Soft-landing control for sensorless electromagnetical spring-mass actuators

2004 ◽  
Author(s):  
C. Gunselmann
Keyword(s):  
Soft Landing ◽  
Landing Control

D-SDRE Based Soft-Landing Control of a Lunar Lander with Active Momentum Exchange Impact Dampers

2021 ◽  
Author(s):  
Yi-Lun Hsu ◽  
Jhih-Hong Lin ◽  
Chen-Yu Chan ◽  
Cheng-Wei Chen
Keyword(s):  
Momentum Exchange ◽  
Soft Landing ◽  
Lunar Lander ◽  
Landing Control

In-flight wind identification and soft landing control for autonomous unmanned powered parafoils

2018 ◽  
Vol 49 (5) ◽  
pp. 929-946 ◽  
Author(s):  
Shuzhen Luo ◽  
Panlong Tan ◽  
Qinglin Sun ◽  
Wannan Wu ◽  
Haowen Luo ◽  
...  
Keyword(s):  
Soft Landing ◽  
Wind Identification ◽  
Landing Control

An Optimal Soft Landing Control for Moon Lander by Means of Measures

2011 ◽  
Vol 52-54 ◽  
pp. 1861-1867
Author(s):  
J.A. Fakharzadeh ◽  
Sajad Salehi
Keyword(s):  
Dynamical System ◽  
Control Strategy ◽  
Measure Space ◽  
Optimization Problem ◽  
Optimal Solution ◽  
The Other ◽  
Solution Path ◽  
Soft Landing ◽  
Variational Form ◽  
Landing Control

Designing a new control strategy for a moon lander to achieve an optimal soft landing, is the main purpose of this paper. For the dynamical system of the propeller to achieve the lowest level of fuel consumption, the problem of soft landing is presented as an optimal control one. Representing this into a variational form, transferring to an optimization problem on a measure space and then determining the optimal solution via a linear programming problem is the new solution path. This method has some important advantages in compare with the other, which are explain within a numerical simulation.

Optimal soft landing control for moon lander

Automatica ◽  
2008 ◽  
Vol 44 (4) ◽  
pp. 1097-1103 ◽  
Author(s):  
Xing-Long Liu ◽  
Guang-Ren Duan ◽  
Kok-Lay Teo
Keyword(s):  
Soft Landing ◽  
Landing Control

Multiobjective Optimal Design and Soft Landing Control of an Electromagnetic Valve Actuator for a Camless Engine

2013 ◽  
Vol 18 (3) ◽  
pp. 963-972 ◽  
Author(s):  
Yee-Pien Yang ◽  
Jieng-Jang Liu ◽  
Da-Hau Ye ◽  
Yi-Ruei Chen ◽  
Pai-Hsiu Lu
Keyword(s):  
Optimal Design ◽  
Soft Landing ◽  
Electromagnetic Valve ◽  
Camless Engine ◽  
Landing Control

Soft landing control strategy for biped robot

2017 ◽  
Vol 44 (3) ◽  
pp. 312-323 ◽  
Author(s):  
Hongbo Zhu ◽  
Minzhou Luo ◽  
Jianghai Zhao ◽  
Tao Li
Keyword(s):  
Control Strategy ◽  
Biped Robot ◽  
Soft Landing ◽  
Content Type ◽  
Landing Impact ◽  
Impulsive Forces ◽  
Reaction Forces ◽  
On Line ◽  
Landing Control ◽  
Impulsive Reaction

Purpose The purpose of this paper was to present a soft landing control strategy for a biped robot to avoid and absorb the impulsive reaction forces (which weakens walking stability) caused by the landing impact between the swing foot and the ground. Design/methodology/approach First, a suitable trajectory of the swing foot is preplanned to avoid the impulsive reaction forces in the walking direction. Second, the impulsive reaction forces of the landing impact are suppressed by the on-line trajectory modification based on the extended time-domain passivity control with admittance causality that has the reaction forces as inputs and the decomposed swing foot’s positions to trim off the forces as the outputs. Findings The experiment data and results are described and analyzed, showing that the proposed soft landing control strategy can suppress the impulsive forces and improve walking stability. Originality/value The main contribution is that a soft landing control strategy for a biped robot was proposed to deal with the impulsive reaction forces generated by the landing impact, which enhances walking stability.

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