Motion Control

Motion Tracking System

InvenSense (Sunnyvale, CA) has introduced the MPU-9250 9-axis motion sensing device housed in 3 × 3 × 1 mm QFN package. The full integrated device includes a gyroscope, accelerometer, and electronic compass, with an onboard Digital Motion Processor. The accelerometer consumes 6.4 mA of current in low-power mode. The compass has a resolution of 16 bits, and full-scale measurement range of ±4800 μT. It is supported by the company’s MotionApps software. The software drivers are fully compliant with Google’s Android 4.2.1 Jelly Bean, Microsoft Windows 8, and Windows RT releases, and support low-power DMP capabilities that offload the host processor to reduce power consumption and simplify application development.

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Miniature Slide Guides

NB SEBS-B type slide guides from NB Corporation (Hanover Park, IL) feature standard clearance. The SGLS all-stainless models are suitable for high-temperature applications, cleanroom, and vacuum environments. They are available in both retained-ball (whose elements allow for easier handling since the guide block may be removed from rail without ball loss) or low-cost nonretained- ball lines. Sizes range from 2 mm, and friction-free travels range from 104-mm to 1000-mm rail lengths.

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Drives

Lenze Americas (Uxbridge, MA) offers an Ethernet/IP communication module as an option on its 8400 StateLine, HighLine, and TopLine control cabinet devices, in addition to the Lenze 8400 motec and protec decentralized frequency inverters. Featuring dual-port technology and an external 24V back-up supply, the Fieldbus interface allows communication via Ethernet/IP enabled control systems. The 8400 series features L-Force automation technology for motion control solutions. Decentralized 8400 protec and motec inverter drives offer solutions for motion control at the source. The 8400 StateLine, HighLine, and TopLine inverters for control cabinet installation feature IP20 and IP31 protection.

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Magnetic Gyro

Kionix (Ithaca, NY) offers the KMX61G accelerometer-magnetometer sensor and sensor fusion software that delivers gyro emulation using 550 μA of power. The six-axis device can provide nine-axis accelerometer, magnetometer, and gyro outputs. The system features 512-byte FIFO buffer with watermarking, embedded temperature sensor, and low-power, embedded motion wakeup function. The system offers a user-programmable, full-scale accelerometer range; user-selectable ODR from 0.781 Hz to 1.6 kHz, magnetometer algorithms for auto-calibration and MI rejection, and supply voltages between 1.8 and 3.3V.

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Mini Cylinder

Intelligent Actuator – IAI America (Torrance, CA) offers the RCD Mini Cylinder that is designed to replace compact air cylinders used for short-stroke travel, pressing, and hoisting. It features a crosssection of 12 mm, with a body length as short as 60 mm. The cylinder incorporates a brushless DC motor, and provides maximum acceleration/ deceleration of 1G and maximum speed of 300 mm/s. It achieves 3-point positioning and push-motion operation is possible. Setting the appropriate acceleration/ deceleration rate enables the cylinder to push out a workpiece without impact. The capability for position adjustment based on a numeric value enables the cylinder to achieve precise film tension adjustment. The cylinder can be used to position a workpiece by pushing it from both sides.

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Linear Actuators

K90 linear actuators from Exlar (Chanhassen, MN) are compact, 90-mm frame size actuators available in three performance levels, and allow the use of third-party motors. Featuring dimensions and form-factor consistent with ISO Metric pneumatic cylinder specifications, the actuators are designed to provide a universal solution for linear motion rod-style actuator applications. Three models offer two grades of roller screws and one Acme screw. KX90 actuators incorporate a high-performance planetary roller screw for applications in industrial automation, mobile equipment, process control, and other applications requiring millions of inches of travel under load.

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Pneumatic Air Cylinders

NITRA™ E-Series pneumatic dual-rod guided air cylinders from Automation - Direct (Cumming, GA) are designed for applications that require precise alignment or have large side loads. The devices are interchangeable with other popular brands of cylinders. The double-acting cylinders are constructed with extruded aluminum housing and switch mounting tracks, dual chromeplated stainless steel guide rods, and bronze bushings. The cylinders feature a maximum operating pressure of 142 psi, and are available in eight bore sizes from 12 to 63 mm. Available stroke lengths range from 10 to 250 mm, depending on bore size.

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Position Sensors

ASM Sensors (Elmhurst, IL) offers the PMIS4/PMIR5 non-contact measuring system developed for rotary applications. The system provides high EMC protection, large guiding distance tolerance, and signal performance up to 327,680 pulses/360°. The incremental system consists of a PMIS4 sensor head and a PMIR5 incremental magnetic ring. The sensor head is made of a fully enclosed, shielded metal housing, offering protection against electromagnetic interference and thermal overload. Guiding distance is ±1 mm. Available output types are HTL, TTL, and TTL24V.

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Motion Controllers

ADLINK Technology (San Jose, CA) has released the PCI- 8254/PCI-8258 motion controllers that provide servo updates up to 20 KHz through hardware-based PID-FF control loop and secondorder filters, time-deterministic trajectory and velocity planning, comprehensive application functions, and diagnostic and control utilities. The program download function can execute up to eight individual tasks simultaneously, providing control performance in real time, and conserving CPU resources. The controllers also provide multidimensional interpolation, as in 3D linear/circular/spiral interpolation, for contouring applications in manufacturing industries such as laser engraving/cutting, glue dispensing, and others.

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Linear Stages

Newport Corp. (Irvine, CA), has introduced the FMSxxHA high-accuracy FMS stages for surface metrology applications. The stages are available in 100-, 200-, and 300-mm models. With all-steel construction, the stages combine high stiffness and thermal stability. The crossed roller bearings have an anti-creep feature to provide smooth and straight motion. The steel ball screw is designed for highspeed motion. The stages are driven by a stepper motor, with a linear encoder that provides on-axis accuracy down to 1μm and submicron bidirectional repeatability.

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