how to find out overcoming force in linear actuator model

how to find out overcoming force in linear actuator model?

I am using linear actuator model. Power supply dc is applied to model.

iam able to read spring force using force sensor connected with translational spring in series.

but I could not find plunger force(Over coming force).So, How to find out plunger force.

Spring force is 55N here.Displacement position Position is 0.0025m.

I don't know how to measure overcoming force in model.So,Kindly reply with example model to find overcoming force.

Generate Force = Overcoming force + spring force.

Note:In my model I applied spring rate 7500N/m with initial target force 37 N.When run model(i am using run time) for 2 sec, spring force is 55 N.it is correct answer and displacement is 0.0025 m.

Answer 1

[Arnav]

Hi @adhavan d,

Assuming to be the force exerted on the plunger by the actuator and x and m to be the displacement and mass of the plunger respectively (mass can be taken from the mask of the actuator). The equation of motion of actuator is then: where k is the spring constant.

The quantity to be estimatated is . All quantities on the right-hand side of the equation can be taken from the model as:

The spring force can also be taken directly from the Ideal Force Sensor attached to the spring.