COTS Gyro evaluation for PICOSAT
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microelectromechanical systems↗
Engineering topics
Hayworth, K.
Publications and source records attributed to Hayworth, K..
A Highly Miniaturized Inertial Grade Gyroscope for Space Applications
The evolution of inertial grade gyroscopes for space applications represents well over 50 years of technology development and an investment of hundreds of millions of dollars. The workhorse product which represents the current state-of-the art for commercially available high performance devices is the Litton-Hemishperical Resonator Gyro (HRG) Inertial Measurement Unit (IMU). This product has a performance figure of merit of 0.003 deg/hr bias drift, a volume of 567 cubic inches, weighs 19 pounds, draws about 30 watts and costs over $1 million each. Clearly devices of this magnitude are not conducive to the minimized mass, volume, power, and cost constraints of outer planet missions. An approach to breaking these potential barriers is the use of Microelectromechanical Systems (MEMS) based inertial devices. Although substantially reduced in size, mass power and cost, this approach has produced devices in the tactical performance range of greater than 1 deg/hour bias drift. This level of performance satisfies the preponderance of high market volume requirements such as automotive and tactical munitions but does not meet the limited market quantity requirements for the high precision space based market. Because of the very limited size of the space based market, there is little economic incentive for commercial fabricators of tactical grade devices to address the necessary performance improvements. The Jet Propulsion Laboratory (JPL) in conjunction with Boeing Space Systems (BSS) is addressing this void to satisfy our mutual requirements in this area. The project objective to is to achieve 0.01 deg/hr performance in an IMU which is less than 10 cubic inches in volume, weighs less than 0.5 pounds, draws less than 1 watt and is available in volume production for less than $2500. Reductions of this magnitude will be mission enabling capabilities for a variety of anticipated outer planet mission attributes such as autonomous control and docking, formation flying and robotic outposts. The improved performance will be realized using improved relative precision fabrication, enhanced vibratory drive and sense designs, and statistical data analysis.
Wiberg, D. V.↗
Digitally Programmable Current-Mode Analog Fuzzy Membership Function Circuit
A digitally programmable current-mode analog fuzzy membership function circuit (MFC) has been designed, simulated and fabricated in a 0.5 micro-m CMOS technology.
implementation↗
High Performance Microgyros for Space Applications
This paper reports on the development of a high performance silicon bulk micromachined vibratory gyroscope designed for microspacecraft applications.
MEMS↗
Evolution of CMOS Circuits in Simulations and Directly in Hardware on a Programmable Chip
The paper introduces an approach to automated synthesis of CMOS circuits, based on evolution on a Programmable Transistor Array (PTA).
evolvable hardware reconfigurable hardware genetic↗
Towards On-board Synthesis and Adaptation of Electronic Functions: An Evolvable Hardware Approach
Autonomous space systems will need to adapt to new environments and perform new functions, in addition to those specified at launch.
adaptive↗
The Modeling Clay Approach to Bio-Inspired Electronic Hardware
The field of evolvable hardware or bio-inspired hardware holds the promise of automatically engineering complex electronic systems that remain adaptive and fault-tolerant during use.
Modeling Clay Electronic Hardware algorithm↗
Evolvable Hardware for Space Applications
This paper focuses on characteristics and applications of evolvable hardware (EHW) to space systems, and describes research directions and ongoing work at JPL.
Evolvable Hardware↗
Evolvable Hardware for Spacecraft Autonomy
Evolvable hardware is a recently proposed technology in which reconfigurable hardware under the control of and evolutionary (genetic) algorithm can automatically self-reconfigure into sonfigurations with the desired behavior.
digital↗