Results 31 to 40 of about 5,368,406 (286)

Guidance Law for Autonomous Takeoff and Landing of Unmanned Helicopter on Mobile Platform Based on Asymmetric Tracking Differentiator

open access: yesMathematics, 2022
For some flight missions, such as autonomous landing on mobile platforms, the demands on indicators such as target-tracking accuracy and so on are relatively high. To achieve this, a guidance system with excellent precision is necessary.
Zian Wang   +5 more
doaj   +1 more source

Cooperative Midcourse Guidance Law with Communication Delay

open access: yesInternational Journal of Aerospace Engineering, 2021
The initial conditions of the cooperative terminal guidance law, which are the terminal conditions of the cooperative midcourse guidance, have a greater impact on its cooperation and guidance precision, so it is worthy of investigating the cooperative ...
Zihao Wu   +4 more
semanticscholar   +1 more source

Anti-Saturation and Undecoupled Diving Attack Guidance Law for Impact Angle and Time Constraints [PDF]

open access: yesHangkong bingqi, 2023
Aiming at the characteristics of the motion model of the dive attack segment of hypersonic vehicle, such as strong nonlinearity, strong coupling between channels, complex constraints and easy overload saturation under the limit condition, a kind of anti ...
Ge Song, Xia Wenjie, Yan Xunliang
doaj   +1 more source

A New Backstepping Sliding Mode Guidance Law Considering Control Loop Dynamics [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2016
In this paper, a new procedure for designing the guidance law considering the control loop dynamics is proposed. The nonlinear guidance loop entailing a first order lag as the control loop dynamics is formulated. A new finite time and smooth backstepping
Vahid Behnamgol   +2 more
doaj  

Generalized Formulation of Weighted Optimal Guidance Laws with Impact Angle Constraint

open access: yes, 2013
The purpose of this paper is to investigate the generalized formulation of weighted optimal guidance laws with impact angle constraint. From the generalized formulation, we explicitly find the feasible set of weighting functions that lead to analytical ...
Lee, Chang-Hun   +2 more
core   +1 more source

A Generalized Super-Twisting Extended State Observer for Angle-Constrained Terminal Sliding Mode Guidance Law

open access: yesAerospace
In this article, a novel finite-time convergent three-dimensional terminal sliding mode guidance law is proposed for intercepting maneuvering targets in three-dimensional space with terminal angle constraints. The proposed guidance law introduces a novel
Zhe Hu, Liang Xiao, Wenjun Yi
doaj   +1 more source

Combined Homing Guidance Law of Torpedo Based on Fuzzy Control

open access: yes水下无人系统学报
In the process of torpedo homing guidance, it is difficult for a single guidance method to adapt to different guidance phases and ensure the torpedo guidance effect effectively.
Baoming MU, Jianqing CHENG, Feng PAN
doaj   +1 more source

Finite Time Guidance Law to Intercept Desired LOS Angle Using NTSM Control [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2018
Nonsingular terminal sliding mode (NTSM) guidance for intercepting the desired line of sight (LOS) angle in terminal phase is proposed in this paper. In order to satisfy the predefined LOS angle and to intercep into target, a nonsingular terminal sliding
Vahid Behnamgol   +2 more
doaj  

Addressing the Inadequacies of Private Law in the Regulation of Contracts – During and Post Contract Formation Periods [PDF]

open access: yes, 2011
It has been argued that weaknesses inherent in Private Law rules, which contribute to its inability to effectively regulate contracts, are in part, attributed to its generality as well as inflexibility in adapting to individual situations.
Ojo, Mariane.B.
core   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

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