Haptic Rendering Device Closed-Loop Vibration Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current haptic rendering technologies rely mainly on vibration feedback, which is inefficient in providing a realistic and stable tactile experience due to the complex mechanisms involved in simulating mechanical, temperature, and chemical signals, limiting their application in multimedia terminals and virtual reality.
Innovation Solution
A haptic rendering device comprising a substrate with a driver and a vibration sensor, where the controller adjusts the driving signal based on detection voltage signals from the sensor to optimize the vibration amplitude and frequency, ensuring a stable haptic experience by using piezoelectric accelerometers and drivers to resonate in a stable state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If vibration feedback is used for haptic rendering, then the implementation is simple, but the tactile experience is not realistic and stable
Solution Approach 1:
The patent implements a closed-loop feedback control system where vibration sensors detect the actual vibration state of the haptic rendering device, and the controller adjusts the driving signal based on this feedback to maintain stable resonance. This resolves the contradiction by adding feedback mechanisms that ensure tactile experience stability while maintaining the simplicity of vibration-based implementation.
Solution Approach 2:
The patent utilizes mechanical vibration principles by employing vibration sensors (accelerometers, velocity sensors, or displacement sensors) to detect the vibration characteristics of the device. By operating at resonant frequencies and using vibration-based sensing, the system achieves realistic tactile feedback while maintaining implementation simplicity through well-established vibration technology.
2Force
If vibration amplitude is increased to enhance haptic effect, then the tactile feedback is stronger, but the system stability decreases
Solution Approach 1:
The patent employs dynamic adjustment of vibration parameters by continuously monitoring the vibration state through sensors and adjusting the driving signal in real-time. This allows the system to maintain optimal vibration amplitude for strong haptic feedback while dynamically adapting to maintain stability, resolving the contradiction between force strength and system stability.
Solution Approach 2:
The patent changes vibration parameters (amplitude, frequency, duty cycle) based on feedback from vibration sensors. The controller adjusts these parameters dynamically to achieve the desired haptic effect strength while maintaining system stability through continuous parameter optimization based on actual vibration conditions.
3Adaptability or versatility
If complex mechanisms are used to simulate multiple physical signals, then the haptic rendering capability is enhanced, but the device complexity increases
Solution Approach 1:
The patent uses a universal vibration-based mechanism that can render multiple types of haptic feedback (mechanical, temperature, chemical signals) through a single integrated system. The vibration sensors and controller work together to simulate various physical signals, achieving enhanced haptic rendering capability without proportionally increasing device complexity.
Solution Approach 2:
The patent replaces complex mechanical mechanisms for simulating multiple physical signals with a unified vibration-based system. By using vibration sensors and electronic control to substitute for separate mechanical implementations, the system achieves versatile haptic rendering while maintaining relatively simple device architecture.
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 provides a stable and realistic haptic experience by dynamically adjusting the driving signals to maintain optimal vibration states, enhancing user interaction in multimedia terminals and virtual reality applications.
Implementation Method 1
the vibration sensor comprises an accelerometer, a velocity sensor, or a displacement sensor. In some embodiments, the accelerometer comprises at least one of a piezoelectric accelerometer, a capacitive comb accelerometer, a bulk-silicon capacitive accelerometer, or a piezoresistive accelerometer.
Implementation Method 2
a first driver arranged on the substrate and configured to vibrate and drive the substrate to vibrate after receiving a first driving signal
Data Source
AI summary
The present disclosure provides a haptic rendering device, a method, a display device and a controller. The haptic rendering device includes: a substrate; a first driver arranged on the substrate and configured to vibrate and drive the substrate to vibrate after receiving a first driving signal; a vibration sensor arranged on the substrate and configured to generate a first detection voltage signal according to an amplitude or a frequency at which the first driver vibrates together with the substrate in a case where the substrate vibrates; and a controller configured to output the first driving signal to the first driver, receive the first detection voltage signal, and adjust the first driving signal according to the first detection voltage signal.