Motion Simulator Dynamic Frame with Multi-DOF Guide Arms
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Solution Overview
Problem
Current motion simulation platforms, especially those for gaming, struggle to realistically simulate linear movements like surge and sway due to their limited configuration, which results in detectable opposite accelerations and difficulties in generating yaw and roll, making them less effective for professional applications.
Innovation Solution
A motion simulation apparatus with a dynamic frame defined by a drive arm and guide arms, allowing two degrees of freedom at the substrate and three degrees of freedom at the motion platform, along with two actuators that converge towards each other, enabling smooth transitions from linear acceleration to virtual acceleration without detectable opposite forces, effectively simulating the six types of vehicle movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a two degree of freedom (2 DOF) pivot arrangement is used to simulate acceleration and braking, then pitch movement is generated, but detectable virtual deceleration occurs and realistic turning simulation is limited
Solution Approach 1:
The motion simulation is segmented into multiple independent degrees of freedom: pitch (2 DOF), roll (1 DOF), and yaw (1 DOF), each handled by separate mechanical subsystems. This allows realistic simulation of acceleration, cornering, and turning without the detectable artifacts that occur when trying to simulate all movements with a single 2 DOF system.
Solution Approach 2:
The system transitions from a static 2 DOF pivot arrangement to a dynamic multi-DOF system where the motion platform can independently adjust pitch, roll, and yaw angles. This dynamic capability allows the simulator to adapt its orientation to match the virtual vehicle's movements, eliminating detectable virtual deceleration and improving overall simulation realism.
2Adaptability or versatility
If six actuators are used in a Stewart platform configuration, then all six types of vehicle movement can be simulated, but the platform becomes expensive and bulky
Solution Approach 1:
The invention extracts and eliminates three of the six actuators from the traditional Stewart platform configuration. By using a motion platform that can pivot with multiple degrees of freedom and incorporating guide arms with spherical joints, the system achieves equivalent or superior simulation capability with fewer actuators, reducing both cost and structural complexity.
Solution Approach 2:
The motion platform is designed with multi-functionality, where a single pivoting mechanism handles multiple degrees of freedom (pitch, roll, and yaw) that would traditionally require separate actuators. The guide arms with spherical joints provide universal movement capability, allowing the system to simulate all six types of vehicle movement without needing six dedicated actuators.
3Adaptability or versatility
If the extent of movement is increased to improve simulation coverage, then more vehicle maneuvers can be simulated, but the simulation becomes less realistic
Solution Approach 1:
The system uses dynamic adjustment of the motion platform's orientation angles (pitch, roll, yaw) to maintain simulation realism across the full range of movements. Rather than relying on large physical displacements, the system dynamically changes its angular configuration to match the virtual vehicle's姿态, allowing extensive movement coverage while maintaining perceptual realism.
Solution Approach 2:
The invention transitions from linear displacement-based simulation to angular orientation-based simulation. By using a pivoting motion platform that operates in angular dimensions rather than linear dimensions, the system can simulate a wide variety of vehicle maneuvers without the detectable artifacts that occur with large linear movements, thereby maintaining realism while expanding movement coverage.
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 configuration enhances the realism of motion simulation by allowing seamless transitions and accurate representation of acceleration, deceleration, and turning, making it suitable for both professional and gaming applications without the need for expensive Stewart platforms.
Implementation Method 1
a drive arm, the drive arm having a fixed end that is pivotally mounted on a substrate to pivot relative to the substrate with two degrees of freedom of movement and a working end that is pivotally connected to the motion platform to pivot with respect to the motion platform with two degrees of freedom of movement
Implementation Method 2
two guide arms, each guide arm having a lower end that is pivotally mounted on the substrate to rotate relative to the substrate with three degrees of freedom of movement and an upper end that is pivotally connected to the motion platform to rotate relative to the motion platform with three degrees of freedom of movement
Implementation Method 3
the drive arm, the guide arms and the motion platform defining a dynamic frame that can pivot with respect to the substrate such that a resultant movement of the motion platform can be imparted to the carrier
Data Source
AI summary
A motion simulation apparatus includes a motion platform. A carrier for carrying a user is mounted on the motion platform. The apparatus has a drive arm with a lower end that is pivotally mounted on a substrate to pivot relative to the substrate with two degrees of freedom of movement and an upper end that is pivotally connected to the motion platform to pivot with respect to the motion platform with two degrees of freedom of movement. The apparatus has two guide arms, each guide arm having a lower end that is pivotally mounted on the substrate to pivot relative to the substrate with three degrees of freedom of movement and an upper end that is pivotally connected to the motion platform to pivot relative to the motion platform with three degrees of freedom of movement. The drive arm, the guide arms and the motion platform define a dynamic frame that can pivot with respect to the substrate such that a resultant movement of the motion platform can be imparted to the carrier.