Linear motor brake method and device, and tactile feedback system

Abstract

The invention provides a linear motor braking method and device as well as a tactile feedback system. The braking method comprises the steps as follows: S100, detecting vibration information of a linear motor in a vibration state and obtaining the vibration speed of the linear motor through analysis; S200, inputting an initial braking driving signal having the opposite phase with the vibration speed to the linear motor so as to reduce the amplitude of the linear motor initially and realize initial braking of the linear motor; S300, detecting the vibration information of the linear motor after initial braking; S400, analyzing the vibration information detected in S300 and obtaining a feedback braking driving signal according to an analysis result of the vibration information; S500, inputting the feedback braking driving signal to the linear motor after initial braking to reduce the amplitude of the linear motor again and realize secondary braking of the linear motor. With the adoption of the method, quick reduction of the amplitude of the linear motor can be realized, the braking time can be shortened, and the quick braking function of the linear motor can be realized when the amplitude of the linear motor is very small.

Description

technical field [0001] The invention belongs to the field of linear motors, and in particular relates to a linear motor braking method, a linear motor braking device and a tactile feedback system with the linear motor braking device. Background technique [0002] Due to its superior performance of small size, quick start, and fast braking, linear motors are more and more widely used in vibration feedback applications, and are often used to simulate various vibration situations. In various applications, there is a kind of situation that requires the vibration of the linear motor to achieve fast braking, but the acceleration of the linear motor is often very slow to stop. figure 1 A linear motor braking device in the prior art is shown. This kind of device generally includes a main control module 5 , a driving module 2 connected to the main control module 5 and a linear motor 1 connected to the driving module 2 . There is no feedback control in this kind of tactile feedback ...

AI Technical Summary

Problems solved by technology

There is no feedback control in this kind of tactile feedback system, so it cannot monitor and feedback the fluctuation of individual parameters and environmental changes

In the prior art, there is a linear motor braking device with feedback control, which uses default voltage and waveform to control the linear motor braking, which cannot achieve optimal and fastest braking; when the vibration is small, the accuracy of the driving voltage itself, The sampling rate and its subtle changes, the number of voltage bits, optimized measurement devices, and deviations due to environmental changes limit the effect of further controlling the driving waveform to implement braking

In addition, this kind of feedback control can only be based on the tracking of F0, and can only be driven in a part of the cycle, which leads to the completion of the braking work after several cycles, and the stability is not good

Images