A multi-unit cascading type high-voltage power amplifier for driving piezoelectric actuators
A multi-unit cascading type high-voltage power amplifier for driving piezoelectric actuators
- Author(s): Qiang Fu ; Xiangdong Liu ; Zhilin Lai
- DOI: 10.1049/cp.2012.0939
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- Author(s): Qiang Fu ; Xiangdong Liu ; Zhilin Lai Source: International Conference on Automatic Control and Artificial Intelligence (ACAI 2012), 2012 p. 138 – 141
- Conference: International Conference on Automatic Control and Artificial Intelligence (ACAI 2012)
- DOI: 10.1049/cp.2012.0939
- ISBN: 978-1-84919-537-9
- Location: Xiamen, China
- Conference date: 3-5 March 2012
- Format: PDF
In order to improve the dynamic characteristics, load capacity and bandwidth of the power amplifier which is used to driving piezoelectric actuators, a novel high-voltage power amplifier based on multi-unit floating cascade topology is developed by using multiple independent high-precision power amplifier units cascade. To improve the stability, an effective dual-channel feedback compensation strategy is developed. Experimental results show that the output voltage amplitude is 0-1000V, the maximum output power is 1KVA, the large signal bandwidth is over 1KHz/0.3uF, and the static ripple is 100mV. It can satisfy the system requirements of low ripple, high accuracy, large bandwidth, short response time and excellent load capacity.
Inspec keywords: piezoelectric actuators; cascade systems; feedback; compensation; power amplifiers; high-voltage techniques
Subjects: Amplifiers; Power convertors and power supplies to apparatus; Piezoelectric devices; Control gear and apparatus
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