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Linear Resonant Actuator

TSL electronics specializes in designing and producing a diverse selection of top-quality, affordable vibration motors.

If you’re in need of precise micro vibration motors, you’ve come to the right place. Our products are guaranteed to meet the highest standards of quality, and we offer detailed specifications, datasheets, performance reports, and relevant certifications.

We provide a variety of connection interfaces to suit your needs. Additionally, all our vibration motors can be fully customized to fit specific applications. Feel free to reach out for sample requests and detailed price quotations.

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Explore Our Linear Resonant Actuator

The Technologies Of LRA Vibration Motors

Linear Resonant Actuator

A linear resonant actuator (LRA) is a vibrating motor that produces oscillating force along a single axis. LRAs respond more quickly than ERM coin motors. For example, an LRA takes only 50ms to reach the highest vibration level, while a coin motor takes between 100ms and 200ms. LRAs, particularly Z-axis vibrating motors, provide tactile feedback perpendicular to their surface, improving acceleration and feedback quality.

As a result, many high-end applications prefer LRAs. Unlike brushed motors, which wear down over time due to brushes, the LRA motor is brushless, using a voice coil to drive the mass, with only the spring being the movable part that can fail. LRA motors generally last over five times longer than traditional coin motors.

It is important to note that LRA motors operate on AC power, meaning users need to add IC drivers to the PCB board to activate them.

 
 
 
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How can LRA vibration motors be driven?

1.Use AC Voltage

LRA vibration motors in iphone

LRA motors require alternating current (AC) voltage to operate, as they cannot function with direct current (DC). AC provides the necessary commutation for the motor since it lacks a commutator.

2. Need A LRA Driver IC

vibration motor linear resonant actuator driver IC

You need a specific driver IC designed for LRA motors.These haptic driver ICs are capable of driving both ERM (Eccentric Rotating Mass) motors and LRA motors.

3. Choose the Right Frequency

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he AC signal applied to the LRA motor should match the natural resonant frequency of the motor to ensure optimal performance. Typically, the IC drivers can handle this automatically by generating the correct sine wave signal.

Key Parameters of Linear Motor Specifications

Rise Time & Fall Time

The rise time for a typical linear vibration motor is around 0-10ms, with a maximum fall time of 80ms. In comparison, the rise time for an ERM motor is approximately 120ms, and the fall time is 180ms. This means that linear motors have significantly faster response times, with rise and fall times being only a fraction of those of ERM motors.

lra vibration motor test
lra vibration motor resonant frequency f0

Resonant Frequency (F0)

Each linear motor has a fundamental parameter known as F0, which refers to the resonant frequency of the motor’s internal spring system. The resonant frequency (F0) corresponds to the point where the linear resonant actuator produces its maximum vibration force. For example, the LRA0832BE03L15, a small 8mm linear resonant actuator, has a resonant frequency of 235 Hz, which dictates its optimal performance in generating vibration.

Motor Customized Solutions

At TSL, we transform your unique requirements into high-performance, reliable motor solutions. From concept to mass production, our engineering expertise ensures your devices stand out with durability and efficiency.

To Accelerate Your Project, Prepare These Details:
  • Electrical Requirements: Operating voltage , Current consumption limits, Drive signal type , etc.
  • Mechanical Constraints:Max dimensions,Mounting method,Shaft direction,etc.
  • Performance Targets:Vibration force (G-level) at specific frequencies ,Start/stop response time ,Durability,etc.
  • The timeline for this project and the annual consumption of motor products.
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Why Choose TSL?

We are here to assist you throughout the entire process, from prototype development to large-scale, cost-efficient mass production.

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Founded in 2009, TSL Motors has been at the forefront of micro vibration motor design and manufacturing. With ISO 9001, ISO 14001, and ISO 45001 certifications, TSL is committed to delivering high-quality products that meet international standards.

We offer a wide range of motor solutions, including coin vibration motors, coreless DC motors, LRA vibration motors, and mini BLDC motors. Our motors are engineered to be cost-effective, reliable, and customizable, catering to various applications across diverse industries.

At TSL, we strive to provide our valued customers with innovative solutions tailored to their specific needs.

Designing motors and mechanisms for a diverse array of industrial, medical, and consumer applications.

Our skilled sales engineers are adept at quickly grasping your unique requirements and offering tailored services. These custom services encompass  motor performance parameters such as rated voltage, speed, and current, along with additional features like connectors, wire lengths, rubber boots, plastic/metal capsules, brackets, and spring contacts.

We provide comprehensive support, including detailed drawings and specifications, throughout the entire process from prototype development to mass production.

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Our motor manufacturing process is designed to be flexible, enabling us to accommodate both large-scale production and specialized, high-value custom builds to meet diverse customer needs.

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We use in-house designed dynamometers to thoroughly test and validate every sample and production batch, ensuring the highest standards of quality and performance.

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TSL Motor is an ISO 9001:2015 certified company, committed to ensuring that each motor meets your precise specifications and performance standards. We have developed a comprehensive after-sales support system, offering prompt responses to customer inquiries and addressing any issues or needs that may arise. Our commitment doesn’t end with delivery—we are here to support you every step of the way.

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The Advantage Of Linear Vibration Motor

Fast Response Time

lra vibration motor fast response time

LRAs provide quick rise and fall times, allowing them to deliver rapid, precise, and efficient haptic feedback. This results in a more responsive and immersive user experience.

Precise Control

lra vibration motor is used in iphone

Linear vibration motors provide more controlled, precise vibrations compared to traditional eccentric rotating mass (ERM) motors. This is particularly useful in applications requiring fine-tuned feedback, like haptic feedback in devices.

Customizable Vibration Patterns

lra vibration motor customizable vibration patterns

The ability to control vibration frequency, amplitude, and duration allows for precise customization. Manufacturers can create varied haptic experiences. This adds versatility to the motor’s use.

Long Durability

lra vibration motor long durability

These motors are designed for long-lasting performance. Most LRA motors can last up to 1 million cycles (approximately 833 hours) under typical usage conditions, providing longevity and reliability in devices.

FAQ For LRA Vibration Motots

1.What is LRA vibration Motor?

An LRA vibration motor, also called a linear resonant actuator, consists of a small mass connected to a spring. When activated, the spring generates a force that produces vibrations.

An ERM vibration motor uses an unbalanced mass on a DC motor, which generates vibrations as the motor spins. In contrast, an LRA vibration motor uses a voice coil to move the mass, with the springs being the only components at risk of wear or damage.

Benefits include a quick response time, making them ideal for applications needing fast vibrations. The vibration frequency remains stable, unaffected by fluctuations in battery voltage.

Drawbacks include their higher cost and the requirement for an external driver IC to generate the AC signal needed by the LRA. Additionally, for optimal performance, the AC signal should match the resonant frequency of the LRA.

✅Collaborate with Specialists

Our engineering team brings decades of motor technology expertise to every project.

✅Seamless Global Partnership

Communicating with us is a breeze.

We’ll adapt to your time zone, making sure that information and ideas are exchanged promptly.

Right from the start, you can rest assured that your thoughts are fully grasped.

✅Lifelong Technical Alliance

We’re not the type to just give you a solution and then disappear. We’ll be with you every step of the way during the project, and even after it’s done. You can count on us to always have your back.

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