Multi-Motor Frequency Control for Portable Devices
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Solution Overview
Problem
Existing systems are unable to effectively control multiple vibration motors in portable consumer electronic devices, limiting their ability to provide complex and varied vibration feedback without a complex control system.
Innovation Solution
A multi-motor frequency control system comprising an event generation module, control module, information storage module, frequency processing module, driving module, and motor module, which calculates and distributes vibration frequencies to multiple motors based on event information, enabling efficient and timely vibration feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a simple control system is used for one motor, then the system complexity is low and ease of operation is high, but the system cannot control multiple vibration motors effectively
Solution Approach 1:
The control system uses a single multi-functional control module that can manage multiple vibration motors through different control modes (first control mode for single motor, second control mode for multiple motors). This universal control approach allows the system to adapt to different motor configurations without requiring separate control circuits for each motor, thereby achieving multi-motor control capability while maintaining relatively simple system architecture.
Solution Approach 2:
The control system dynamically switches between different control modes based on the operating conditions. When only one motor needs to operate, the system enters the first control mode; when multiple motors need to operate, it switches to the second control mode. This dynamic adaptability allows the system to optimize its control strategy in real-time, achieving versatile multi-motor control while keeping the control logic manageable through mode-based segmentation.
2Adaptability or versatility
If multiple vibration motors are used in portable electronic equipment, then the vibration feedback capability is enhanced, but the control system becomes complex and difficult to implement
Solution Approach 1:
The control method is segmented into distinct control modes: the first control mode handles single-motor operation with straightforward frequency control, while the second control mode handles multi-motor operation with coordinated frequency distribution. By segmenting the control logic into mode-based scenarios, the system makes complex multi-motor control more manageable and easier to implement, as each mode has its own simplified control strategy rather than requiring a single complex control algorithm for all scenarios.
Solution Approach 2:
The control system introduces an intermediary frequency processing module that acts as a mediator between the control module and multiple vibration motors. This intermediary processes the control signals and distributes appropriate frequency signals to each motor based on the current operating mode, thereby simplifying the control implementation by adding a dedicated signal processing layer that handles the complexity of multi-motor coordination.
3Adaptability or versatility
If a simple frequency control system is used, then the system is easy to implement, but it cannot provide rich and varied vibration feedback for multiple motors
Solution Approach 1:
The control system employs periodic frequency switching and modulation to create varied vibration feedback patterns. By periodically adjusting the frequency signals sent to multiple motors according to different control modes and event types, the system generates diverse vibration patterns (such as alternating vibrations, synchronized vibrations, or sequential vibrations) without requiring complex hardware structures. This periodic action enables rich vibration feedback variety through temporal variation rather than spatial complexity.
Data Source
AI summary
The invention provides a multi-motor frequency control system and a control method thereof. The system includes an event generation module, a control module, a signal selection module, a motor module including multiple motors, a driving module for driving the motor vibration, a frequency processing module, and a frequency reading module for reading the vibration frequency of at least one motor and giving feedback to the frequency processing module. Further, a control method of the multi-motor frequency control system is also provided.