VCS-10 Voice Coil Stage

vcs10finalThe VCS-10 Voice Coil Linear Stage is a high performance compact positioning actuator. It was specifically developed for applications requiring both high precision and high-speed positioning over a short to medium stroke. This product mates the voice coil motor to a very smooth cross-roller bearing stage and a very high resolution position feedback encoder.  The VCS-10 is well suited for optical focusing and other micro-positioning applications in markets such as semiconductor, medical, optical testing, scanning microscopy, circuit board assembly and micro manufacturing.  The VCS-10 Voice Coil Stage has 10mm of available stroke and can optionally be configured with a 10 millimeter clear aperture through its center, which is then designated a VCS-1010. Other configurations and options are available.  The VCS10 comes stock with a moving carriage that contains many threaded holes for mounting.  A special replacement carriage is available with a 6mm diameter lens socket and adjustability  in the two cross axes.

Voice Coil Motor: The motor used in the VCS-10 Voice Coil stage is a custom designed moving coil motor optimized using advanced computer modeling.  The magnets used in Equipment Solutions motors have some of the highest magnetic flux densities available.  Its coil characteristics, including resistance and inductance, were closely designed to match the capabilities of the SCA814 Servo Controlled Amplifier.  The motor can drive the stage to unparalleled accelerations and peak velocities.

Stage Guidance: The VCS-10 Voice Coil Stage makes use of a crossed-roller bearing to smoothly guide the motor coil and any additional load, up to 1 kg, across its 10 millimeters of travel. Bearing stages like the VCS-10 provide moderate to high levels of performance at a somewhat lower price point than stages using our flexure guidance technology. Bearings like those used in the VCS-10 are subject to potential accelerated failure rates when motions include very high accelerations and/or very small repetitive motions. If this is a concern, then a stage using a flexure guidance system should be considered. A more complete discussion and comparison of flexures and bearings is presented in the Linear Stages Highlights section of this web site.

Position Feedback: In its standard configuration the VCS-10 uses a non-contact optical analog position encoder that makes it directly compatible with the SCA814 Servo Controlled Amplifier.  The 50 nanometer positioning repeatability described in the specifications section assumes this sensor technology. The analog nature of the position sensor promotes the exceptionally high positioning resolution and bandwidth.  For compatibility with digital servo systems, the VCS-10 can be optionally configured with a 1 micron digital quadrature encoder.

 

 

Specifications

Clear aperture (option)
10 mm
Range of Motion 10 mm
Positioning Resolution <50 nm (analog)1mm (digital)
Peak Force 3 lbs (for 10 sec.) 
Max Continuous Force 1.5 lbs  (6.6N)
Motor Constant 1 lbs/Amp (4.4 N/A)
Coil Resistance 4 ohms
Coil Inductance 300 uH
Travel Non-Straightness <0.5 um   (Crossed roller bearings)
Flexure Parasitic Rotation 0.1 degrees  per mm travel
Dimension
77 X 40 X 38
Total Mass 250 g
Moving Mass 25 g

 Configuration and Options


  Configs

Clear Aperture

Encoder Type

Cable length
VCS10A
None  Analog  14”
VCS1010A
10 mm  Analog 14”
 VCS1010D  none  Digital 53”
VCS10D  10 mm  Digital 53”

Downloads And Data Charts

pdfVCS-1010 Voice Coil Stage Brochure Provides a brief presentation of the products features and specifications.

pdfVoice Coil Stage Interfacing and User Manual Describes the products electrical interfaces.

zipVCS-1010 Voice Coil Stage Interface Drawings Presents the mechanical details necessary for successful integration of the product.

zipVCS-1010 Voice Coil Stage Motor Force Constant 

zipVCS-1010 Voice Coil Stage Tip/Tilt