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Project Details
This project has four specific goals: to utilize the existing and affordable
industrial-control components commercially available as a result of advances in
microprocessor control and power electronics; to integrate this technology
safely and seamlessly with the systems and methods currently used by theater
practitioners; to develop highly flexible control structures that promote a wide
range of artistic experimentation; and to capitalize on the collaborative
resources of both the academic and professional theater communities.
The core of the components that comprise the system to be installed for this
project is a software-based Human Machine Interface developed using the National
Instruments--LabVIEW development environment for industrial automation. This
interface, running on a standard PC, allows an operator control of the position
and speed for four to sixteen linked or independent motion axes of motorized
scenery or similar stage effects. The operator can record, edit, and playback
motion cues much as with standard stage lighting consoles. The on screen display
offers graphical input and feedback of the control variables. The
electro-mechanical components of the effect interface through an industry
standard voltage control signal generated by one or more hardware-based control
cards that typically reside in the PC itself. Stage effects can be driven by a
variety of electro-mechanical, hydraulic or pneumatic devices and this standard
control signal can be used with most. Since electric motors are typically used,
however, the project also specifies the interface electronics and position
control sensors appropriate to those devices. This computer system will not
require the acquisition of any specific mechanical equipment to be used on stage
but, rather, allows for integration with all existing inventory as well as
compatibility with all foreseeable future purchases.
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