The TDK Group introduces groundbreaking piezo actuators with haptic feedback and integrated sensor capabilities, known as PowerHapâ„¢ technology. These innovative components deliver exceptional performance in acceleration, force, and response time, offering a new level of tactile feedback quality. By combining the sensitivity of various human touch receptors, these compact and powerful actuators significantly enhance the human-computer interaction (HMI) experience.
The new tactile feedback actuator is built using a multilayer piezoelectric plate with a cost-effective copper inner electrode. This advanced design allows the actuator to operate at a relatively low voltage of ≤120V. When activated, the piezoelectric plate expands slightly along the z-axis while contracting along the x and y axes due to the piezoelectric effect. To amplify this movement, cymbal-shaped structures on both sides of the platen increase the displacement by a factor of 15 along the z-axis.
Currently, two versions are available: a 5N model with displacements up to 100μm and a 20N model with displacements of 200μm or more. The compact designs measure 12.7mm x 12.7mm x 1.6mm and 26mm x 26mm x 2.4mm respectively, making them ideal for space-constrained applications.
Compared to traditional electromagnetic actuators like ERM (Eccentric Rotating Motor) and LRA (Linear Resonant Actuator), piezoelectric actuators with haptic feedback offer superior acceleration, maximum force, minimal insertion height, and the fastest response time. They are fully integrated, self-contained components that also include sensing functionality. The 5N model achieves an acceleration of 5.0g with a rise time of just 2ms, while the 20N version reaches 15.0g in only 1ms.
Unlike conventional actuators, these piezoelectric elements can generate stimuli across a wide frequency range—1 Hz to 1000 Hz. This makes them highly versatile for custom haptic feedback tailored to major human mechanoreceptors. As a result, designers can create high-definition haptic profiles that provide users with realistic and immersive feedback in next-generation HMI systems.
These actuators are widely used in vehicles, smartphones, tablets, home appliances, ATMs, vending machines, game controllers, industrial equipment, and therapeutic devices. Their versatility, performance, and compact size make them a valuable addition to a wide range of applications.
Key features include:
- High force output: 5N and 20N
- Large displacement: up to 100μm and 200μm
- Very low profile: 1.6mm and 2.4mm thickness
- Fast response time and high acceleration
- Wide frequency range for customizable haptic effects
Whether it's for consumer electronics, automotive systems, or medical devices, these piezoelectric actuators represent a significant advancement in haptic technology. With their ability to deliver precise, powerful, and responsive tactile feedback, they open up new possibilities for user interaction and experience.
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Shanghai Janetec Electric Co., Ltd. , https://www.janetecelectric.com