Special Coverage

Lightweight Internal Device to Measure Tension in Hollow- Braided Cordage
System, Apparatus, and Method for Pedal Control
Dust Tolerant Connectors
Foldable and Deployable Power Collection System
Iodine-Compatible Hall Effect Thruster
Development of a Novel Electrospinning System with Automated Positioning and Control Software
2016 Create The Future Design Contest Open For Entries
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Servo Control System

The MESA 7I77 card set from Mesa Electronics (Richmond, CA) is a FPGA-based, 6-axis analog control system for CNC, industrial automation retrofits, and OEM systems. Six axes of analog outputs and encoder inputs are sufficient for up to 5-axis machines plus spindle control. Encoder inputs are individually programmable for TTL or differential mode. The PCI or PCIE host interface provides real-time access to the motion hardware. In addition to the motion-related I/O, 32 digital inputs and 16 digital outputs are provided. These digital I/O points are isolated from the system ground and can use 5V to 32V I/O voltage.

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Diaphragm Pump

The 118Z Series pressure/vacuum oil-less diaphragm pump from Thomas Division (Sheboygan, WI) provides a low-vibration design that utilizes a lightweight nylon housing and end cap that limit the pump’s weight to 4.4 pounds. It features a 24V brushless DC motor.

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Slotless Frameless Motors

Applimotion (Loomis, CA) has introduced new models of the UTS slotless frameless direct drive motors in sizes from 12 mm to 300 mm diameter. The motors feature zero cogging and sinusoidal torque curves. With large through holes and thin radial cross-section, the frameless kits integrate into gimbal, rotary stage, or automation platforms. The motors offer smooth electromagnetic rotation when integrated with a servo control system with high-resolution encoder and sinusoidal current control amplifier.

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Electromagnetic Machine Software

SPEED 2012 software from CDadapco (Melville, NY) consists of five machine programs: PC-BDC (Brushless PM Motors), PC-IMD (Induction Motors), PCDCM (DC Brush Motors), PC-WFC (DC and AC Wound Field Motors), and PC-SRD (Switched Reluctance Motors). Each program is intended for designing and calculating a range of electromagnetic machine performances. A number of templates are used to establish the machine’s dimensions, assist in laying out the winding, select the desired materials, and compute the machine’s performance at a single operating point, or over an entire speed/torque range. A link to the software’s FEA program PC-FEA offers analysis of fine details.

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Variable Speed Drive

The Drives & Motion Division of Yaskawa America (Waukegan, IL) has released the P1000 variable speed drive that provides control for variable-torque loads through 500. Configuration tools include a multi-language LCD display with a real-time clock, parameter storage, fan and pump application presets, and a portable USB copy unit. DriveWizard® computer software delivers configuration, monitoring, and trending functions enhanced by direct connectivity through the drive’s USB port. The drive offers three expansion ports for additional I/O, feedback, and network communications, including DeviceNet, EtherNet/IP, Modbus TCP/IP, Profibus-DP, PROFINET, BACnet, and Lonworks.

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Synchronous Motors

Bauer Gear Motor, an Altra Industrial Motion Company (South Beloit, IL), offers a range of permanent magnet synchronous motors (PMSM). The motors employ a rotor design that integrates embedded permanent magnets made from the rareearth material, instead of the squirrel-cage rotor found in induction motors. The motors offer high efficiency under rated operating conditions and high power density. They are available in ventilated and nonventilated configurations across the power range from 0.55kW to 15kW. They operate on 380V to 500V power supplies, and are rated for inverter duty. Applications include fans, pumps, and compressors; and constant torque applications such as elevators and conveyors.

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Rotary Stages

Aerotech (Pittsburgh, PA) offers the MPS-GR series rotary stages available in two sizes: the MPS50GR and MPS75GR. They incorporate wormgear drive and bearing components for repeatable positioning, and are available with DC servo or stepper motors and either a 20-mm (MPS50GR) or 30-mm (MPS75GR) clear aperture. The clear aperture allows the stages to address applications requiring a through-hole or accommodations to mount an optic, including articulation of beam polarizing lenses, through-holes for cabling or air lines, or vision/camera/inspection applications. The DC servomotors for the stages are equipped with a square-wave rotary encoder, and the MPS75GR includes a manual adjustment knob.

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