Comparison and Identifiability Analysis of Friction Models for the Dither Motion of a Solenoid

Wenzl, Hanna; Straußberger, Florian; Braun, Tristan; Wirtensohn, Stefan; Kiltz, Lothar; Reuter, Johannes; Aschemann, Harald

doi:10.1109/mmar.2018.8485888

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…The magnetic force is the only external excitation of the mass-spring-damper system that forms the actuator mechanism. Although it is possible to use more sophisticated models [32], in this work both the spring and the damper will be considered to be linear. The dynamics of the motion, which is given by Newton's second law, is therefore as follows,…”

Section: A Free Motion Dynamicsmentioning

confidence: 99%

On the Stability of Electromechanical Switching Devices: An Analytic Study of Hysteretic Switching Behaviors

Ramirez-Laboreo¹,

Sagüés²

2022

Preprint

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Electromagnetic relays and solenoid actuators are commercial devices that generally exhibit bistable behavior. In fact, this is the reason why they are extensively used to switch between two possible configurations in electrical, pneumatic, or hydraulic circuits, among others. Although the state of the art is extensive on modeling, estimation, and control of these electromechanical systems, there are very few works that focus on analysis aspects. In this paper, we present an equilibrium and stability analysis whose main goal is to provide insight into such bistable behavior. The study is based on a hybrid dynamical model of the system also presented in the paper. This model is used to obtain analytic expressions that relate the physical parameters to the switching conditions. The results are extensively discussed and possible practical applications are also proposed.

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Section: A Free Motion Dynamicsmentioning

confidence: 99%

On the Stability of Electromechanical Switching Devices: An Analytic Study of Hysteretic Switching Behaviors

Ramirez-Laboreo¹,

Sagüés²

2022

Preprint

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“…where k s is the spring stiffness constant, c is the damping coefficient, and F 0 accounts for gravity and the spring preload force. If necessary, more sophisticated models can be found in the literature [23] that could also be used. On the other hand, the magnetic force can be expressed in terms of the reluctance [21] as…”

Section: Free Motion Dynamicsmentioning

confidence: 99%

Design of a perfect-tracking soft-landing controller for electromagnetic switching devices

2022

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Electromagnetic switching devices such as electromechanical relays and solenoid valves suffer from impacts and mechanical wear when they are activated using a constant-voltage policy. This paper presents a new control approach that aims at achieving soft landing in these devices, i.e., a movement without neither impacts nor bouncing. The hybrid nonlinear dynamics of the system is firstly described taking into account the limited range of motion that characterizes this class of devices. Then, the nonlinear expression of the control law is derived and a method to design a soft-landing reference trajectory is proposed. It is shown that, when certain conditions are met, the design methodology presented in the paper results in a controller that achieves perfect tracking of the reference trajectory and, hence, soft landing is accomplished. The theoretical analysis is validated by simulation using a dynamical model of a specific switching device.

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Comparison and Identifiability Analysis of Friction Models for the Dither Motion of a Solenoid

Cited by 2 publications

References 7 publications

On the Stability of Electromechanical Switching Devices: An Analytic Study of Hysteretic Switching Behaviors

On the Stability of Electromechanical Switching Devices: An Analytic Study of Hysteretic Switching Behaviors

Design of a perfect-tracking soft-landing controller for electromagnetic switching devices

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