Briefs: Medical
A Miniaturized Video System for Monitoring Drosophila Behavior

Long-term spaceflight may induce a variety of harmful effects in astronauts, resulting in altered motor and cognitive behavior. The stresses experienced by humans in space — most significantly weightlessness (microgravity) and cosmic radiation — are difficult to accurately...

Briefs: Information Technology
Evolutionary Computational Methods for Identifying Emergent Behavior in Autonomous Systems

A technique based on Evolutionary Computational Methods (ECMs) was developed that allows for the automated optimization of complex computationally modeled systems, such as autonomous systems. The primary technology, which enables the ECM to find optimal...

Briefs: Information Technology
Sampling Theorem in Terms of the Bandwidth and Sampling Interval

An approach has been developed for interpolating non-uniformly sampled data, with applications in signal and image reconstruction. This innovation generalizes the Whittaker-Shannon sampling theorem by emphasizing two assumptions explicitly (definition of a band-limited function and...

Briefs: Information Technology
Spatial Query for Planetary Data

Science investigators need to quickly and effectively assess past observations of specific locations on a planetary surface. This innovation involves a location-based search technology that was adapted and applied to planetary science data to support a spatial query capability for mission operations software.

Briefs: Information Technology
Optimal Padding for the Two-Dimensional Fast Fourier

One-dimensional Fast Fourier Transform (FFT) operations work fastest on grids whose size is divisible by a power of two. Because of this, padding grids (that are not already sized to a power of two) so that their size is the next highest power of two can speed up operations. While this works...

Briefs: Information Technology
Safe Onboard Guidance and Control Under Probabilistic Uncertainty

An algorithm was developed that determines the fuel-optimal spacecraft guidance trajectory that takes into account uncertainty, in order to guarantee that mission safety constraints are satisfied with the required probability. The algorithm uses convex optimization to solve for...

Briefs: Information Technology
Hidden Statistics of Schrödinger Equation

Work was carried out in determination of the mathematical origin of randomness in quantum mechanics and creating a hidden statistics of Schrödinger equation; i.e., to expose the transitional stochastic process as a “bridge” to the quantum world. The governing equations of hidden statistics would...

Briefs: Information Technology
Higher Order Mode Coupling in Feed Waveguide of a Planar Slot Array Antenna

A simple technique was developed to account for the higher order mode coupling between adjacent coupling slots in the feed waveguide of a planar slot array. The method uses an equation relating the slot impedance to the slot voltage and a reaction integral involving the...

Briefs: Electronics & Computers
Wireless Orbiter Hang-Angle Inclinometer System

A document describes a system to reliably gather the hang-angle inclination of the orbiter. The system comprises a wireless handheld master station (which contains the main station software) and a wireless remote station (which contains the inclinometer sensors, the RF transceivers, and the remote...

Briefs: Information Technology
Meteoroid/Orbital Debris Shield Engineering Development Practice and Procedure

A document describes a series of models created for the determination of the probability of survival of critical spacecraft components from particle strike damage caused by hyper-velocity impact of meteoroids and/or orbital debris. These models were integrated with...

Briefs: Physical Sciences
Internal Electrostatic Discharge Monitor — IESDM

A document discusses an innovation designed to effectively monitor dielectric charging in spacecraft components to measure the potential for discharge in order to prevent damage from internal electrostatic discharge (IESD). High-energy electrons penetrate the structural materials and shielding...

Briefs: Physical Sciences
Self-Balancing, Optical-Center-Pivot, Fast-Steering Mirror

A complete, self-contained fast-steering-mirror (FSM) mechanism is reported consisting of a housing, a mirror and mirror-mounting cell, three PZT (piezoelectric) actuators, and a counterbalance mass. Basically, it is a comparatively stiff, two-axis (tip-tilt), self-balanced FSM. Prior...

