A high-voltage, high-frequency linear amplifier/driver for capacitive loads

Reynolds, S.

doi:10.1088/0957-0233/3/3/005

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…The design of the amplifier is similar to that described in Ref. [28], modified to accommodate higher breakdown voltage MOSFETs (Ixys Corp., IXTY01N100), and to incorporate a triggered spark-gap as a switch. The upper limit in translational velocity of the lattice is determined by the slew rate of the amplifier, in turn determined by the total load and output capacitance, and available output current.…”

Section: B Modulator Electronicsmentioning

confidence: 99%

Optical lattices for atom-based quantum microscopy

Klinger

Degenkolb

Gemelke

et al. 2010

Review of Scientific Instruments

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We describe new techniques in the construction of optical lattices to realize a coherent atom-based microscope, comprised of two atomic species used as target and probe atoms, each in an independently controlled optical lattice. Precise and dynamic translation of the lattices allows atoms to be brought into spatial overlap to induce atomic interactions. For this purpose, we have fabricated two highly stable, hexagonal optical lattices, with widely separated wavelengths but identical lattice constants using diffractive optics. The relative translational stability of 12 nm permits controlled interactions and even entanglement operations with high fidelity. Translation of the lattices is realized through a monolithic electro-optic modulator array, capable of moving the lattice smoothly over one lattice site in 11 micros, or rapidly on the order of 100 ns.

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Section: B Modulator Electronicsmentioning

confidence: 99%

Optical lattices for atom-based quantum microscopy

Klinger

Degenkolb

Gemelke

et al. 2010

Review of Scientific Instruments

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“…15 and the derivative of Eq. 11, the transfer functions from an applied disturbance to the voltage and current are found to be (16) (k2 (p) =2caJ (17) 'd(P) k2 p2+2p+1 where p is the nondimensional Laplace variable. It is instructive to compare the current and power responses of the actuator element to those of a similarly sized capacitor.…”

Section: Frequency and Time Response To Sinusoidal Excitationmentioning

confidence: 99%

<title>Power flow and amplifier design for piezoelectric actuators in intelligent structures</title>

Warkentin

Crawley

1994

SPIE Proceedings

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In developing intelligent structures in which actuation, sensing, and processing elements are physically integrated within the structure, the use of piezoelectric actuators places certain requirements on the electronic components which drive them.Applications may impose strict limitations on power consumption and heat dissipation, and structural integration brings an added requirement for component miniaturization. An understanding of the power flow behavior of piezoelectric actuators in controlled structure applications is therefore important. This paper addresses power issues in the application of piezoelectric actuators and embedded electronic components. The power flow characteristics of piezoelectric actuators are examined in closed-loop control applications. An analysis is presented of the power flow and voltage and current requirements of a piezoelectric actuator in a simple system, along with implications for the design of linear amplifiers. The contributions of various elements to average and peak power flow levels are identified, as is the effect of loop closure on the impedance which the actuator presents to the amplifier.1 . INTRODUCTION Piezoelectric materials, characterized by their ability to deform under the application of an electric field, have found numerous applications in the field of structural l ,2,3,4,5 Much work has been performed in characterizing piezoelectric elements, developing sensors and controllers, and addressing the requirements for embedding piezoelectric elements and electronic processing components. Practical issues of power conversion and amplification, however, have until recently been largely neglected. The modelling of such piezoelectric actuators for dynamic control of structures is well established; Ref. 6 presents a general formulation of the use of a variational principle to derive equations of motion relating actuator voltages and charges to structural displacements and disturbance forces. As power duals, the voltage and current determine the flow of power between the electronic control system and the actuator/structure combination. Ref. 7 uses impedance modelling to compute various components of both the electrical and mechanical power flow and dissipation for a structure actuated in an open loop condition; the derivation of the various impedances, however, is not always straightforward.The objective of the present work is examine power issues by applying the modelling techniques of Ref. 6 to a simple dynamic system: a cantilever beam modelled with a single mode. Although the flow of mechanical energy between actuator and structure is not explicit as in Ref. 7, the use of energy principles allows the derivation of electromechanical models based on Rayleigh-Ritz or finite element methods, which are readily extended to problems of complex geometry and large numbers of modes, sensors, and actuators. The simplicity of the single-mode Rayleigh-Ritz model presented here allows the derivation of interesting relations and parameter groupings which may shed further light on ...

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“…Series of amplifier-type actuators, which typically use Class A, Class B, and Class A-B operational amplifiers to drive piezoelectric actuators, have been developed by Texas Instruments [5] and Maxim Integrated [6]. Operational amplifiers were in a dominant position during the early development stage of piezoelectric actuator drivers because of their simplicity [7][8][9]. Wireless optical power-transfer technology, based on operational amplifiers, was proposed to overcome the limitations in conventional wired electrical connections, to improve the flexibility and mobility of actuators for micro-robots [10].…”

Section: Introductionmentioning

confidence: 99%

A 3-to-5 V Input, 80 Peak-to-Peak Voltage (Vpp) Output, 2.75% Total Harmonic Distortion Plus Noise (THD+N), 2.9 μF Load Piezoelectric Actuator Driver with Four-Switch Buck–Boost

Ye,

Chen,

Dong

et al. 2023

Actuators

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As human–computer interaction has become increasingly popular, haptic technology has become a research topic of great interest, since vibration perception, as a type of haptic feedback, can enhance user experience during an interaction. However, the high power consumption of existing drivers makes them unsuitable for use in portable devices. In this paper, a bidirectional four-switch buck–boost converter (FSBBC) and Proportional–Integral (PI)–Proportional (P) feedback control are proposed to implement a driver in a high-capacitance piezoelectric actuator which is capable of recovering the energy stored in the high-capacitance load and increasing efficiency. The FSBBC offers an extended input voltage range, rendering significant technological advantages in diverse applications such as automobiles, laptops, and smartphones. By implementing specific control strategies, the FSBBC not only outperforms conventional buck–boost converters in boosting performance, but also ensures that the output and input voltages retain the same polarity. This effectively addresses the polarity inversion challenge inherent to traditional buck–boost circuits. Within the FSBBC, the significant reduction in voltage stress endured by the MOSFET effectively minimizes system costs and size and enhances reliability. The proposed system was simulated in Simulink, which was combined with testing on a field-programmable gate array (FPGA). The driver is capable of driving capacitors of up to 2.9 μF, with 80 Vpp output and 2.75% total harmonic distortion (THD) observed in the test.

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A high-voltage, high-frequency linear amplifier/driver for capacitive loads

Cited by 5 publications

References 3 publications

Optical lattices for atom-based quantum microscopy

Optical lattices for atom-based quantum microscopy

<title>Power flow and amplifier design for piezoelectric actuators in intelligent structures</title>

A 3-to-5 V Input, 80 Peak-to-Peak Voltage (Vpp) Output, 2.75% Total Harmonic Distortion Plus Noise (THD+N), 2.9 μF Load Piezoelectric Actuator Driver with Four-Switch Buck–Boost

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