Ticket #4229: BouncingBall.mo
| File BouncingBall.mo, 417 bytes (added by , 8 years ago) |
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| 1 | model BouncingBall |
| 2 | parameter Real e=0.7 "coefficient of restitution"; |
| 3 | parameter Real g=9.81 "gravity acceleration"; |
| 4 | Real h(start=1) "height of ball"; |
| 5 | Real v "velocity of ball"; |
| 6 | Boolean flying(start=true) "true, if ball is flying"; |
| 7 | |
| 8 | equation |
| 9 | der(h) = v; |
| 10 | der(v) = if flying then -g else 0; |
| 11 | flying = not (h <= 0 and v <= 0); |
| 12 | |
| 13 | when h <= 0.0 then |
| 14 | reinit(v, -e*pre(v)); |
| 15 | end when; |
| 16 | |
| 17 | end BouncingBall; |
