patent for creative new design in May 2005.

In addition to his accomplishments as a mechanical engineer, Mr. Wu has managed and led his engineering team to success by establishing and overseeing the Engineering Department, scheduling and managing projects, leading the staff through all aspects of design and development, working with vendors, manufacturer support, and machinery repair.

Having worked at such places as National Oilwell, Applegate Industrial Materials Inc., Louisiana State University’s Industrial and Manufacturing Systems Engineering Department and Nanchang Aircraft Manufacturing Company, Mr. Wu brings many years of notable experience to the Scan Systems team. A few of Mr. Wu’s earlier accomplishments include working on the Iron Roughneck machine, the Horizontal Bucking Machine Unit and the Devon Energy China project while at National Oilwell. He has also worked on N5 and CJ-6A aircrafts, designing and manufacturing bellows-forming machines, and developing new products and repair methods.

John Tolman
Senior Design Engineer - Research and Development

A graduate of Brigham Young University, Mr. Tolman brings over 30 years of engineering and business management experience to Scan Systems Corp. Having successfully managed both software and hardware engineering projects, Mr. Tolman continues his successful career in research and development for each of our four divisions.

Mr. Tolman’s early work includes NASA’s Skylab and Viking space projects. Designing, assembling and testing redundant diode components used to dampen back EMF on the many solenoids and relays used on the Viking instrument. Mr. Tolman also built and tested ground control equipment for the calibration rockets used during Skylab’s ascent.

Mr. Tolman has the highest level of skill in engineering electronic circuit design with particular expertise in analog circuits, hi-speed amplifiers, digital circuits, and embedded processors. His Software skills include system level design and hands-on programming in ‘C’ and assembly language.

Working with Mr. Zeigler, Mr. Tolman developed the airborne LiDAR sensor systems. During development Mr. Tolman specialized in the design of high-speed analog circuits including high-gain detectors with temperature compensation, increased signal to noise ratio, constant fraction discriminator (CFD) for precision pulse timing, laser pulse time-of-flight dependent amplifiers, sample and hold circuits, and high resolution digitized amplitude sampling.

Some of Mr. Tolman’s other projects include the design and production of one of the first business oriented microcomputers, he also designed one of the first truly portable computers. Based on the Intel 8085A microprocessor and running DOS, the Electronic Notebook used the Texas Instruments “Bubble Memory” module as removable disk modules. In addition, Mr. Tolman developed a Remote Starting device for Internal Combustion Engines using Radio Frequency circuitry, and designed and implemented one of the first parole home arrest systems.

John Zeigler
Senior Design Engineer - Research and Development

After receiving a Master of Science in Electrical Engineering from Texas A&M University, Mr. Zeigler has gained extensive experience in applying new technologies to real world problems in diverse industry segments including remote sensing electric utilities, medical instrumentation and high energy physics.

Mr. Zeigler has focused his skills on development of multi-disciplinary systems incorporating computer based data acquisition, control, and monitoring functions. One of his great achievements was his extensive involvement in the development of a Light Detection and Ranging (LiDAR) system that earned the first-ever achievement award given by NASA Goddard Space Flight Center in the National Resources category.

Mr. Zeigler has also performed site-specific analysis of the feasibility for large-scale Superconducting Magnetic Energy Storage (SMES) units to increase utility transmission system stability and capacity and to provide ancillary services such as voltage and frequency control, load following, short-term spinning reserve, and sub-synchronous resonance damping.

In addition, Mr. Zeigler developed components and subsystems for Magnetic Resonance Imaging (MRI) and Magnetic Resonance Spectroscopy (MRS) magnets for medical imaging and research applications. The selected sub systems were used in the development of the world’s first passive, iron shielded MRI magnets.

Mr. Zeigler has published over 30 articles dealing with subjects in superconductivity, high field superferric magnets and other related topics. Mr. Zeigler’s extensive experience and knowledge is what helps make Scan Systems Corporation an evolutionary company creating revolutionary products.

Jenny Xiong
Drafting Supervisor