Class-D amplifier design and performance for driving a piezo actuator drive servomotor

Zsurzsan, Gabriel; Zhang, Zhe; Andersen, Michael M.A.; Andersen, Nils Axel

doi:10.1109/icit.2016.7474902

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…The proposed topology is suitable for low‐power (typically low‐voltage) applications, whereefficiency is not a major concern, but high‐definition voltage waves are required,such as high‐definition audio systems [17,18]. Also, it may be applied topiezoelectric actuator drive motors, where applying sinusoidal voltages to theactuators (typically phase‐shifted in 90°) will produce circular trajectories of thespace vectors [19]. Additionally, it isimportant to consider that low output frequencies (<30 Hz) reduce overall stresson the new topology, making it also suitable for low‐frequency applications [20, 21].…”

Section: Discussionmentioning

confidence: 99%

New dual H‐bridge converter for continuous space vector modulation

Durán

Neira

Pereda

et al. 2019

IET Power Electronics

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Multilevel converters are a significant improvement in the DC-AC conversion technology, reaching higher power quality in medium-voltage applications and using standard semiconductors in a smarter way than conventional converters, without necessarily increasing the cost. However, multilevel technology remains discrete and its only way to reduce the overall total harmonic distortion leads on the generation of several discrete levels on the output voltage. Therefore, it is not possible to reduce the harmonic distortion to negligible values, unless a big number of semiconductors are used, which is not cost-effective for low-voltage applications, limiting the reliability of the system. This study proposes a new dual H-bridge inverter that generates a three-phase output voltage with negligible distortion using two variable DC-DC power sources and a new continuous space vector modulation. Simulation and experimental results show high-quality output voltages. The topology is simple and uses only 12 semiconductors, but it requires special attention in the variable DC voltage converters, which can limit the maximum output frequency. Therefore, the solution is suitable for low power applications that require high power quality using small filters or none filters at the AC side. The results were obtained and validated using an experimental laboratory prototype under different operating conditions.

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Section: Discussionmentioning

confidence: 99%

New dual H‐bridge converter for continuous space vector modulation

Durán

Neira

Pereda

et al. 2019

IET Power Electronics

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show abstract

“…The majority of the existing topologies focus on efficient piezoelectric driving for large-scale and high-power applications, which reduces the efficiency and power density of the power supply. [12][13][14][15][16][17] Harvard's team has previously produced a small-scale power conversion interface. However, as described in the study by Karpelson et al, 18 the boost tapped-inductors they use have difficulty in manufacturing compared to general flyback transformers.…”

Section: Introductionmentioning

confidence: 99%

A dual-stage low-power converter driving for piezoelectric actuator applied in micro robot

Gong

et al. 2019

International Journal of Advanced Robotic Systems

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In this article, a dual-stage converter driving for a piezoelectric actuator based on flyback circuit was designed and implemented, which could be applied in a micro robot. A low-voltage direct current could be converted to a high-voltage alternating current through flyback circuit and direct current/alternating current circuit in low-power condition. In the direct current/direct current stage, the charging and discharging process was realized to generate a high voltage bias from a low voltage directly supplied by battery. Then, the high voltage was converted into alternating waveform by an energy recovery circuit in direct current/alternating current stage. Experiments were conducted to verify the ability of the proposed converter to drive a 100-V-input piezoelectric bimorph actuator using a prototype 108 mg (excluding printed circuit board mass), 169 (13 Â 13) mm 2 , and 500-mW converter. According to the experimental results, this converter could be used for driving piezoelectric actuator applied in micro robot.

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“…The majority of existing topologies focus on efficient piezoelectric driving for large-scale and high-power applications, which reduces the efficiency and power density of the power supply. 3,[11][12][13][14][15] Harvard's team has previously produced a small-scale power conversion interface. However, as described by Karpelson et al, 16 the boost tapped-inductors they use have difficulty in manufacturing compared to general flyback transformers.…”

Section: Introductionmentioning

confidence: 99%

A dual-stage low-power converter driving for piezoelectric actuator applied in flapping-wing micro aerial vehicles

Kong

2019

International Journal of Advanced Robotic Systems

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It is essential for flapping-wing micro aerial vehicles to have a driver with compact size, low mass, and high conversion efficiency in low-power application. In this article, a dual-stage low-power converter driving for piezoelectric actuator was designed and implemented, which can be applied in flapping-wing micro aerial vehicles. Using the "simultaneous drive" method, an Residual Current Devices (RCD) passive snubber flyback DC/DC step-up converter cascaded with a bidirectional active half-bridge drive stage is designed. The flyback converter is controlled by pulse width modulation in discontinuous conduction mode to ensure the stability of the output high voltage. The half-bridge drive stage takes the approach of comparing the output voltage signal with an ideal waveform lookup table to generate arbitrary unipolar signals. The proposed converter has a weight of 345 mg, a size of 285 mm 2 (19 Â 15 mm 2 ), a maximum output power of 500 mW, and a maximum conversion efficiency of 64.5%. An experiment driving for piezoelectric actuator was performed to observe the displacement generated by the converter. According to the experimental results, this converter can be applied in flapping-wing micro aerial vehicles.

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Class-D amplifier design and performance for driving a piezo actuator drive servomotor

Cited by 7 publications

References 10 publications

New dual H‐bridge converter for continuous space vector modulation

New dual H‐bridge converter for continuous space vector modulation

A dual-stage low-power converter driving for piezoelectric actuator applied in micro robot

A dual-stage low-power converter driving for piezoelectric actuator applied in flapping-wing micro aerial vehicles

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