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Application of voice coil motor in the test of mobile phone touch screen. The sensitivity of the touch screen has a direct impact on the user's sense of use and experience, so the voice coil motor is used to test the touch screen before it is ready for production.
The "soft landing" feature of the voice coil motor is used in the touch screen test, as it is quite helpful for the assembly of delicate or high-value parts. So how does the voice coil motor achieve a soft landing? Control the lower force near the surface in speed mode while continuously monitoring the position error. Once it reaches the surface, the position error increases to a pre-set value and the execution axis remains at that point on the surface. The advantage of "soft landing" is that it can touch the surface according to the position of the object surface, overshoot and miss due to the error of the surface position, take too long time, affect the production efficiency, guarantee the speed and ensure the precision.
Kunshan has been working in the field of voice coil motors for more than 10 years, and has been used in testing, experiments, including touch screen testing, by Huawei, apple, Samsung and other smartphone manufacturers.
The article was originally written by www.tmmotion.com of Tongmao Electronics Co. , Ltd. in Kunshan, China.
