Electric Drive Crash Test Apparatus for Precise Velocity Control
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Solution Overview
Problem
Conventional crash test systems are often inaccurate, time-consuming, and inconvenient to use, failing to provide fast and precise data accumulation for vehicle safety testing.
Innovation Solution
A device and method utilizing an electric drive unit, such as linear electric motors, to control and accelerate a test body towards a physical structure for collision, with a mounting unit that securely holds the test body until a threshold force is exceeded, allowing for precise velocity control and release, thereby improving the accuracy and efficiency of crash tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional crash test systems are used, then crash tests can be performed, but the data accumulation is inaccurate and time-consuming
Solution Approach 1:
The patent replaces conventional mechanical or pneumatic launch systems with an electric drive unit (linear motor) to accelerate the test body. This substitution enables precise control of acceleration and velocity through electrical signals, resulting in accurate and rapid data accumulation without the time-consuming adjustments required by mechanical systems
Solution Approach 2:
The control unit dynamically adjusts electrical parameters (voltage, current, pulse duration) to the linear motor to achieve precise control over the test body's acceleration profile and release timing. This parameter control allows for optimized test sequences that are both accurate and time-efficient
2Ease of manufacture
If conventional pneumatic or hydraulic systems are used, then the test body can be accelerated, but the systems become complex and require high maintenance
Solution Approach 1:
The patent eliminates complex pneumatic or hydraulic systems by using an electric linear motor to accelerate the test body. This single electric drive unit replaces multiple interconnected mechanical components, significantly reducing system complexity while improving ease of manufacture and reducing maintenance requirements
Solution Approach 2:
The invention extracts and removes the complex pneumatic/hydraulic subsystems from the crash test apparatus, retaining only the essential electric drive unit and control system. This extraction simplifies the overall system architecture while maintaining the core functionality of accelerating and releasing the test body
3Stability of the object's composition
If the mounting unit holds the test body firmly, then the test body follows the mounting unit motion, but the test body cannot be released when threshold force is exceeded
Solution Approach 1:
The mounting unit incorporates a dynamic release mechanism that transitions from a firmly engaged state during acceleration to a released state upon collision. The release trigger responds to dynamic conditions (threshold force or signal) to automatically disengage the mounting unit from the test body, providing both stability during motion and adaptability for release
Solution Approach 2:
The system uses feedback from force sensors or control unit monitoring to detect when the threshold force is exceeded or when release should occur. This feedback mechanism ensures the mounting unit maintains firm holding during acceleration while automatically releasing at the appropriate moment, balancing stability and release capability
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
The solution enables more precise and faster crash tests, reducing the need for complex pneumatic or hydraulic systems, enhancing user convenience, and providing reliable data independent of environmental conditions, with improved safety and reduced maintenance efforts.
Implementation Method 1
an electric drive unit (particularly one or more linear electric motors) adapted for mechanically driving the mounting unit and the test body mounted thereon
Data Source
AI summary
A device for investigating a collision between a test body and a physical structure, wherein the device comprises a mounting unit for mounting the test body, an electric drive unit adapted for mechanically driving the mounting unit and the test body mounted thereon, and a control unit adapted for controlling the electric drive unit to accelerate the test body mounted on the mounting unit and for controlling release of the test body from the mounting unit to direct the accelerated test body towards the physical structure for collision, wherein the device is adapted so that the mounting unit and the test body mounted thereon are mechanically driven exclusively by the electric drive unit.