Ideal spring in mechanical rotational systems
The Rotational Spring block represents an ideal mechanical rotational linear spring, described with the following equations:
|T||Torque transmitted through the spring|
|φ||Relative displacement angle (spring deformation)|
|φinit||Spring preliminary winding (spring offset)|
|φR,φC||Absolute angular displacements of terminals R and C, respectively|
|ω||Relative angular velocity|
The block positive direction is from port R to port C. This means that the torque is positive if it acts in the direction from R to C.
Spring rate. The default value is 10 N*m/rad.
Spring initial deformation, or offset, in angular units. The deformation is determined as φ = φinit + φR – φC, where φinit is the initial deformation, and φR,φCare the absolute angular displacements of terminals R and C in the globally assigned positive direction. The spring can be initially compressed (φinit > 0) or stretched (φinit < 0). This parameter specifies the initial condition for use in computing the block's initial state at the beginning of a simulation run. For more information, see Initial Conditions Computation. The default value is 0.
The block has the following ports: