RELIABILITY FEATURES

• All Parts SEL Immune

• 100% Dual Redundant

• The GCE contains primary and redundant incremental encoder interface circuits

• The GCE contains two primary and two redundant 3 phase motor  drive outputs.

• >15 kRad Standard (100 kRad Option)

• Conduction Cooled Design

• All Parts MIL-883B

OPTIONS

• Single String Version

• RS-422. RD-485. or LVDS interface

• Custom Command & Telemetry ICD

• >2 Motor Versions

• Custom Form Factor

The Moog Broad Reach Gimbal Control Electronics (GCE) system controls and

drives two types of dual axis redundant actuators. The system contains two

primary and two redundant motor drive outputs. These motor drive outputs

control and drive small, three phase Wye, six state, and permanent-magnet

actuators. The GCE contains two primary and redundant incremental encoder

interface circuits. The GCE communicates with the spacecraft via a dual redundant

MIL-STD-1553B bus. The spacecraft provides the 31VDC nominal voltage and

the side enable pulsed discretes. The GCE assembly consists of two identical

Controllers circuit boards, two identical Motor Driver circuit boards, two identical

DC to DC converters boards, two Backplane boards and the chassis.

The GCE implements programmable micro-stepping to reduce jitter in increments

of 1.2.4.8.16.32 or 64 micro steps/cardinal-steps. Current in all phases driven as a

sinusoid for smooth movement. Optical encoder feedback is provided but not

required to command motor movements. Positional feedback, detection of skipped

steps, and state of health (SOH) current for each motor along with 8 variable

power settings per motor are implemented.