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  • Users: David Ren
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  1. David Ren

    What is the ODE for a mass-spring-damper system with dynamic friction?

    I know that the second order differential equation for a mass-spring-damper system, assuming some initial velocity and position and no external force is: m*a + c*v + k*x = 0 Where a is the second derivative of x, and v is the first derivative. Say I want to add dynamic friction to my system. I...
  2. David Ren

    What determains the steaty-state velocity of an open loop DC motor?

    I have a Simulink model of an open-loop DC motor. I am trying to understand what parameters effect the final steady state angular velocity of the motor. From playing around with different values, it seems that: A. The input voltage, electric resistance, viscous resistance (damper) and torque...

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