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Added optional smoothing to muscle dynamics:

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- `muscle` actuators take a new `tausmooth` attribute (defaults to 0) which when positive, smooths the transition between activation and deactivation timescales.
- `mju_muscleDynamics` takes 3 parameters, adding width of smoothing sigmoid.

PiperOrigin-RevId: 531473354
Change-Id: I8ab6c0289ff04437e798c3ca6edda132a30fcc31
This commit is contained in:
Yuval Tassa
2023-05-12 04:58:17 -07:00
committed by Copybara-Service
parent 777cad52b4
commit 770b4b363a
13 changed files with 180 additions and 34 deletions
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doc/includes/references.h
+1 -1
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@@ -2434,7 +2434,7 @@ mjtNum mju_muscleGain(mjtNum len, mjtNum vel, const mjtNum lengthrange[2],
mjtNum acc0, const mjtNum prm[9]);
mjtNum mju_muscleBias(mjtNum len, const mjtNum lengthrange[2],
mjtNum acc0, const mjtNum prm[9]);
mjtNum mju_muscleDynamics(mjtNum ctrl, mjtNum act, const mjtNum prm[2]);
mjtNum mju_muscleDynamics(mjtNum ctrl, mjtNum act, const mjtNum prm[3]);
void mju_encodePyramid(mjtNum* pyramid, const mjtNum* force, const mjtNum* mu, int dim);
void mju_decodePyramid(mjtNum* force, const mjtNum* pyramid, const mjtNum* mu, int dim);
mjtNum mju_springDamper(mjtNum pos0, mjtNum vel0, mjtNum Kp, mjtNum Kv, mjtNum dt);