Linear Resonance Actuator Simulation Circuit for Tactile Feedback
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Solution Overview
Problem
Existing methods for developing and debugging tactile feedback systems using physical actuators are inefficient and prone to actuator damage, leading to low performance and high risk of interference from external environments.
Innovation Solution
A method and circuit that simulate a linear resonance actuator using passive electrical devices, such as resistors, capacitors, and inductors, to establish a circuit module that mimics the actuator's electrical and kinematic parameters, allowing for the collection of output quantities or calculation of transfer functions without physically using actuators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical actuators are directly used for developing and debugging tactile feedback systems, then the actuator performance can be tested, but the development efficiency is low and the actuator is prone to damage
Solution Approach 1:
The patent creates an equivalent circuit model that copies the electrical and mechanical characteristics of the linear resonance actuator. By using passive electrical components (resistors, capacitors, inductors) to simulate the actuator's impedance, resonance frequency, and mechanical behavior, developers can test control algorithms and analyze performance without physically connecting real actuators, thus preventing damage while maintaining development productivity
Solution Approach 2:
The patent replaces the mechanical actuator system with an electrical circuit system. The complex mechanical structure and motion of the linear resonance actuator are substituted by an equivalent electrical circuit composed of passive components whose electrical parameters correspond to the mechanical parameters. This substitution allows purely electrical measurement and analysis, eliminating mechanical wear and damage risks
2Measurement precision
If physical actuators are used for algorithm debugging, then real performance data can be obtained, but the process is time-consuming and inefficient
Solution Approach 1:
The equivalent circuit model accurately copies the actuator's electrical parameters (impedance, resonance frequency, quality factor) and mechanical characteristics. By measuring electrical quantities in the circuit model that correspond to actuator performance parameters, developers obtain accurate performance data instantaneously without time-consuming physical testing iterations
Solution Approach 2:
The patent establishes the equivalent circuit model in advance before physical actuator testing. All parameter measurements and algorithm validations can be performed preliminarily on the circuit model, saving time by avoiding repeated physical setup and measurement procedures
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 approach enhances research and development efficiency by simulating the actuator's behavior, reducing the risk of damage and improving the design and development process of tactile feedback systems, while allowing for the prediction of performance before physical model establishment.
Implementation Method 1
establishing a circuit that simulates the linear resonance actuator by using passive electrical devices according to an electrical parameter and a kinematic parameter of the linear resonance actuator
Implementation Method 2
the capacitor, the second inductor and the second resistor are connected in parallel to form a parallel resonance circuit
Data Source
AI summary
A method and circuit for acquiring an output quantity of a linear resonance actuator are disclosed. The method comprises the steps of: establishing a circuit that simulates the linear resonance actuator by using passive electrical devices according to an electrical parameter and a kinematic parameter of the linear resonance actuator, the passive electrical devices comprise at least a resistor, a capacitor and an inductor; selecting a measuring point in the circuit according to an output quantity that the linear resonance actuator needs; and inputting a driving signal of an input source to an input end of the circuit, and collecting an electrical signal that is outputted at the measuring point to obtain the output quantity of the simulated linear resonance actuator. According to the technical solution of the application, a circuit module or system model that simulates the linear resonance actuator is established and used in the process of developing and debugging of projects, to replace the technical solutions that directly use physical actuators, thereby improving the efficiency and avoiding the relying on physical actuators.