Design of a self-oscillating class D power amplifier for piezoelectric actuators

A design of a delay based self-oscillating class-D power amplifier for piezoelectric actuators is presented and modelled. First order and second order configurations are discussed in detail and analytical results reveal the stability criteria of a second order system, which should be respected in the design. It also shows if the second order system converges, it will tend to give a correct pulse modulation regarding to the input modulation index. Experimental results show the effectiveness of this design procedure. For a piezoelectric load of 400 nF, powered by a 150 V 10 kHz sinusoidal signal, a total harmonic distortion (THD) of 4.3% is obtained.

[1]  Lucien J. Breems,et al.  Audio at low and high power , 2008, ESSCIRC 2008 - 34th European Solid-State Circuits Conference.

[2]  Kenji Uchino,et al.  Novel Piezoelectric-Based Power Supply for Driving Piezoelectric Actuators Designed for Active Vibration Damping Applications , 2001 .

[3]  H. Janocha,et al.  NEW APPROACH TO A SWITCHING AMPLIFIER FOR PIEZOELECTRIC ACTUATORS , 2000 .

[4]  Remy Cellier,et al.  A topological comparison of PWM and hysteresis controls in switching audio amplifiers , 2008, APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems.

[5]  Jaehoon Jeong,et al.  Phase-shift self-oscillating class-D audio amplifier with multiple-pole feedback filter , 2011, IEICE Electron. Express.

[6]  K. Agbossou,et al.  Class D amplifier for a power piezoelectric load , 2000, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[7]  G. Gnad,et al.  A power drive control for piezoelectric actuators , 2004, 2004 IEEE International Symposium on Industrial Electronics.

[8]  Ranjit Gharpurey,et al.  Design and Analysis of a Self-Oscillating Class D Audio Amplifier Employing a Hysteretic Comparator , 2011, IEEE Journal of Solid-State Circuits.

[9]  Jun Yu,et al.  A Second-Order Class-D Audio Amplifier , 2011, SIAM J. Appl. Math..

[10]  M.A.E. Andersen,et al.  Carrier Distortion in Hysteretic Self-Oscillating Class-D Audio Power Amplifiers: Analysis and Optimization , 2009, IEEE Transactions on Power Electronics.

[11]  Bruno Putzeys.  Simple Self-Oscillating Class D Amplifier with Full Output Filter Control , 2005 .

[12]  Douglas K. Lindner,et al.  Optimized Design of Switching Amplifiers for Piezoelectric Actuators , 2000 .

[13]  Bernhard Gottlieb,et al.  Efficient class-B analog amplifier for a piezoelectric actuator drive , 2009 .

[14]  Yaow-Ming Chen,et al.  Sigma-Delta Modulation Inverters for Piezoelectric Actuators , 2007, IECON 2007 - 33rd Annual Conference of the IEEE Industrial Electronics Society.

[15]  Chun Kit Lam,et al.  Class-D Amplifier Power Stage With PWM Feedback Loop , 2013, IEEE Transactions on Power Electronics.

[16]  S. Poulsen,et al.  Self oscillating PWM modulators, a topological comparision , 2004, Conference Record of the Twenty-Sixth International Power Modulator Symposium, 2004 and 2004 High-Voltage Workshop..

[17]  Meng Tong Tan,et al.  Time-Domain Analysis of Intermodulation Distortion of Closed-Loop Class-D Amplifiers , 2012, IEEE Transactions on Power Electronics.

[18]  Ephrahim Garcia,et al.  Efficient power amplifiers for piezoelectric applications , 1996 .