The research on infrared seeker with disturbance rejection effect parasitic

Du, Xiao; Lv, Rui; Tu, Haifeng; Jiang, Chunwang

doi:10.1016/j.ijleo.2018.05.107

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…Next, by using Lemma 4, in which there is a positive number μ, this makes the solution of the system (15) satisfy jwðτÞj ≤ μðw 0 ε 2 Þ σ in finite time. Finally, according to equation (14), it can be observed that the estimation errors are able to meet je i j ≤ kw ðτÞkε −i+1 = Lε 3σ-i+1 , where L = μw σ 0 , thus completing the stability proof.…”

Section: International Journal Of Aerospace Engineeringmentioning

confidence: 63%

“…This kind of structure not only reduces the size and mass of the seeker but also improves the aerodynamic performance of the missile body. The roll-pitch infrared seeker has the characteristics of infrared imaging guidance, strapdown guidance, large field of view, and miniaturization so that it is very suitable for short-range combat air-to-air missiles [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…The values of these parameters have an impact 14 International Journal of Aerospace Engineering on the performance of the seeker. Referring to References [14,15,20,22], we can set suitable values for these parameters. The specific meaning of parameters and the assignment of parameters in the simulation process are shown in Table 2.…”

mentioning

confidence: 99%

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A New Compensation Method for DRR of a Roll-Pitch Seeker Based on ESO

Wei

Liu

et al. 2021

International Journal of Aerospace Engineering

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We propose a new DRR (Disturbance Rejection Rate) compensation method of a roll-pitch seeker based on ESO (extended state observer). The characteristics of a roll-pitch seeker and the DRR definition of two frames of a roll-pitch seeker are analyzed. The influence of different interference torques and different frequency bandwidths on the compensation effect is analyzed. Modeling and simulation of the guidance system of a roll-pitch seeker with the parasitic loop of DRR are carried out. Influence of the new DRR compensation method on dimensionless miss distance is analyzed. Mathematical simulation is established to compare the new ESO-based DRR compensation method with the existing methods such as the feedforward method and Kalman filter method. The analysis and simulation results show that the new ESO-based DRR compensation method has the advantages of high precision, good applicability, and easy adjustment, and the new method can effectively reduce the dimensionless miss distance with different types of input errors. The research of this proposed new method can provide a reference for the latest generation air-to-air missile operations in a high-altitude and high-speed environment and the high-precision research of a roll-pitch seeker.

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Section: International Journal Of Aerospace Engineeringmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

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A New Compensation Method for DRR of a Roll-Pitch Seeker Based on ESO

Wei

Liu

et al. 2021

International Journal of Aerospace Engineering

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“…The existing studies on the DRR and parasitic loop of the seeker mainly focus on theoretical analysis from the aspects of amplitude, frequency, and the influence of parasitic loop parameters of the DRR on the stability of guidance system [20]. Du et al [21] analyzed the influence of the DRR on the accuracy of the guidance system by simulation and gave a quantitative conclusion. As for how to reduce the influence of the seeker isolation parasitic loop, most of the current mainstream methods include adaptive control [22], the extended state observer [23][24][25][26], angular rate gyro feedforward compensation [27] and the Kalman filter [28] to achieve disturbance identification compensation.…”

Section: Introductionmentioning

confidence: 99%

Research on the Influence of the Disturbance Rejection Rate of a Roll–Pitch Seeker on Stable Tracking Characteristics

Xiao,

Lu,

et al. 2023

Aerospace

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The disturbance rejection rate (DRR) is an inherent problem of the seeker. The additional line-of-sight (LOS) angular velocity information of the seeker caused by the DRR will affect the attitude of the aircraft through the guidance system, thus forming a parasitic loop in the guidance and control system of the aircraft, which has a great influence on the guidance accuracy. In this study, the influence of the DRR of the roll–pitch seeker on the stable tracking of a maneuvering target is explored. First, the tracking principle of the roll–pitch seeker is analyzed and the conditions for completely isolating the disturbance of the aircraft attitude are deduced. Then, the expression of the frame error angle is derived, a semi-strap-down stable control closed-loop scheme is established, and the DRR transfer function is derived by adding different disturbance torque models. Finally, the simulation of stability tracking characteristics is carried out. The results show that when the aircraft attitude is disturbed at a low frequency or the target is maneuvering at a low frequency, the DRR caused by the spring torque has a great influence on the tracking angle of the two frames, the line of-sight rate accuracy of the optical axis output and the detector error angle. On the contrary, the damping torque DRR plays a leading role in tracking accuracy.

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Analysis of the Influence of Trace Point Step-Jump Behavior

Yang

Wang

2020

International Journal of Aerospace Engineering

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To explore the influence of the trace point step-jump behavior on a terminal guidance system, an analysis is performed from the line-of-sight rate (LOS rate) and guidance accuracy views for designing an anti-step-jump guidance law. First, the linear terminal guidance model under the trace point jump circumstance is constructed, and then the fundamental reason for the miss distance is investigated by deriving the upper bound of the LOS rate at the initial step-jump moment. Following this, the novel proposed analytical differential adjoint model is established with the adjoint method, and its validity is demonstrated comparing with the numeric derivative model. Based on the adjoint model, the effects of the ratio coefficient, the time constant, and the jump amplitude on the guidance accuracy are explored. Finally, a novel anti-step-jump guidance law is designed to shorten the recovery time of the overload. The simulations have shown that the faster recovery time and higher accuracy are achieved in comparison with the proportional navigation guidance, optimal guidance, and adaptive sliding mode guidance.

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The research on infrared seeker with disturbance rejection effect parasitic

Cited by 4 publications

References 3 publications

A New Compensation Method for DRR of a Roll-Pitch Seeker Based on ESO

A New Compensation Method for DRR of a Roll-Pitch Seeker Based on ESO

Research on the Influence of the Disturbance Rejection Rate of a Roll–Pitch Seeker on Stable Tracking Characteristics

Analysis of the Influence of Trace Point Step-Jump Behavior

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