Podcasts
Dr. Dale P. Cruikshank, Astronomer and Planetary Scientist, NASA Ames Research Center, Moffett Field, CA

Dale P. Cruikshank is an astronomer and planetary scientist in the Astrophysics Branch at Ames Research Center. His research specialties are spectroscopy and radiometry of planets, asteroids, satellites, and other bodies in the solar system....

Dale P. Cruikshank is an astronomer and planetary scientist in the Astrophysics Branch at Ames Research Center. His research specialties...

Features: Photonics/Optics
Adhesives for Optical Assembly

Adhesives deliver excellent performance on a range of materials used to manufacture optical components, including glass, metal, ceramic and most plastics. By their very nature, adhesives allow devices to be...

Medical equipment motion control runs the gamut from electric wheelchair motion to heart assist pumps. This article will focus on the segment consisting of medical laboratory instruments....

At Concordia Station in Antarctica, there is a telescope mount that has been operating for a few years. Recently, there was a new record temperature at the Dome C site:...

In the general construction industry, many different parts are cut from sheet metal and then welded together on a large machine or vehicle. The trouble arises when the sheets are...

Products: Robotics, Automation & Control
Multi-Axis Servo Drive

Galil Motion Control (Rocklin, CA) has announced the AMP- 43240 4-axis servo drive that provides up to 750W per axis. It resides inside the DMC-4040 or DMC-4143 4-axis motion controller enclosure. The packaging of the...

Products: Robotics, Automation & Control
Motor-Control Module

STMicroelectronics (Geneva, Switzerland), has announced the SPIMD20 motor-control module that mounts directly on the motor, in addition to providing connection via industrial Ethernet. The unit can drive brushless...

Products: Robotics, Automation & Control
DC Gear Motors

Nidec Copal (USA) Corp. (Torrance, CA) has introduced a RoHS family of four 12-mm miniature DC gear motors that develop high shaft torque ranging from 0.28 oz-in to 6.94 oz-in. Rated shaft speeds range from 1400 rpm to 40 rpm....

Products: Robotics, Automation & Control
Accelerometer

Dytran Instruments (Chatsworth, CA) has introduced the model 3091A, an IEPE accelerometer. It is offered with a range of 500g, 100 mV/g sensitivity, and an upper frequency response of 1,000 Hz (±5%). As an IEPE sensor, the...

Products: Robotics, Automation & Control
Planetary Gearheads

A series of RTX precision planetary gearheads from Sterling Instrument (New Hyde Park, NY) features high-torque design and are offered in standard NEMA sizes 60 and 90. These 36 gearheads, identified as the S9160AMRTX and...

Products: Robotics, Automation & Control
Speed Controller

The C100A Variable Speed Controller from Fluid Metering (Syosset, NY) provides a control interface for the company’s Variable Speed Pumps. The C100A features both manual speed adjustment using a front-panelmounted rotary...

Products: Robotics, Automation & Control
Control Module

The ACOPOSmicro from B&R Industrial Automation Corp. (Roswell, GA) offers support for two servo motors, allowing users to integrate different drive types. The architecture enables changeover from a stepper to a servo motor,...

Products: Robotics, Automation & Control
Linear Stage and Driver

Newport Corp. (Irvine, CA) offers the CONEX-AGP controller preconfigured with an Agilis™ AG-LS25-27P linear stage that includes a miniature, built-in, direct-read linear encoder. The stage combines a piezo motor...

Products: Robotics, Automation & Control
Linear Stepper Motors

Johnson Electric (Vandalia, OH) has introduced the Saia® ULE Series linear stepper motors. Available in unipolar or bipolar configurations, the motors provide constant positioning force to 400 N over full travel...

Products: Robotics, Automation & Control
Encoders

Oriental Motor (Torrance, CA) offers encoder options for 0.36º and 0.72º stepping motors. The stepping motors are available as a stepping motor only, or as a stepping motor and driver package. The new stepping motor encoder...

The European Space Agency is funding e2v’s development of an image sensor for the visible instrument in the Euclid space telescope. Euclid is a candidate mission for one of two...

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