Motion and control functions are fully integrated into the M3-L module, including a piezoelectric linear micro motor, position sensor, guide mechanism, motor driver, control processor and software. The module runs on 3.3V input for battery-powered operation and draws approximately 500 mW of power while moving and 200 mW quiescent. It weighs approximately 4.5 grams. The standard serial interface (I2C or SPI) accepts PID closed-loop system tuning parameters, as well as high-level input commands such as ”move specified distance.”

The M3-L module is offered with a bullet nose for pushing or a hook tip for pulling loads. Typical travel range is 6 mm. New Scale also develops custom OEM modules including bi-directional (push/pull) systems, modules with custom travel range up to 20 mm, and multi-axis configurations.

The module is ideal for precision motion control of variable inductors, trimming capacitors and optical elements for RF, microwave and photonics tuning applications. It also adds reliable motion to a wide range of miniature optical and hand-held instruments; aerospace and UAV controls; and biomedical systems including fluid controls and microsurgery.

Find out more by emailing sales@newscaletech.com or visiting www.newscaletech.com.

www.newscaletech.com

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The new C-867, which is optimized for piezo linear motors, features integrated drive electronics for ultrasonic motors; dynamic servo parameter switching for faster settling; 4+4 programmable transistor-transistor logic inputs/outputs; RS-232, USB and joystick interfaces; daisy-chain networking for up to 16 axes; a data recorder and macro programming language; and extensive software support, including dynamic link library and LabView.

A compact case comprises components for controlling/communication and drive electronics for the piezo ceramic motors. The PIMikroMove user software features the PITuningTool for optimizing system performance.

This motor controller is made for closed-loop micropositioning systems integrated with piezo linear motor drives. The controller can be operated from an RS-232 interface or a host PC via a USB port. Stand-along operation can be done by joystick or through preprogrammed macro commands.

Maximum output voltage per channel is 200V, while maximum output power per channel is 15W. Operating temperature ranges between 5°C and 40°C, while operating voltage is 24VDC from an included external power supply.

The self-locking and nonmagnetic ultrasonic ceramic motors provide better positional stability compared to conventional magnetic linear motors or motor/leadscrew drives, according to Physik.

The all-new C-867 can be used in applications such as microscopy, biotechnology, automation, fiber positioning, quality assurance testing, photonics/integrated optics and testing equipment.

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The piezoceramic clamping and shear elements act directly on a moving runner coupled to the load. For maximum velocity, and long distance movements, the runner can be driven in full step mode. Extremely uniform motion and constant velocity is achieved with the nanostepping mode.

The N-216 linear motors come in two versions for open- or closed-loop operation, as well as in two different load configurations. Closed-loop versions are equipped with a linear encoder for direct position measurement of the moving runner. The encoder features 5nm resolution over the full travel range.

Applications include high-end ultra-precision manufacturing and semiconductor test equipment to astronomy and high energy physics applications. Extreme reliability makes them ideal for applications in difficult-to-access internals of instruments, requiring nanometer-realm adjustment and/or vibration cancellation.

For datasheets or more information, email info@pi-usa.us or visit www.pi-usa.us.

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The paper describes basic techniques and explains different piezoelectric motion principles such as flexure mechanisms and ultrasonic motors.

In order to increase the resolution of common imaging detectors such as CCDs or CMOS either the chip size can be increased or the pixel size reduced; both solutions have undesirable side-effects. The first case requires a larger recording device and different imaging optics. In the second case, light sensitivity decreases with the pixel size, also reducing the signal/noise ratio.

With so-called pixel sub-stepping, the recording area is moved on predefined paths with a defined frequency.  This “dithering”, where the travel is less than the size of a pixel, causes the pixel to be exposed several times on the recording area, producing a virtual “pixel multiplier” which can significantly improve the resolution without negative side-effects.

Today, small and cost efficient piezo devices (in-plane scanners or tip/tilt mechanisms)  are available to handle the task.  In addition to image resolution enhancement, these devices are also fast enough to remove jitter induced by vibration from images and video.

