Unidirectional Impact Force Feedback Device Using Electromagnetic Mass Acceleration
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Solution Overview
Problem
Existing force feedback devices lack the capability to provide a realistic and varied unidirectional impact force feedback, limiting their application in simulating complex scenarios and being monotonous in operation with low portability.
Innovation Solution
An impact force feedback device comprising a housing, a magnet, and an actuator assembly with a guide rod and coil, where an electromagnetic force is generated to move a mass and impact the housing, providing a large unidirectional impact force feedback without the need for a platform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional vibration-based force feedback devices are used, then the device can provide tactile feedback through oscillatory movements, but the feedback is monotonous and lacks realism in simulating impact scenarios
Solution Approach 1:
The patent transitions from static oscillatory vibration to dynamic impact feedback by allowing the movable mass to accelerate and strike the housing, creating realistic impact sensations that adapt to different game scenarios while maintaining operational reliability
Solution Approach 2:
The patent changes the fundamental parameter of feedback delivery from continuous oscillation to discrete impact events, enabling diverse simulation scenarios (golf, shooting, etc.) while maintaining realistic tactile sensation through controlled mass acceleration and impact
2Ease of operation
If dynamic joysticks are fastened on a desktop or platform, then the device can provide interactive tactile scenarios, but the portability is reduced
Solution Approach 1:
The patent extracts the feedback generation mechanism from a fixed platform dependency by using a self-contained movable mass and spring system that generates impact feedback internally, enabling portability while maintaining interactive capability
Solution Approach 2:
The patent creates a dynamic, self-contained feedback system where the movable mass and spring assembly generate impact sensations without requiring external platform support, improving portability while preserving interactive functionality
3Reliability
If electromagnetic force is used to move the mass for impact feedback, then the device can generate unidirectional impact force, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical actuator systems with an electromagnetic force generation system that directly accelerates the movable mass, simplifying the overall structure while maintaining precise impact force control through electrical signal management
Solution Approach 2:
The patent changes the actuation method from mechanical linkage to electromagnetic force, reducing mechanical complexity while enabling reliable control of impact force magnitude and timing through electrical parameter adjustment
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 device enhances portability and convenience by generating a more realistic and varied tactile sensation, suitable for simulating diverse impact scenarios like golf or shooting games, offering a more complex force feedback experience.
Implementation Method 1
An electromagnetic force is generated by conducting the current through the coil in a direction orthogonal to the magnetic field, and the electromagnetic force is supplied to the mass
Implementation Method 2
The magnet generates a magnetic field within the housing
Implementation Method 3
the mass moves on the guide rod device and impacts the housing to generate an impact force feedback
Data Source
AI summary
An impact force feedback device and an interactive system using the same are provided, wherein a large impact force feedback is generated to provide a real force feedback sensation to the user. The impact force feedback device includes a housing, a magnet, and at least one actuator assembly. The housing carries the actuator assembly. The actuator assembly includes a guide rod device, a mass, and a coil. The guide rod device is disposed on the housing. The mass is disposed on the guide rod device in a sliding manner. The coil generates an electric field when a current is conducted through it. An electromagnetic force is generated by supplying the current in a direction orthogonal to a magnetic field. The electromagnetic force is supplied to the mass such that the mass moves on the guide rod device and impacts the housing to generate the unidirectional impact force feedback.