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Download SimMechanics User`s Guide
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mech_pdf.book Page 131 Tuesday, February 1, 2005 1:57 PM Machine Environment Configuring the Dynamics In this pane, you configure settings that control the mechanical dynamics. Gravity vector The value of this parameter is a MATLAB vector that specifies the magnitude and direction of gravitational acceleration in the model’s world coordinate system. It must be a three-component vector. The default vector is [0 -9.81 0]. This field is disabled if you choose to input gravity as a signal. The default units are m/s2 (meters per square second). Use the pull-down menu to the right if you want to reset the units. Input gravity as signal Select this check box if you want to disable the Gravity vector field and instead input gravity as a variable Simulink signal. The default is unselected. If you select this check box, a Simulink inport appears on the block in addition to the existing Machine Environment port. You input the gravity vector as a three-component Simulink signal to this port. The components are, respectively, x, y, and z. Gravity signal line 9-131
