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Some Knowleges about Mobile Motor
Do you like dadada or buzz vibration of mobile phone.
一、 Classification of vibration motors
1. Eccentric Rotating Mass ERM motor
If you often look at the disassembly drawing, you can know that the rotor motor is the component similar to the reduced version of the 4WD motor under the battery. It uses the eccentric rotor in the motor to realize vibration. The time from the start to the end of the motor is about 60ms, and the vibration amount is only about 0.6Gpp. It makes people feel that they can't start and stop quickly, and the vibration is not timely. The sound performance is the "buzz" that people often tease.
2. Linear motor
It is no longer the rotor that generates vibration, but the voltage drives the moving mass block linked with the spring, and the mass block is vibrated under the resonance of the spring. The starting and stopping time of the linear motor is only about 15ms, which is much faster than that of the device motor. The vibration amount is also much higher, reaching about 1.7Gpp. This is why the linear motor sounds like "Da Da Da Da", which is very pleasant to vibrate. In addition, because the vibration frequency and amplitude can be adjusted, mobile phones equipped with linear motors generally have different vibration effects in different scenarios, greatly improving the user experience. Linear motor can be divided into two
categories, circular linear motor and transverse linear motor.
① Coin linear motor The coin linear motor uses the Z-axis for vibration, which is mainly circular in shape, so it is also called the circular linear motor/Z-axis linear motor. Due to the limitation of the mobile phone body and its internal space, the circular linear motor is usually smaller in size, short in vibration stroke, and smaller in vibration amount. Its use feel is not as good as that of the horizontal linear motor. This is the motor vibration system with the best feel at present (provided that the system can keep up with the motor optimization). It is easy to understand from the name that its vibration mode is horizontal, also known as X-axis linear motor. The transverse linear motor was first known as the iPhone 7 series released in September 2016. At that time, people were surprised why the iPhone without the physical Home button could have the same vibrating feel as the physical button. Later, it was discovered that the horizontal linear motor was responsible for the disassembly. Since then, people have begun to notice the vibration experience of mobile phones. 二、Brief history of vibration motor In the era of functional phones, most mobile phones do not vibrate and do not vibrate at all. It's very cool to press the physical keys. At that time, the voice was only needed for message notifications such as phone messages. In the early days of smart phones, manufacturers began to add rotor motors to smart phones without physical key feedback. At that time, there were not only SMS and phone notifications, but also third-party apps began to push messages. Vibration became particularly important. Moreover, in order to recover the pleasure of physical buttons in the era of functional machines, motors are also gradually being valued. The history of mobile phone vibration motor can generally be divided into three stages: rotor motor before 2016, linear motor from 2016 to 2019, and transverse linear motor at present. 1. Rotor motor before 2016 In fact, smartphones at that time, especially Android phones, simply added a vibration. Moreover, users at that time did not attach importance to vibration experience, so manufacturers did not spend too much energy on vibration. If I go back to experience those ancient models, I will ask myself how I could tolerate such a bad vibration at that time. 2. Linear motor from 2016 to 2019 During this period, it is mainly because Android mobile phone manufacturers are improving the vibration experience of mobile phones. The vibration of iPhone combined with the optimization of iOS has been perfect. Meizu was the first to pay attention to vibration. At that time, it used a transverse linear motor in Meizu 15 series and made in-depth optimization and adaptation on the system. Later, consumers noticed that the vibration of mobile phones can also be so refreshing, and manufacturers began to attach importance to the vibration experience of their flagship mobile phones. Samsung, OPPO and Huawei have all started to use horizontal linear motors. Only because of the cost, the horizontal linear motor can be seen on the flagship mobile phone. 3. Transverse linear motor at present In several mobile phone conferences after the year, manufacturers spent some time talking about their mobile phone's vibration experience, what optimization they had made in the system, and what 4D game shock bonus they had made when playing games. It makes ordinary users pay more and more attention to vibration, which leads to the image metaphor of "buzzing" and "da da da" some time ago. However, because of the cost, it is difficult to see the transverse linear motor for low-end mobile phones. However, once the large demand for the horizontal linear motor increases, its price will gradually decline. At that time, the low-end mobile will also have a "Da Da Da" vibration. At last: At this stage, the mobile phone should be selected, or the dahdahdah linear motor should be selected. It is better to choose the transverse linear motor. Of course, the iPhone's vibration experience is still absolutely leading. Apple always leads other mobile phone manufacturers in some details that affect daily use, such as vibration and speakers. However, after three or four years of Apple's leadership, Android has also followed suit, gradually using better hardware and optimizing the system can also give users a better vibration experience. BY JI FEI HOLDING LIMITED www.vibrationmotor.net
②X linear motor
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Pulished on Feb. 09, 2024
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