Linear Motor Vibration Control With Resonance-Matched Waveforms
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Solution Overview
Problem
Existing control methods for linear motors lack universality, as different types and characteristics of linear motors require specific control methods, leading to inefficiencies and inconsistent performance.
Innovation Solution
A method and apparatus for controlling linear motors by determining a vibration description file that matches the motor's characteristics, adjusting waveforms to ensure smooth startup and stop transitions, and adapting frequencies to resonant frequencies, using interactive interfaces to generate and customize vibration description files.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different control methods are used for different types of linear motors, then the performance of each motor type is optimized, but the complexity of the control system increases and universality is reduced
Solution Approach 1:
The patent implements a universal control method that can control both X-axis and Z-axis linear motors using the same control logic and parameter settings. The control system is designed to handle different motor types through a unified interface, eliminating the need for separate control methods for each motor type while maintaining optimal performance for both types.
Solution Approach 2:
The patent uses parameter adaptation techniques where the control system adjusts motor-specific parameters (such as resonance frequency, amplitude, and duty cycle) based on the motor type being controlled, while keeping the overall control algorithm and structure universal. This allows the same control framework to work for different motor types by simply changing adjustable parameters rather than rewriting control logic.
2Productivity
If traditional vibration waveforms are used, then the linear motor can operate, but the startup and stop transitions cause noise and interference
Solution Approach 1:
The patent applies preliminary action by pre-smoothing the vibration waveform at the startup and stop phases before the motor actually begins or ceases operation. The waveform is designed with gradual amplitude transitions and frequency ramping that prepare the motor for smooth operation, preventing sudden changes that would generate noise and interference. This preliminary smoothing of the control signal eliminates the harmful transient effects.
3Speed
If the vibration amplitude changes rapidly, then the response speed is improved, but the stability of vibration sensation deteriorates
Solution Approach 1:
The patent implements dynamic control of the vibration waveform where the amplitude and frequency are adjusted in real-time based on the operational phase. During startup, the amplitude increases gradually following a smooth curve rather than jumping abruptly. During steady-state operation, the amplitude is maintained at optimal levels. During stop, the amplitude decreases smoothly. This dynamic adjustment maintains both fast response and stable vibration sensation throughout the operation cycle.
Data Source
AI summary
Embodiments of this application provide a method and apparatus for controlling a linear motor, a device, and a readable storage medium. The method for controlling a linear motor includes: determining, in response to an operation instruction, a vibration description file of an operation object of the operation instruction; and outputting a vibration sensation that meets a waveform requirement of the vibration description file, where the vibration sensation is provided by a linear motor in a first vibration state, and the first vibration state matches a characteristic of the linear motor.