Design and DSP microprocessor implementation of digital sinusoidal tracking controllers

Chang, B.C.; Hu, Chunlong; Ilg, Mark

doi:10.1109/acc.2005.1470788

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…First of all, the controller needs to be implemented as a computer program on a DSP microprocessor. This requires a digital version of the proposed control algorithm, which can be done similarly as in [1]. Secondly, the canard is assumed to be driven by a DC motor, which may not survive the tremendous shock going through the gun barrel.…”

Section: Numerical Results and Computer Simulationmentioning

confidence: 99%

“…To faithfully alter the flight path of a spinning projectile, interferences such as body spin and body cone must be compensated for using feedback control systems. Methods of compensating for spinning of the projectile have been discussed in [1][2]. For the approach discussed in [2], the front-end of the projectile is actively stabilized to track a constant roll angle while the rear-body maintains spin for stability.…”

Section: Introductionmentioning

confidence: 99%

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Active coning compensation for control of spinning flying vehicles

Salman

Chang

2010

2010 IEEE International Conference on Control Applications

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Many gun launched projectiles spin to maintain in-flight dynamic stability. This spinning often induces the gyroscopic phenomenon known as precession, or coning. Coning poses a problem for actively controlling the projectile. A control scheme is proposed that can compensate for the coning angle of the projectile and allow front-mounted canards to efficiently change the projectile flight path without reaching a stall condition. Closed-loop regulation and H 2 control theories are employed to construct the controller.

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Section: Numerical Results and Computer Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active coning compensation for control of spinning flying vehicles

Salman

Chang

2010

2010 IEEE International Conference on Control Applications

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“…An embedded computer, a DSP microprocessor (Texas Instruments, 2001) with size less than 0.7 Â 0.7 Â 0.2, is used to process the sensor data and compute the Euler angles. These components are smaller, lighter, cheaper and consume less power than traditional inertial measurement units (IMUs), and hence are suitable for smaller flying vehicles like UAVs and flying munitions (Chang et al, 2005;Jagadish and Chang, 2007).…”

Section: Introductionmentioning

confidence: 99%

Fault-tolerant attitude computation for unmanned aerial vehicles

Jagadish

Chang

2010

Transactions of the Institute of Measurement and Control

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Attitude information is essential in the control of unmanned aerial vehicles (UAVs). One way of defining attitude is through Euler angles. These angles can be determined based on the measurements of the projections of the gravity and earth magnetic fields on the three body axes of the vehicle. Twenty-five methods have been developed to compute the Euler angles and each of these methods employ a subset of the six measurements. The capability of computing the Euler angles in multiple ways provides a diversified redundancy required for fault tolerance. The proposed approach can identify the sensor failures and even separate the reference fields from the disturbances. A bank-to-turn manoeuvre of the NASA GTM UAV is used to show how to determine the correct Euler angles despite interferences by inertial acceleration.

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“…The microprocessor has embedded real-time operation systems (RTOS), which are designed to give priority to real time tasks. The design will be based on worst-case scenario and considers all possible interrupts [9][10][11][12][13] . The IGBTs are rated at 1200V and capable of carrying 1000 Amps with switching frequency of 15 kHz.…”

Section: Igbt Gate Signal Generations Using the Dsp Microprocessormentioning

confidence: 99%