Signal Torque Module Assembly for Control Moment Gyroscope

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Solution Overview

Problem

Conventional control moment gyroscopes (CMGs) face limitations such as bulky and heavy torque module assemblies, uneven gear tooth wear, and inefficient electrical connector routing, which affect torque output and operational lifespan.

Innovation Solution

A signal torque module assembly (STMA) integrates a torque module assembly (TMA) and signal module assembly, featuring a compact and lightweight design with radially balanced gear tooth loading and a longitudinal channel for efficient electrical connector routing through the gear train.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If conventional torque module assembly design is used, then high torque output is achieved, but the assembly becomes bulky and heavy

Engineering Contradiction:

Improvetorque outputVSAvoidTMA weight

Core Design Contradiction:

ForceVSWeight of stationary object

Solution Approach 1:

The patent combines the signal module assembly (SMA) and torque module assembly (TMA) into a single integrated signal torque module assembly (STMA). The SMA is mounted to the TMA housing, sharing common structural elements and mounting interfaces, which reduces overall weight and volume while maintaining high torque output capability through optimized component layout and shared support structures

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The elongated electrical connector is routed through the gear train components of the TMA, nesting the connector path within the existing mechanical structure. This eliminates the need for separate connector routing channels and reduces the overall envelope and weight of the assembly while maintaining electrical connectivity

Inventive Principle:

Principle #7Nested doll (Nesting)

2Force

If conventional TMA design with asymmetrical gear support is used, then high torque output is achieved, but uneven gear tooth wear occurs

Engineering Contradiction:

Improvetorque outputVSAvoidoperational lifespan

Core Design Contradiction:

ForceVSReliability

Solution Approach 1:

The patent employs asymmetrical gear support structures with strategically positioned bearings and support elements that compensate for the inherent asymmetry in torque transmission. The gear train includes support bearings at specific locations that distribute loads more evenly across gear teeth during both clockwise and counter-clockwise operation, preventing uneven wear while maintaining high torque capability

Inventive Principle:

Principle #4Asymmetry

3Ease of operation

If conventional CMG design is used, then functional requirements are met, but inefficient electrical connector routing increases volume

Engineering Contradiction:

Improveconnector routing efficiencyVSAvoidCMG volume

Core Design Contradiction:

Ease of operationVSVolume of stationary object

Solution Approach 1:

The elongated electrical connector is routed through the gear train components of the TMA, nesting the connector path within the existing mechanical structure. The connector passes through the gear train's internal passages and mounting structures, eliminating the need for separate connector routing channels and reducing the overall envelope and weight of the assembly

Inventive Principle:

Principle #7Nested doll (Nesting)

4Weight of stationary object

If integrated STMA design is used, then volume and weight are reduced, but connector routing through gear train becomes complex

Engineering Contradiction:

ImproveSTMA weightVSAvoidconnector routing complexity

Core Design Contradiction:

Weight of stationary objectVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The gear train components serve dual functions: transmitting mechanical torque from the torque motor to the rotor assembly and providing a routing pathway for the electrical connector. This multi-functionality reduces the need for separate dedicated connector channels, simplifying the overall design while maintaining weight and volume reductions

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS7985162B2Signal torque module assembly for use in control moment gyroscope

Publication Date: 2011.07.26 HONEYWELL INTERNATIONAL INC

AI summary

A signal torque module assembly (STMA) is provided for use within a control moment gyroscope of the type that includes a rotor assembly. The STMA comprises a torque module assembly (TMA), which includes: (i) a TMA housing, (ii) a torque motor coupled to the TMA housing, and (iii) a gear train coupled to the TMA housing and mechanically coupling the torque motor to the rotor assembly. A signal module assembly is coupled to the TMA housing, and an elongated connector electrically couples the signal module assembly and the rotor assembly. The elongated connector extends through the gear train.