Motion Control

Reducing Design Time for Linear Motion Systems

Design time can be reduced while ensuring durability and high performance. Reducing design time is critical in engineering because the result is lower costs and faster time to market. Design time often includes a number of non-value-added activities such as re-design, over-design, or scope creep that can be minimized by thoroughly understanding all of the application criteria and verifying calculations and analysis via parametric testing of components, modules, and full assemblies with data acquisition equipment, and proving out projected performance results with testing.

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Robots Play Role in Future Aircraft Wing Production

KUKA Systems (Sterling Heights, MI), in conjunction with Bombardier Aerospace, has devised an innovative robotic cell for laying up dry carbon fiber material as a result of a national research and development project.

Posted in: Applications, Application Briefs

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Wireless Foot Switch Design Considerations

Key selection factors for OEMs to consider include wireless protocol selection, battery selection, operating-voltage and space constraints, and wireless receiver location. Wireless foot switches for the control of medical devices are gaining acceptance and growing in popularity — prompting OEMs to design medical equipment for use with a wireless foot switch or to accept a wireless foot switch as a pre-sale or post-sale option.

Posted in: Bio-Medical, Briefs, Briefs

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Electronic Flow Control Valve (EFCV) with Pressure Compensation Capability

Flow control is one of the most critical functions in the hydraulic industry. Traditionally, flow control is implemented via a proportional or servo valve. When current is applied into the coil of a solenoid (proportional valve) or a torque motor (servo valve), a corresponding electromagnetic force is generated. These forces could either directly stroke the spool (single-stage configuration) or indirectly move the main stage spool via regulating the hydraulic pressures on each end of the main stage spool (multiple-stage configuration).

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DC Motor Automates Patient Transfer Device

One of the growing problems facing nurses is a reduced staff, and with it the need to care for overweight patients with very little help. This effort has led to musculoskeletal disorders (MSDs) including back injuries. In fact, 12 percent of nurses leave the profession each year due to back injuries. Those working in nursing homes have an even higher rate of injuries. Until recently, moving a patient was performed manually or with minimal automation.

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Steer-by-Wire Systems with Integrated Torque Feedback Improve Steering Performance and Reduce Cost

Hydraulic steering systems have long dominated the industrial utility vehicle market because of their familiarity both to vehicle designers and operators. More recently, a trend has been seen towards the use of electronic steer-by-wire systems that provide greater design flexibility by enabling software to customize the connection between the steering wheel and steering mechanism. Several suppliers offer integrated steer-by-wire systems targeting the industrial utility vehicle market. A key differentiating factor is the method used to provide torque feedback to give the operator a heightened sense of vehicle control. The latest generation of integrated steer-by-wire systems consumes less power, is less expensive, and offers the ability to be programmed to provide a wide range of value-added features.

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Motion Control Requirements for Medical Instruments

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. Even in this segment, motion control ranges from precision liquid handling and dispensing, to sample- handling robotics and automated sample storage and retrieval systems. We’ll delve into precision liquid handling and dispensing and related functions, and the interaction between the mechanical system and the motion control system. High-pole-count permanent magnet AC servo motors can simplify system design and improve system performance and reliability when mated with control systems capable of bringing out their full potential.

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