Stabilized electro-optical airborne instrumentation platform (SEAIP)

Ricks, Timothy P.; Burton, Megan M.; Cruger, William; Reynolds, R.

doi:10.1117/12.519168

Cited by 6 publications

(3 citation statements)

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“…During the inspection, the vibration sensor data and the data of the pod gyro are recorded by the vibration tester and the pod controller, respectively. [10][11][12] The vibration characteristic of the system and the stabilization precision of the pod are obtained after treatment. Figure 7 shows the scene of the pod inspection.…”

Section: Vibration and Stabilization Precision Testmentioning

confidence: 99%

Passive damping and vibration test of airborne stable pods for power line inspection using helicopters

Cao

Zhang

et al. 2020

Measurement and Control

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An airborne optoelectronic stable pod is mounted on a helicopter by pylons. The pod suppresses the impact of strong vibration and large swaying of the aircraft to stabilize the optical axis of the camera and to produce high-definition images under dynamic conditions. First, a passive damping system comprising a mechanical turntable with two axes and four frames for a photoelectronic stable pod is designed. Then the pod’s vibration reduction performance is tested. Additional tests are performed on the vibration of the helicopter and the pylon under flight conditions during the actual power line inspection, test the stabilization precision and imaging effect of the pod under flight conditions. The test results are analysed in detail, and the pod’s stability performances are verified under airborne conditions. The stability precision of the pod is better than 30 μrad (1σ), and a pin of 3-mm diameter can be clearly shot during aircraft hovering. The vibration test shows the pylons do not amplify the vibration of the aircraft while meeting stiffness requirement.

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Section: Vibration and Stabilization Precision Testmentioning

confidence: 99%

Passive damping and vibration test of airborne stable pods for power line inspection using helicopters

Cao

Zhang

et al. 2020

Measurement and Control

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“…Gyro-stabilized platform is becoming more and more important in the modern applications of image stabilizations, tracking control of photoelectric imaging systems for motion carriers, and so on (Kennedy and Kennedy, 2003; Ricks et al, 2004). The traditional gyro-stabilized platform is normally controlled by electromagnetic motors (EMMs).…”

Section: Introductionmentioning

confidence: 99%

Modeling and control of a 2-degree-of-freedom gyro-stabilized platform driven by ultrasonic motors

Song

Zhang

et al. 2018

Journal of Intelligent Material Systems and Structures

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This article specially designed and demonstrated a new ultrasonic motor and its control system based on the dynamic model of the 2-degree-of-freedom gyro-stabilized platform. The factors such as mechanical resonance, torque and moment inertia coupling, and nonlinearity of the driver were also taken into account during the optimization of the robust proportional–integral–differential control system. Finally, the controller was implemented by an ultrasonic motor and an embedded microcontroller. Experimental results showed that, comparing with the traditional electromagnetic motor controller, the proposed ultrasonic motor controller had the better control performances in dynamic response, static accuracy, isolation, and so on. A practical prototype of the gyro-stabilized platform with stronger robustness was also developed at the same time.

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“…A photograph of the SEAIP mounted on the aircraft is shown below in Figure 1. 1 SEAIP gimbal stabilization is 35 µradian RMS line-of-sight (LOS). This may vary between different sensor configurations, with higher mass/inertia sensor configurations resulting in a higher degree of stabilization.…”

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confidence: 99%

Real-time sensor mapping display for airborne imaging sensor test with the Adaptive InfraRed Imaging Spectroradiometer (AIRIS)

Burton

Cruger

Gittins

et al. 2005

Chemical and Biological Standoff Detection III

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Captive flight testing (CFT) of sensors and seekers requires accurate data collection and display for sensor performance evaluation. The U.S. Army Redstone Technical Test Center (RTTC), in support of the U.S. Army Edgewood Chemical Biological Center (ECBC), has developed a data collection suite to facilitate airborne test of hyperspectral chemical/biological sensors. The data collection suite combines global positioning system (GPS) tracking, inertial measurement unit (IMU) data, accurate timing streams, and other test scenario information. This data collection suite also contains an advanced real-time display of aircraft and sensor field-of-view information. The latest evolution of this system has been used in support of the Adaptive InfraRed Imaging Spectroradiometer (AIRIS), currently under development by Physical Sciences Incorporated for ECBC. For this test, images from the AIRIS sensor were overlaid on a digitized background of the test area, with latencies of 1 second or less. Detects of surrogate chemicals were displayed and geo-referenced. Video overlay was accurate and reliable. This software suite offers great versatility in the display of imaging sensor data; support of future tests with the AIRIS sensor are planned as the system evolves.

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Stabilized electro-optical airborne instrumentation platform (SEAIP)

Cited by 6 publications

References 0 publications

Passive damping and vibration test of airborne stable pods for power line inspection using helicopters

Passive damping and vibration test of airborne stable pods for power line inspection using helicopters

Modeling and control of a 2-degree-of-freedom gyro-stabilized platform driven by ultrasonic motors

Real-time sensor mapping display for airborne imaging sensor test with the Adaptive InfraRed Imaging Spectroradiometer (AIRIS)

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