title: Failed to find library 'powerlib' matlab. Simulink program executing
body: <p>When I tried to run a Simulink program under my R2009a Matlab, it showed an error message as follows: Failed to find library 'powerlib' referenced by 'dcmotor_openloop/Armature Current '. This library must be on your MATLAB path.</p>
  
  <p>I'm wondering where I can find this powerlib.</p>