Control of velocity of DC motors by classical and passivity methods measuring only position: Theory and experimental comparison

Guerrero, Cuauhtemoc

doi:10.1109/tla.2020.9082926

Cited by 3 publications

(1 citation statement)

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“…In [2] there is a study on the nonlinear position control VOLUME 4, 2016 for permanent magnet stepper motor using only position feedback, since in industrial applications the velocity measurement has been not widely used due to either its resolution or cost concern. In [3] the authors present a control of velocity for DC Motors measuring only angular position. Avila-Becerril designed in [4] a dynamic controller which is based on measurements of link and joint positions only, for flexible-joint robots.…”

Section: Introductionmentioning

confidence: 99%

Implementations of Full State Feedback Robust Control Designs for Mechanical Systems Using Only Positions or Velocities Output Feedback

et al. 2022

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This paper proposes a new design and practical implementation of a robust H ∞ control applied to some mechanical systems considering in the controller design full access to the state variables and in the equivalent controller implementation only the feedback of all positions or of all velocities of the plant. An important characteristic, though, is that limitations are considered for the state feedback. Two methods are presented, one that uses feedback only from state variables related to positions of the system and another that uses feedback only from state variables related to velocities. The control strategy is based on Linear Matrix Inequalities (LMIs), using the theory of D-stability, which allows the designer to allocate the closed loop system eigenvalues in a negative complex semi-plane region, which, in addition to ensuring stability, also allows to attend certain performance requirements of the feedback system. The paper motivation is to provide satisfactory control results with limited states access, without any kind of estimation of the state variables that are not available. Therefore, the proposed control systems are interesting options as alternatives for the design of full-order state feedback for plants with uncertain parameters using only output feedback, considering that it is not required to build an observer to estimate any plant state variable. Furthermore, their implementations are relatively cheaper because it is not necessary to measure all state variables of the plant.

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Section: Introductionmentioning

confidence: 99%