X-Axis Rectangular Linear Vibration Motors Performance
Use this advanced X-direction LRA, each interaction between your finger and the touch screen will be a precise, elegant and smart feedback. This customized X-axis linear motor can provide the most vivid tactile feedback comparing previous phone vibration motors. The new rectangular vibrations are shorter and crisper, providing users with a better experience and enjoy various levels of haptic feedback.
Many ideas are possible now, smoother and richer vibration patterns achieved. When linear vibration actuator is working, related with the ringtone, they work better together to give customer seamlessly and intuitively experience. The most frequently mentioned application is Games.
LVM - Linear resonant actuators provide different vibration modes for various game scenes, realizing real-time, accurate, and smooth haptic feedback, making players immersive and providing simulated experience scenes.
- The rated frequency, the motor stabilizes vibration, and the frequency point corresponding to the peak-to-peak value of the acceleration curve is the largest.
- Low temperature vibration is min 0.55Grms (-10°C conditions, rated voltage, the acceleration of the motor when the vibration is stable).
- Rising time is from 0 to 90% of normal vibration @ 1.5Vrms, F0, falling time is From 100% to 10% of normal vibration @ 1.5Vrms, F0.
- The effective value of acceleration when the motor is stable and vibration at rated voltage and resonant frequency.
- Drive voltage value for long-term normal operation of the motor.
- Noise: 10cm distance from microphone, Input Source: F0, 1.5Vrms AC, sine wave
|Length||15 ± 0.1 mm|
|Width||8 ± 0.1 mm|
|Height||3.0 ± 0.05 mm|
|Rated Voltage||0.9Vrms AC|
|Work Voltage||0.1 − 1.0Vrms AC|
|Overdriver Voltage||9Vp AC Motor quick start voltage|
|Rated Current||Max. 130 mArms|
|Resistance||9 ± 1Ω|
|Rated Vibration||0.9 ± 0.15Grms|
|Resonance Frequency||170 ± 8 Hz|
|Rising Time||Max. 100 msec|
|Falling Time||Max. 130 msec|
|Mechanical Noise||Min 10MΩ @100VDC|
|Weight||2.1 ± 0.1 Gram|
To drive this kind of linear resonant actuator, you can use TI's DRV26XX series, you can buy from the following link: https://www.digikey.com/en/product-highlight/t/texas-instruments/drv2605-haptic-driver
LVM Haptic Feedback Vibration Motor Outline Drawing
This kind of haptic feedback vibration motor's main feature is fast rise and fall times and superior braking ability, the LRA vibration motors are the best choice for haptic applications such as wearable device such as full body vr suit. Their relatively simple internal construction offers high reliability and exceptionally long life when compared with brushed eccentric rotating mass vibration motors. NFP-motor’s LRA have an internal mass that oscillates back and forth along the X-axis at its resonant frequency. They have long lifetime that is similar to brushless vibration motors.
This retangular taptic engine style buzzer is used for Huawei Mate 30 Pro
To learn more from IFIXIT ?
https://www.ifixit.com/Teardown/Huawei+Mate+30+Pro+Teardown/127743 Huawei mate 30 pro equipped with X-axis linear motor model NFP-ELV081530 provides realistic and accurate tactile feedback.
It is an X-Direction vibration motor. The springs on both sides drive the vibration block in the middle, and the pulse current drives the mass block to reciprocate left and right to create a precise vibration feedback effect.
This kind fo LRA should be driven by IC chip (such as TI's DRV26XX series) which is same as Z-axis miniature vibration motor. The first-generation technology only provides vibration, and the feedback is not accurate enough and rough. It only provides a vibration reminder function.
The second generation is an upgrade of coin vibration motor. It is upgraded to linear vibration on the basis of ordinary ERM flat vibration motor, with longer life span, shorter start-stop time, and Z-axis vibration more realistic simulation button function. The third-generation vibration feedback technology is more real than ever. This square box brings innovation in touch technology. Currently, the product is only applied to relatively high-end mobile phones.
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