Download the paper at http://www.pi-usa.us/pdf/
Paper_Imaging_Resolution_Enhancement_With_Piezo_Mechanisms.pdf

www.pi-usa.us

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This true linear motor system has no conversion of rotation, eliminating rotary conversion losses, and consists of only 4 parts and can replace classical drive elements like miniaturized motor/lead screw systems or other linear motors with speeds of up to 200mm/sec (8in./sec) and an auto-locking feature. Integration of the P-653 is simple because the moving slider and the piezomotor are delivered assembled as a unit on a PCB driver board running on 5VDC.

P-653-series PILine® ultrasonic motors are ideal for OEM applications where quantities are high and space is at a premium. The systems are optimized for moving small objects such as optical fibers, micro-optics, or micro-electromechanical elements fast and precisely. These non-magnetic ceramic motors can also be used in medical applications.

Motion is controlled by TTL voltage pulses applied to the driver electronics. The self-adjusting driver creates the high-frequency, nanometer level oscillations (~500kHz) that make the ultrasonic ceramic motor move. PILine^® linear piezomotors are based on a patented ultrasonic drive. At the heart of the system is a rectangular monolithic piezoceramic plate (the stator), segmented on one side by two electrodes. Depending on the desired direction of motion, the left or right electrode of the piezoceramic plate is excited to produce high-frequency eigenmode oscillations of hundreds of kilohertz. PILine® motors are vacuum compatible, non-magnetic and self-locking.

A developer’s kit can now be ordered from PI-USA’s Piezo Basics Online Store at http://store.pi-usa.us/ProductDetails.asp?ProductCode=P-653.01D

www.pi.ws

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PI’s (Physik Instrumente) 2009 hardcover catalog “Piezo Nano Positioning Inspirations 2009″ covers nanopositioning and piezo technology. The 530-page publication is a comprehensive reference book on the fundamentals of nanopositioning, piezo systems and micropositioning technology. The catalog contains over 200 product families, 30% of which are new, with more than 1,000 drawings, graphs, images and technical diagrams.

Products and technologies covered include:

• Parallel-kinematics nanopositioning / scanning stages
• High-speed ultrasonic linear motors for automation
• Ceramic-encapsulated piezo actuators
• PiezoWalk® piezo worm type linear motors for Bio/Nanotechnology
• 6-Axis Hexapod micromotion robots
• High-load, low-speed mirror alignment systems for astronomical telescopes
• Motorized precision actuators and stages for semiconductor applications
• Digital & Analog nanopositioning motion controllers & piezo drivers
• Servo & stepper motor controllers
• Photonics alignment systems, photometers

In addition to product descriptions and selection guides, extensive tutorials on piezo technology, the fundamentals of nanopositioning, micropositioning and nanometrology are included to aid users in selecting the system that best meets their needs.

A PDF catalog version can also be downloaded from PI’s website at http://www.pi.ws/2009cat

For more information or to download individual catalog sections, visit:

http://www.physikinstrumente.com/en/news/fullnews.php?newsid=149

Motion Control Tips

The whitepaper, available at http://www.pcbmotor.com, describes how, using standardized components and well established assembly techniques, you can use increase your profit margin:

• Reduce application size by integrating motor and all electronics into one printed circuit board.
• Reduce bill of materials – PCBMotor’s direct drive eliminates gears.
• Further eliminate cost by getting rid of screws, wires, connectors and manual assembly.
• Actuator components for the PCBMotor are SMD-mounted directly on the PCB.
• Increase your design options with the unique hollow and ultra slim form factor of the PCBMotor.

Technically speaking, the PCBmotor consists of two parts: (1) The stator, milled out of the PCB itself, holds the piezos/actuators and electrical connecting circuit (the PCB can also hold the driver) and (2) The rotor, pressed onto the surface of the stator, delivers the mechanical output. A travelling wave is generated over the stator surface, acting as a flexible ring to produce elliptical motion on the rotor interface. The elliptical motion of the contact surface propels the rotor and the connected drive-shaft.

1x1mm piezo ceramic components are mounted on PCB. Operation depends on friction between the moving rotor and stator as well as amplitude and quality of the wave travelling on the stator. The rotor can turn between 60 and 120 RPM with torque ranging from 1 Nmm to more than 70 Nmm depending on the stator’s diameter, number of piezo components and the rotor design and material.

www.pcbmotor.com

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