Find this profile here: http://www.guru.com/freelancers/Circuit-Designer-Electrical-Engineer-Scientific-Computation/California/Los-Angeles-Long-Beach/391584
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Guru.com Profile - Novodyne Microelectronics, Inc. Find this profile here: http://www.guru.com/freelancers/Circuit-Designer-Electrical-Engineer-Scientific-Computation/California/Los-Angeles-Long-Beach/391584 |
| Screen name: | Novodyne Microelectronics, Inc. |
| Profile ID: | 391584 |
| Tagline: | Electrical & Mechanical Design from concept to final product. |
| Screen icon: |
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| Membership: | Basic Member |
| Photograph: |
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| Country: | United States |
| GMT: | Pacific Standard Time |
| Category rank: | 2684 in Engineering & CAD |
| Quality score: | 0.00 |
| Feedback: | None |
| Money (year): | $0.00 |
| Money (all time): | $100.00 |
| Min. rate/hour: | $45.00 |
| Min. project budget: | Not specified |
| Member since: | 01 Sep 2001 |
| Last sign In: | 21 Jan 2013 4:58 AM ET |
| Quotes submitted: | 0 in last 30 days |
| Work onsite: | Yes |
| Experience: | Not available |
| Highest degree: | Master's Degree |
| Experience level: | Industry Consultant |
| Business size: | Less than $50 million |
| Geo markets: | United States |
| Additional skills: | · Digital Signal Processing (DSP) devices and its application in motor control. · Continuous or discrete servo systems modeling and control system analysis. · Linear and Pulse Width Modulated (PWM) power amplifiers in motor control applications. · Rotary and linear motors in robotic applications. · Position, velocity, acceleration and torque feedback sensors. · Motorola and Intel microprocessor in embedded control application. · Complex Programmable Logic Devices (CPLD) and Field Programmable Gate Arrays (FPGA). · Electrostatic and electromagnetic noise reduction techniques in printed circuit board layout. · Statistical failure analysis techniques for electronic hardware. |
| Subcategories: | Integrated Circuit Design Electrical Scientific Computation |
| Industries: | Chemicals & Materials Technology & Internet |
| Highlights: | Summary of experiences:
Twenty four years of solid engineering experience in designing electronic and servo control systems from concept to final product, with strong theoretical background in control systems and hands-on experience in designing and developing electronic products utilizing DSP, MCUs, FPGAs, ADCs and DACs, and op amps, etc. Supervise electronic engineers and layout designers through all phases of design, packaging and printed circuit board fabrication. Qualifications: DSP and microprocessors based hardware design for embedded control applications. Continuous and discrete servo systems modeling, analysis, and design. Linear and PWM power amplifier design for motor control and switching power supply applications. High-speed logic design using TTL, FAST, FACT, LVDS, PECL logic families. Design knowledge of stepper/servo motor sizing and selection. Design knowledge of position, velocity, acceleration and torque feedback sensors. Complex Programmable Logic Devices and Field Programmable Gate Arrays. VHDL, QBASIC, Visual Basic, C, and assembly languages. DSP TMS32xxx and ADSP21xx series assembly code development tools. Lattice, Altera, and Actel CPLD and FPGA development tools. ORCAD and PROTEL schematic entry, board layout and routing tools. PSPICE and MICRO-CAP simulation and analysis tools. Fundamental RF design, stripline/microstrip technique, modulation, demodulation, etc., to 300 MHz. Mathlab and Mathcad mathematical analysis tools. Relex reliability and failure analysis tools. Microsoft Office and Project scheduling tools. EMI and RFI noise reduction techniques in printed circuit board design and layout. Statistical failure analysis techniques in electronic hardware design for military and space applications. Trough-hole and SMT multi-layer printed circuit board layout design. Excellent supervision, communication and writing skills. Professional experiences: Manpower Professional, Cypress CA April 2002 through May 30 2003 Contracted to HR TEXTRON Incorporation, Santa Clarita, CA as consulting electronic engineer to design VXI-bus based actuator controller and calibration printed circuit boards (PCB) for Space Shuttle Main Engine (SSME) Electro-Hydraulic actuators functional and calibration test-station. Both boards were laid out, assembled, tested and de-bugged under my supervision. The closed loop actuator controller PCB monitored in real time the SSME redundant actuators positions, output torques, pneumatic pressures, and oil temperatures using absolute rotary encoder, redundant Rotary Variable Differential Transformers (RVDT), load cells, and temperature sensors. Acquired measurements were reported back to test-station host computer through VXI backplane and IEEE-488 serial bus for further analysis. The code for microcontroller was written from the ground up, tested, and evaluated within a very tight five months schedule. Prepared electronic and motion control subassembly of HR Textron proposals for Boeing's un-manned aircraft fueling boom, fly-by-light un-manned flying vehicles and Bell Helicopter's actuator projects. The board designs employed the following devices and main circuit modules: ADUC812 micro-converter from Analog Devices with 8-Channel 12-Bit ADC + Dual 12-Bit DAC + 8K-Byte Flash MCU. IT9010 register-based VXI 1.4 compatible interface chip from Interface Technologies. Voltage controlled current sources with automatic gain control. RVDT's 10KHz sine-wave generator, signal conditioner and synchronous demodulator. RVDT's and actuator's linear power amplifiers. Standard V20 PALS providing digital filters and interface logic between ADUC812 and IT9010. State-variable bi-quad analog filters providing analog signal conditioning and wave-shaping functions. 