Motion Control

Motion Control

Browse innovative developments in motion control technologies. Find essential news, technical briefs, and applications used in PID controllers, servo motors, direct drive solutions, autonomous positioning, and motion-related components.

Products : Motion Control
Rail Brakes

The RB Series of linear profile guide rail brakes from Nexen Group (Vadnais Heights, MN) use spring force to secure the load in holding applications. Each brake clamps directly onto the center of the guide rail for positive braking and holding in all axes. The brakes eliminate drive train backlash and elasticity, and are...

Products : Motion Control
Tie Rod Cylinder

The CA2 metric tie rod cylinder series from SMC Corp. of America (Indianapolis, IN) features aluminum die-cast covers to reduce weight. Cushioning capabilities were improved by increasing the volume of the cushion chamber and by using a floating cushion seal. The seal reduces movements of the piston rod at lower operating...

Products : Motion Control
Brushless Vibration Motors

Nidoc Copal USA Corp. (Torrance, CA) offers the LVB10 line of brushless vibration motors measuring 10 mm outside diameter and 3.4 mm axial length. The LBV10-003 model reaches speeds of 13,500 rpm and draws a rated current of 76 milliamps, while the LBV10-008 model reaches 12,000 rpm at 62 milliamps. The developed...

Products : Motion Control
Voice Coil Actuator

Gee Plus (Elgin, SC) has announced the VM2436 voice coil actuator that provides bi-directional linearity over a maximum linear stroke of 0.59". It develops a peak force of almost 11 ounces in a package size of 0.94" outside diameter by 1.49" long. The actuator is constructed using a Teflon-impregnated coating on the core of...

Products : Motion Control
Servo Motor

Nanomotion (Ronkonkoma, NY) offers the MM industrial servo motor that provides unlimited rotary or linear motion with 0.17 N of driving force and velocity to 235 mm/sec. The motor measures 9 × 17 × 5 mm and weighs 5 grams. It works with the company’s standard amplifiers and any servo control, and can be integrated into most...

Products : Motion Control
Direct Drive Actuator

Copley Controls (Canton, MA) offers the ServoTube actuator with twin outrigger bearings designed for applications subject to high side loading. A ball-bushing option with steel bearing rails provides maximum side-loading support. Optional polymer bushings, which use aluminum rails, are suitable for vertical loads. The new...

Products : Motion Control
Motor Driver

Allegro MicroSystems (Worcester, MA) has announced the A1441 full-bridge motor driver designed to drive single-phase, low-voltage, bipolar brushless DC motors. Commutation of the motor is achieved by the use of one Hall element to detect the position of an alternating pole ring magnet. The IC semiconductor process enables the...

Products : Motion Control
Vibration Analyzer

Datastick Systems (Campbell, CA) offers the VSA-1212 vibration spectrum analyzer, a PDA-based vibration analyzer that uses off-the-shelf ICP®-type piezoelectric accelerometers for machine condition monitoring and maintenance. The system includes the Datastick® analyzer module that attaches to PDAs running Palm OS, the...

Products : Motion Control
Brushless DC Motors

Pittman® Brushless DC servomotors from PennEngineering® Motion Technologies (Harleysville, PA) feature a slotless stator design for applications in data storage, medical, semiconductor, and automation. Features include low inductance and high current bandwidth for control during rapid acceleration in incremental motion...

Products : Motion Control
Electro-Mechanical Actuator

Exlar Corp. (Chanhassen, MN) has introduced the Exlar I Series electro-mechanical actuator with roller screw technology. Users have a choice of motor brand and type, including brushless servo, stepper, DC, or AC motor. Input transmission options include direct coupling, parallel belt and pulley drive, and in-line...

Briefs : Motion Control
Precision Stages Enable Analytical Measurement of Jet-Able Fluids

Precision X-Y stages were developed for integration into a new analytical measurement tool for use in the development of digital inks or other fluids to be jetted from ink jet print heads. The Drop Watcher III system provides repeatable and exact measurements of drop formation...

Briefs : Software
Computer Simulation Ensures Motorcycle Stability

In the area of maintaining conventional motorcycle stability, engineers have established a series of tests that measure the wobble, weave, and kickback of every new model before it is released for production. While physical testing provides a nearly perfect measurement of a prototype or production...

Briefs : Motion Control
Direct Steering Component for Recumbent Tricycles

When developing the steering component of the Catrike Speed recumbent tricycle, the manufacturer switched from metal bearings to igubal® plastic rod ends for lighter weight (80% less) and better dampening; they absorb more vibration from wheel to arms. This also enabled the...

Briefs : Motion Control
Compact Motors Provide Motion Control for Explosive Ordnance Disposal Robot

A remote-controlled, compact Explosive Ordnance Disposal Robot (EOD) has been deployed in Iraq, Afghanistan, and other worldwide locations to secure and transport hazardous, dangerous, or suspicious materials to a safe location where it can be disarmed or destroyed. The...

