The Control Design and Realization of Phone Vibrators
Abstract: Now almost every device has the ability to produce vibration alerts and the field of haptic feedback is rapidly moving forward. The mobile phone industry is a huge market, in which vibration are an established component. In this study we outline some of the common problems cell phone manufacturers face and the electrical best practices to overcome them. In the second chapter, we introduce the basic structure and working principle of both ERM and LRA, and then in the third chapter, we design driving circuit and create PWM control signal for both ERM and LRA. And we can control the working voltage of vibrator and output amplitude by changing the duty circuit of PWM signal. In the fourth chapter, we discuss several installation methods for vibrators and introduce several widely used ways of securing vibration motor leads and wires. In the final conclusion, we list some deficiencies in this study, which need for further research and improvement. We hope through our study, you will have a clear understanding for the working principle and control of vibrators.
Key words: Eccentric Rotating Mass vibration motor Linear Resonant Actuators
Pulse Width Modulation