Electromagnetic Shock Generator Synchronization
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Solution Overview
Problem
Existing pyrotechnic shock generators used in satellite equipment qualification tests face challenges such as powerful and difficult-to-adjust shocks, manual implementation inaccuracies, lack of synchronization, and pollution issues, which are not compatible with sensitive equipment or clean room requirements.
Innovation Solution
A method for synchronizing or dephasing at least two cartridge shock generators using electromagnetic actuators powered by a power and control box, which detects the moment of percussion and adjusts the operation timing through electronic delays, allowing for adjustable shock amplitude and frequency, and ensuring cleanliness by being airtight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If pyrotechnic shock generators with powder or detonators are used, then shock generation capability is achieved, but pyrotechnic certification and safety regulations are required
Solution Approach 1:
The patent replaces pyrotechnic mechanisms (powder ignition, detonators) with an electromagnetic actuator system. The electromagnetic actuator uses electrical energy to generate mechanical motion that drives the impactor, eliminating the need for pyrotechnic materials and associated safety certifications while maintaining shock generation capability.
Solution Approach 2:
The patent changes the energy source parameter from chemical (pyrotechnic) to electrical (electromagnetic). This parameter change allows for precise control of shock amplitude and frequency through electrical parameters, eliminating pyrotechnic risks while maintaining effective shock generation for qualification testing.
2Measurement precision
If multiple shock generators are used to simulate complex shock environments, then test accuracy is improved, but synchronization between generators becomes difficult
Solution Approach 1:
The patent merges multiple shock generators into a synchronized system controlled by a single electronic control unit. The control unit receives a trigger signal and simultaneously activates multiple electromagnetic actuators, ensuring precise temporal synchronization. This allows multiple generators to work together as a coordinated system for accurate complex shock environment simulation.
Solution Approach 2:
The patent implements a feedback mechanism where the electronic control unit monitors and adjusts the activation timing of multiple shock generators based on a common trigger signal. This feedback control ensures that all generators synchronize their operation, enabling accurate reproduction of complex shock sequences with precise timing relationships.
3Ease of operation
If pyrotechnic generators are operated manually, then operation flexibility is maintained, but positioning accuracy and repeatability deteriorate
Solution Approach 1:
The patent implements self-service through automated electronic control of the electromagnetic actuators. The system automatically positions and activates the impactors based on electronic signals, eliminating manual positioning errors. The electronic control system ensures repeatable positioning accuracy while maintaining operational flexibility through programmable control sequences.
Solution Approach 2:
The patent replaces manual mechanical operation with an electromagnetic actuation system controlled by electronic signals. This substitution provides precise, repeatable positioning of the impactor while maintaining operational flexibility through electronic control, eliminating the inconsistency inherent in manual positioning.
4Power
If detonator or powder-based generators are used, then shock amplitude can be generated, but adjustment of amplitude and frequency becomes difficult
Solution Approach 1:
The patent implements dynamic control of shock parameters through the electromagnetic actuator system. The electronic control unit can dynamically adjust the amplitude, frequency, and timing of shock generation by varying electrical parameters (voltage, current, pulse duration). This dynamic control enables flexible adaptation to different test requirements without changing physical components.
Solution Approach 2:
The patent changes the control parameter from fixed pyrotechnic charge mass to variable electrical parameters. By adjusting voltage, current, and pulse duration of the electromagnetic actuator, the system can precisely control shock amplitude and frequency, providing continuous adaptability across a range of test conditions.
5Reliability
If shock generators are used in clean room environments, then equipment qualification is achieved, but particulate pollution from generators becomes problematic
Solution Approach 1:
The patent replaces pyrotechnic mechanisms that generate particulate pollution with an electromagnetic actuator system. The electromagnetic system generates shock through electromagnetic force without combustion or mechanical breakdown, eliminating the generation of particulates. This allows qualification testing to be performed in clean room environments without compromising air quality.
Solution Approach 2:
The patent creates a clean operating environment by using an electromagnetic actuator that does not generate particulate contamination. The system operates in a manner consistent with clean room requirements, maintaining the inert and contamination-free atmosphere necessary for sensitive equipment qualification testing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method optimizes shock generation on equipment, eliminates pyrotechnic risks, and ensures synchronization or phase shifting of multiple generators, providing adjustable and synchronized shocks without pollution, suitable for clean room environments.
Implementation Method 1
actuated by means of an electromagnetic actuator
Data Source
Figure 1~2
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Figure 5~6
AI summary
The present invention relates to a method for synchronizing or phasing at least two cartridge shock generators (1), said at least two shock generators (1) being actuated by means of an electromagnetic actuator powered by a power and control unit, in which the method comprises the steps of: - Starting up at least two shock generators (1) each comprising an inert cartridge, - Detecting a percussion instant of the cartridges of each shock generator, - Synchronizing or phasing said at least two shock generators (1).