Briefs : Motion Control
Improving Control of Two Motor Controllers

A computer program controls motors that drive translation stages in a metrology system that consists of a pair of two-axis cathetometers. This program is specific to Compumotor Gemini (or equivalent) motors and the Compumotor 6K-series (or equivalent) motor controller. Relative to the software supplied...

Briefs : Motion Control
Two-Armed, Mobile, Sensate Research Robot

The Anthropomorphic Robotic Testbed (ART) is an experimental prototype of a partly anthropomorphic, humanoid- size, mobile robot. The basic ART design concept provides for a combination of two-armed coordination, tactility, stereoscopic vision, mobility with navigation and avoidance of obstacles, and...

Briefs : Motion Control
Compact, Automated Centrifugal Slide-Staining System
Compact, Automated Centrifugal Slide-Staining System

The Directional Acceleration Vector-Driven Displacement of Fluids (DAVDDOF) system, under development at the time of reporting the information for this article, would be a relatively...

Compact, Automated Centrifugal Slide-Staining System
Briefs : Motion Control
Arc-Second Pointer for Balloon-Borne Astronomical Instrument
Arc-Second Pointer for Balloon-Borne Astronomical Instrument

A control system has been designed to keep a balloon-borne scientific instrument pointed toward a celestial object within an angular error of the order of an arc second. The design...

Arc-Second Pointer for Balloon-Borne Astronomical Instrument
Briefs : Motion Control
Exhaust Nozzle for a Multitube Detonative Combustion Engine
Exhaust Nozzle for a Multitube Detonative Combustion Engine

An improved type of exhaust nozzle has been invented to help optimize the performances of multitube detonative combustion engines. The invention is applicable to both air-breathing...

Exhaust Nozzle for a Multitube Detonative Combustion Engine
Briefs : Motion Control
Position Sensor Integral With a Linear Actuator
Position Sensor Integral With a Linear Actuator

A noncontact position sensor has been designed for use with a specific two-dimensional linear electromagnetic actuator. To minimize the bulk and weight added by the sensor, the sensor has been...

Position Sensor Integral With a Linear Actuator
Briefs : Motion Control
Improved Electromagnetic Brake
Improved Electromagnetic Brake

A proposed design for an electromagnetic brake would increase the reliability while reducing the number of parts and the weight, relative to a prior commercially available electromagnetic brake. The reductions...

Improved Electromagnetic Brake
Briefs : Motion Control
Active Suppression of Instabilities in Engine Combustors
Active Suppression of Instabilities in Engine Combustors

A method of feedback control has been proposed as a means of suppressing thermo-acoustic instabilities in a liquid- fueled combustor of a type used in an aircraft engine. The basic...

Active Suppression of Instabilities in Engine Combustors
Briefs : Motion Control
Magnetocaloric Pumping of Liquid Oxygen

As noted in the previous article, the field-induced force density on a magnetic fluid is proportional to the magnetic susceptibility times the gradient of the magnetic field squared. The direction of the force is towards increasing magnetic field (positive gradient). Applying a magnetic field to a magnetic...

Briefs : Motion Control
Pumping Liquid Oxygen by Use of Pulsed Magnetic Fields

An effort is underway to develop a method of pumping small amounts of liquid oxygen by use of pulsed magnetic fields. This development is motivated by a desire to reduce corrosion and hazards of explosion and combustion by eliminating all moving pump parts in contact with the pumped...

Briefs : Motion Control
A Software Architecture for Semiautonomous Robot Control

A software architecture has been developed to increase the safety and effectiveness with which tasks are performed by robots that are capable of functioning autonomously but sometimes are operated under control by humans. The control system of such a robot designed according to a prior...

Briefs : Motion Control
Compact Plasma Accelerator

A plasma accelerator has been conceived for both material-processing and spacecraft-propulsion applications. This accelerator generates and accelerates ions within a very small volume. Because of its compactness, this accelerator could be nearly ideal for primary or station-keeping propulsion for spacecraft having...

Briefs : Motion Control
Improved Electrohydraulic Linear Actuators

A product line of improved electrohydraulic linear actuators has been developed. These actuators are designed especially for use in actuating valves in rocket-engine test facilities. They are also adaptable to many industrial uses, such as steam turbines, process control valves, dampers, motion control,...

Briefs : Motion Control
Brushless DC Rotary Motor Improves Efficiencyin Fuel Cell Applications

The designers and manufacturers of fuel cells are continually striving to improve the efficiency of their products. A design challenge facing the engineer relates to reducing the power demands of the many electrical systems that support fuel cell operation. Blowers,...

Briefs : Motion Control
Improved Multiple-DOF SAW Piezoelectric Motors

Surface-acoustic-wave (SAW) piezoelectric motors of a proposed type would be capable of operating in multiple degrees of freedom (DOFs) simultaneously and would be amenable to integration into diverse structures and mechanisms. These motors would be compact and structurally simple and would not...

Briefs : Motion Control
System for Centering a Turbofan in a Nacelle During Tests

A feedback position-control system has been developed for maintaining the concentricity of a turbofan with respect to a nacelle during acoustic and flow tests in a wind tunnel. The system is needed for the following reasons: