Modeling, Simulation, and Controller Design for an Air-breathing Combustion System

Bharani, P.; kumar, C.Selva; Gupta, Nitin Kumar; Ananthkrishnan, N.; Gull, Hyun

doi:10.2514/1.42368

Cited by 25 publications

(16 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(15) and the one feasible solution from the quadratic equation can be used as the equivalence ratio command. Here, the fuel supply actuation by this command is assumed to be the 1 st order dynamics, with a cutoff frequency of approximately 0.8 Hz [13], which is equivalent to a time constant of 0.2 sec, and it is realized by a transfer function.…”

Section: (16)mentioning

confidence: 99%

Nonlinear Adaptive Velocity Controller Design for an Air-breathing Supersonic Engine

Park

Park²,

Tahk

2012

International Journal of Aeronautical and Space Sciences

View full text Add to dashboard Cite

This paper presents an approach on the design of a nonlinear controller to track a reference velocity for an air-breathing supersonic vehicle. The nonlinear control scheme involves an adaptation of propulsive and aerodynamic characteristics in the equations of motion. In this paper, the coefficients of given thrust and drag functions are estimated and they are used to approximate the equations of motion under varying flight conditions. The form of the function of propulsive thrust is extracted from a thrust database which is given by preliminary engine input/output performance analysis. The aerodynamic drag is approximated as a function of angle of attack and fin deflection. The nonlinear controller, designed by using the approximated nonlinear control model equations, provides engine fuel supply command to follow the desired velocity varying with time. On the other hand, the stabilization of altitude, separated from the velocity control scheme, is done by a classical altitude hold autopilot design. Finally, several simulations are performed in order to demonstrate the relevance of the controller design regarding the vehicle.

show abstract

Section: (16)mentioning

confidence: 99%

Nonlinear Adaptive Velocity Controller Design for an Air-breathing Supersonic Engine

Park

Park²,

Tahk

2012

International Journal of Aeronautical and Space Sciences

View full text Add to dashboard Cite

show abstract

“…A change in the nozzle throat area takes a small but finite time to influence the combustor pressure, as modeled by the B parameter in [14,15]. Then the upstream propagating pressure wave from the combustor affects the intake shock position, which then generates a new total pressure at node 3 behind the terminal shock.…”

Section: Terminal Shock Dynamic Modelmentioning

confidence: 99%

“…A model that couples the intake with the combustor and exhaust nozzle for a ramjet was first realized recently by our coworkers [14], and it was used [15] to derive a control law for the intake shock location using the nozzle throat area as input. A significant feature of the model in [14] was the use of time lags to capture the physics of upstream and downstream propagating waves between the intake and combustor.…”

Section: Introductionmentioning

confidence: 99%

“…Second, despite the relatively low order of the global model in [14], the model for each component was multiparameter and nonlinear, in order to capture the various physical phenomena in the intake and combustor. Thus, in deriving the control law in [15], local linearized reduced-order models at several operating points had to be obtained using a system identification tool. The system identification is, unfortunately, a mathematical procedure that results in a set of states that cannot be easily related to the physical variables, thus masking the physical relationships inherent in the system.…”

Section: Introductionmentioning

confidence: 99%

“…The system identification is, unfortunately, a mathematical procedure that results in a set of states that cannot be easily related to the physical variables, thus masking the physical relationships inherent in the system. Control of the terminal shock position was obtained indirectly in [15] by defining a related parameter called intake backpressure margin.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Control-Oriented Model for Intake Shock Position Dynamics in Ramjet Engine

Park

Kim²,

Yeom³

et al. 2011

Journal of Propulsion and Power

View full text Add to dashboard Cite

Robust control design of an air‐breathing engine for a supersonic vehicle using backstepping and UKF

Maity

Padhi

2017

Asian Journal of Control

View full text Add to dashboard Cite

This paper presents an efficient robust control design approach for an air‐breathing engine for a supersonic vehicle using the Lyapunov stability theory based nonlinear backstepping control, augmented with unscented Kalman filter (UKF). The primary objective of the control design is to ensure that the thrust produced by the engine tracks the commanded thrust by regulating the fuel flow to the combustion chamber. Moreover, as the engine operates in a supersonic range, an important secondary objective is to manage the shock wave location in the intake for maximum pressure recovery with adequate safety margin by varying the throat area of the nozzle simultaneously. To estimate the states and parameters as well as to filter out the process and sensor noises, a UKF has been incorporated for robust output feedback control computation. Furthermore, independent control designs for the actuators have been carried out to assure satisfactory performance of the engine. Additionally, a guidance loop is designed to generate a typical flight trajectory of the representative vehicle using a nonlinear suboptimal input constrained model predictive static programming formulation for testing the performance of the engine. Simulation results clearly indicate quite successful robust performance of the engine during both climb and cruise phases.

show abstract

Modeling, Simulation, and Controller Design for an Air-breathing Combustion System

Cited by 25 publications

References 20 publications

Nonlinear Adaptive Velocity Controller Design for an Air-breathing Supersonic Engine

Nonlinear Adaptive Velocity Controller Design for an Air-breathing Supersonic Engine

Control-Oriented Model for Intake Shock Position Dynamics in Ramjet Engine

Robust control design of an air‐breathing engine for a supersonic vehicle using backstepping and UKF

Contact Info

Product

Resources

About