Why is the Xiaomi mi 10 equipped with all standard transverse linear motors? Lei Jun hard core science popularization.
By Dahlia Bronson 2020-02-19 1488 17
According to popular science, the rotor motor drives the eccentric rotor to rotate through a small motor, resulting in vibration. Because of its simple structure and small size, it is more common in many middle and low-end products, and a small number of high-end computers are still in use. Slow response, unable to achieve rapid start and stop, and some procrastination of mobile phone vibration are the main shortcomings of the rotor motor. The vibration effect of "buzzing" is caused by the flat rotor motor, which is almost only used in thousands of yuan machines at present.
The linear motor is similar to the pile driver, which is composed of stator and actuator. The electrified coil receives Lorentz force in the magnetic field, and the actuator moves back and forth along the fixed direction to produce a sense of vibration. The frequency of the motion depends on the frequency of the driving signal, and it has the characteristics of fast response, strong vibration sense and vibration direction, and the vibration frequency and waveform can be adjusted, so more complex and customized vibration effects can be achieved.
Linear motor is divided into Z-axis linear motor and X-axis linear motor, among which the performance of X-axis linear motor is the best, which is generally found in flagship models. To sum up, the ranking of motors is X-axis linear motor > Z-axis linear motor > rotor motor > flat rotor motor. The start and stop time and the amount of vibration (characterizing the vibration intensity) are the two key indicators to measure the quality of a motor.
According to the official introduction, the X-axis linear motor on the Xiaomi 10 has a start / stop time of 4ms and a peak vibration of up to 3.1Gppp, which can achieve a crisp, mechanical keyboard-like feedback, short and powerful. MIUI blessing can further enrich and optimize the user experience and maximize the potential of this X-axis linear motor.
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