dome drive electric upgrade system observatory automation project
DESCRIPTION
Dome Drive Electric upgrade System Observatory Automation Project. Steven Bauman Operations M.E. Manager. Dec 13, 2010. Justification. The Observatory Automation project required the Dome Drive System to be remotely operated and provide monitoring capabilities Conduct a Feasibility study - PowerPoint PPT PresentationTRANSCRIPT
Dome Drive Electric upgrade System
Observatory Automation Project
Steven BaumanOperations M.E. Manager
DEC 13, 2010
Justification The Observatory Automation project required the
Dome Drive System to be remotely operated and provide monitoring capabilities
Conduct a Feasibility study
Things to consider
Options
Retrofit the current hydraulic system
Upgrade the current hydraulic system
Upgrade to an electronically controlled motor drive system
Conceptual Design reviews
Assessment of the choices equally apples to apples comparison
Evaluate and Distinguish best choice
Upgrade to electronically controlled motor drive system
Upgrade the current hydraulic system
Current hydraulic system
Electric dome drive plan
Design solution to replace the hydraulic power unit and hydraulic
motors and operate the dome drive system with electronically
controlled motor units.
Specifications and
Requirements formed
Calculations and data gathering
Detailed design changes,
anticipated costs, design reviews
Beneficial Features and Improvements Increased speed
capability from 60deg/min to 72deg/min
Increased system efficiency Hydraulic system η~30% Electric system η~92%
Reduced electrical consumption
Reduced Environmental footprint
Reduction of leak hazardous
Reduced mechanical maintenance Will save 5-10k a year,
amount currently spent on hydraulic system.
Nominal cost difference between options
Reliability Can operate with one
drive out of service
Designing for the future
Design solution actuator
Hydraulic actuator
replacement
with Pneumatic actuator
Solenoid valve
• Uses building air, 100-110psi, solenoid valve draws only 2 watts of power.
Design Solution motor Drive unit
Replace Hydraulic power unit
with
Electric motor drive controller
Replace Manual control station
Hand Held Pendent
Dome Gear train Components
Brevini Gear reduction
box
SHP Main shaft
assembly
SHP wheel assembly
Hydroland Hydraulic
motor
Re-use
Re-useRe-use
Replace
Baldor RPM AC 20HP motor
1750RPM3PH60HZ
Design solution Gear trainElectric motor
Adapter kit
New configuration
BreviniNema250TC Motor adapte
r flange
Rotate assembly up to achieve more clearance.