What Is Linear Vibration Motors?
LRA is a spring-mass system that vibrates in a linear motion. Inside, there is a coil suspended by springs and when voltage is applied, the coil generates a magnetic field. The coil interacts with the magnet and mass, whereas the magnetic field varies with the applied drive signal, the magnet and mass move up and down creating force. This movement is perceived as a vibration.
Linear vibration motors application:
Linear resonant actuators main features:
- Fast rise and fall times, quick start and break time.
- Light weight, small size, excellent choice for wearable applications.
- Request to be driven by IC chips from TI’s chip DRV2605.
- Exceptionally long lifetime 200,000cycle, on-2s; off-1s.
- High reliability compared to ERM.
- Low consumption compared to ERM.
- Coin shape: Z-axis vibration, Square shape: X-axis vibration
LRA vs ERM typical characteristics
LRA is the short of linear resonant actuator, it is a popular vibration motor, for it works differently from the previous generation, it has long lifetime and fast rising time and brake time, generally 20ms.
Linear vibration motors are more suitable for the wearable devices, such as VR suit, commercial simulator, VR walker sports, virtual reality boxing shooting, VR haptic suit and gloves those request light weight, and the linear resonance vibration motor can convey complex waveforms to detailed tactile information.
Order Linear Vibration Motors Online
Recently, MDM launched 2 models linear vibration motors, ELV0832B(Z-axis vibration motor), ELV081530(Advanced Rectangular LRA used in Huawei Phone)
Free 10pcs 8mm x 3mm Linear Vibration Motor LRA Model NFP-ELV0832B 235HzAdd to cart
12mm Length Newest Linear Resonant Actuator – 4.5mm width Model NFP-ELV4512308.00$ Add to cart
8mm Length Linear Resonant Actuators -9mm Width Type Model NFP-ELV0809358.00$ Add to cart
9.5mm X 9.5mm Rectangular Linear Vibration Actuator Model NFP-ELV9595358.00$ Add to cart
6mm X 12mm X 2.8mm Rectangular Linear Vibration Actuator Model NFP-ELV061228 Using In Cellular Phone To Provide Haptic Feedback8.00$ Add to cart
8mm X 15mm Rectangular LRA Linear Resonant Actuator Haptic Vibration Motor Model NFP-ELV081530-B8.00$ Add to cart
15mm Length Rectangular LRA Vibration Motor – LRA NFP-ELV081530 170Hz Used For Haptics8.00$ Add to cart
8mm Diameter Linear Motor Vibration 10PS/100PS USD $8.8 Model NFP-ELV0832B 205Hz8.80$ – 65.00$ Select options
8mm Linear Vibration Motor 3.25mm Thickness NFP-ELV0832B 205Hz or 235Hz4.50$ Select options
205Hz 8mm Small Linear Vibration Motor – 150mm Wire JST SHR-02V-S-B Connector Model NFP-ELV0832B8.00$ Add to cart
Rectangular Lra Vibration Motor NFP-ELV1411A3.00$ Add to cart