Design and performance of a dual drive system for tip-tilt angular control of a 300mm diameter mirror

Woody, Shane C.; Smith, Stuart T.

doi:10.1016/j.mechatronics.2006.03.006

Cited by 38 publications

(26 citation statements)

References 12 publications

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“…The aim of the fast steering mechanism (FSM) is to combine the closed loop capability of a long range platform while maintaining high bandwidth response of a short range actuator 4,5,6 . This design approach uses two piezoelectrically actuated motion-control platforms integrated in series 7 , Figure 2 to Figure 4. The complete mechanical device shown in Figure 2 represents a three-tier system with the following sections; 2 American Institute of Aeronautics and Astronautics • Top high bandwidth (HBW) Platform: mirror actuation platform with real-time dynamic response • CentralPlatform: long range (LR) motion control platform • Lower Platform (RF): lower platform attenuates reaction forces generated by LR and HBW platforms First, the LR platform is mounted on top of three long PMN-PT stacked actuators.…”

Section: Dual Platform Methodology (Coarse and Fine Actuation Plamentioning

confidence: 99%

Steering Mirror Design and Dynamic Controls for a Dual-actuation Platform Using High-strain Actuators

Woody

Smith

2005

46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

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This manuscript discusses several novel design approaches to enhance dynamic precision of electro-mechanical positioning systems. In particular, a detailed development program for fast steering mirrors is addressed and various unique metrology and motion control strategies are presented. In general, material developments are continually advancing lightweight mirror structures such as the implementation of silicon carbide (SIC) materials to provide higher mechanical bandwidth response. Additionally, electro-mechanical actuators must continue to advance in conjunction with the mirror technologies in order meet stringent performance specifications (i.e. power requirements, weight, and precision dynamic response). The technologies developed through this development effort include; ultra-high strain piezoelectric actuators for enhanced motion control performance, a novel mechanism design employing a dual actuation platform to provide high bandwidth response and long-range, high-precision capability, innovative controller methodologies for the series coarse/fine system and active attenuation of dynamic reaction forces, integration of energy absorbing foams to enhance dynamic control, and real-time precision digital controllers.

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Section: Dual Platform Methodology (Coarse and Fine Actuation Plamentioning

confidence: 99%

Steering Mirror Design and Dynamic Controls for a Dual-actuation Platform Using High-strain Actuators

Woody

Smith

2005

46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

Self Cite

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“…The performances of an FSM, such as bandwidth and optical scanning range, are influenced by its actuator greatly. Mostly, FSMs are driven by voice coil actuators [1][2][3][4] or piezoelectric actuators [5,6]. Voice coil actuator utilizes Lorentz force to generate actuation and allows long actuation stroke with low input power requirement.…”

Section: Introductionmentioning

confidence: 99%

Design of a Rotary Electromagnetic Actuator with Linear Torque Output for Fast Steering Mirror

Long¹,

Mo²,

Chen³

et al. 2015

Journal of Magnetics

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This paper focuses on the design of a flux-biased rotary electromagnetic actuator with compact structure for fast steering mirror (FSM). The actuator has high force density and its torque output shows linear dependence on both excitation current and rotation angle. Benefiting from a new electromagnetic topology, no additional axial force is generated and an armature with small moment of inertia is achieved. To improve modeling accuracy, the actuator is modeled with flux leakage taken into account. In order to achieve an FSM with good performance, a design methodology is presented. The methodology aims to achieve a balance between torque output, torque density and required coil magnetomotive force. By using the design methodology, the actuator which will be used to drive our FSM is achieved. The finite element simulation results validate the design results, along with the concept design, magnetic analysis and torque output model.

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“…Generally, FSMs are driven by voice coil actuators [1][2][3][4][5] or piezoelectric actuators [6][7][8][9][10]. Voice coil actuator is based on Lorentz force and allows long actuation stroke with little power input.…”

Section: Introductionmentioning

confidence: 99%

Design of a Moving-magnet Electromagnetic Actuator for Fast Steering Mirror through Finite Element Simulation Method

Long¹,

Mo²,

Wei³

et al. 2014

Journal of Magnetics

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This paper develops a moving-magnet electromagnetic actuator for fast steering mirror (FSM). The actuator achieves a reasonable compromise between voice coil actuator and piezoelectric actuator. The stroke of the actuator is between the strokes of a piezoelectric actuator and a voice coil actuator, and its force output is a linear function of air gap and excitation current within our FSM travel range. Additionally, the actuator is more reliable than voice coil actuator as the electrical connection in the actuator is static. Analytically modeling the actuator is difficult and time-consuming. Alternatively, numerous finite element simulations are carried out for the actuator analysis and design. According to the design results, a real prototype of the actuator is fabricated. An experimental test system is then built. Using the test system, the force output of the fabricated actuator is evaluated. The test results validate the actuator analysis and design.

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Design and performance of a dual drive system for tip-tilt angular control of a 300mm diameter mirror

Cited by 38 publications

References 12 publications

Steering Mirror Design and Dynamic Controls for a Dual-actuation Platform Using High-strain Actuators

Steering Mirror Design and Dynamic Controls for a Dual-actuation Platform Using High-strain Actuators

Design of a Rotary Electromagnetic Actuator with Linear Torque Output for Fast Steering Mirror

Design of a Moving-magnet Electromagnetic Actuator for Fast Steering Mirror through Finite Element Simulation Method

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