8-channel analog multiplexer's matrix to route analog signals to A/D converters. Differential transmitters, receivers and optical isolators. Power Amplifier and mixed circuits simulation and design using PSPICE. Actuator dynamic modeling and simulation using PSPICE. Closed loop PID algorithm, theoretical/FEM analysis, and system-level simulation using PSPICE. Electronic Systems Innovation, Los Angeles October 2001 through April 2002 Contracted to Boeing Satellite Systems, El Segundo, CA as consulting electronic engineer to design following radiation hardened electronic circuits and printed circuit boards for satellite telemetry and command control application: Multiplexed 12-channel solar sensor trans-conductance amplifier module including 16-bit A/D converters and the digital control and interface circuitry. Discrete series pass 50 Watts voltage regulators with closed loop control capabilities generating 3.3V and 2.5V DC supplies with under and over voltage protection and digital health status indicators. Designed MIL-STD-1 553 based transformer coupled redundant serial communication channels. 192-channels analog and digital cross connect switch matrix utilizing analog and digital multiplexers including associated glue logic and parallel to serial UART interface. Circuit performance, worst-case stress and space survivability analysis using Microcap circuit simulation tool. Impedance matching, signal integrity and worst case timing analysis for the digital PCB layout. Integrated Micromachines, Inc., Monrovia, Ca 2000 - Aug. 2001 As chief electronic and manger of Integrated Micromachines electronic department I build and supervised an electronic design team and equipped the electronic department with the electronic design CAD tools. And established and equipped the first electronic design laboratory. Also, I designed and developed electronic system architectures and electrical specifications for all-optical 144X144 cross-connect switch and other company's new products. Following multi-layers surface mount printed circuit boards (PCB) are some of my hands-on design accomplishments: Temperature stabilized analog closed loop for 1X1 and 2X1 add/drop optical switches. ADSP2185 DSP based PCB for closed loop control of quad channels Optical Variable Attenuator (VOA). This design included analog modulation/demodulation with automatic gain control circuitry to generate analog position feedbacks from four independent RDVTs' position sensors. Time-multiplexed servo control DSP assembly codes for the above quad channels VOA system. Open loop non-multiplexed digital and analog controller PCB for 144 channels all-optical cross-connect switch with the host computer interface. Low noise photodiode sensor and amplifier. 144 channels 100dB optical power monitor PCB using logarithmic amplifiers (P/N: 4127 Burr-Brown hybrid logarithmic amplifier). Analytical characterization of sensor noise, from photodiode pre-amp through digitizing process. 144 channel data acquisition PCB to simultaneously sample, digitize and transfer logarithmic photo power monitoring board outputs analog signals to the host computer using 32-bit synchronous industry standard Front Panel Data Port (FPDP) serial data transfer protocol. This board included two Altera Acex 1K FPGA's and thirty-six quad channels high-speed simultaneous A/D converter (P/N: THS1206, Texas instrument, 6 MSPS A/D converters). Designed, developed and synthesized VHDL state machines and glue logic codes for the above 144 channels data acquisition board using Altera FPGA development tools. Complete PID servo algorithm design, including optimization for floating point DSP math. Tuning procedure to bring under-damped 2nd order system to target with no residual oscillation around target. Performed signal integrity and impedance matching analysis for high-speed digital PCB layout. Performed noise budget calculations and analyzed effect of temperature variation on the analog circuits using PSPICE modeling and simulation tool. Motoman, Inc., Cypress, Ca 1997 - Oct. 2000 Senior Electronic Engineer Designed dual processor (Motorola Power PC and Analog Devices DSP) microcontroller and power amplifier board controlling a Cartesian robot utilizing linear motors. Designed VHDL state machines and glue logic codes for the above board using Lattice 2128VE CPLD's. Developed time multiplexed real time servo control assembly codes for closed or open loop control of X/Y linear motors. Designed DSP based electronic board to decode 12-bits position feedback for X/Y linear motors moving on a two-dimensional grid array. Moog Schaiffer Magnetics, Chatsworth, CA 1993-1997 Sr. Electronic Engineer Designed embedded micro controller board using Intel 80196 processor for precision positioning solar panels in space. Develop control architecture and dynamic system simulations using MATLAB/SIMULINK software. Reliability analysis, MTBF prediction and fault tree development for space qualified electronic hardware. 3D Systems, Inc., Valencia, Ca 1989-1993 Senior Electronic Engineer Designed DSP (TMS32020) based X/Y laser scanning servo system utilizing stepping motors and micro stepping techniques. Designed printed circuit board to provide high resolution position information from off-the-shelf incremental rotary encoders. Designed printed circuit board for liquid level sensing and servo control utilizing optical quad cells position sensor. TRW/TECHNAR Division, Irwindale, Ca 1986-1989 Electronic Engineer Designed ISA bus data acquisition printed circuit board to acquire, analyze, and display air bag crash sensor data. Designed air bag controller module and diagnostic tools for use in production lines. Designed automatic air bag crash sensor burn-in and final functional test-stations for use in production lines. Photo-Sonics Inc., Burbank, Ca 1980-1986 Electronic Engineer Designed servo and power amplifier printed circuit board for use in controlling high-speed military cameras. Designed Intel 8080 processor based micro controller printed circuit board for use in remotely controlled military projectile tracking systems. |
| Work terms: | The professional has not written profile Work Terms. |