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Tasks

Tasks is library for real time control of robots and kinematic trees using constrained optimization. It has been used extensively to control humanoid robots such as HOAP-3, HRP-2, HRP-4 and Atlas.

Documentation

Features:

Support Kinematics Tree with Revolute/Prismatic/Spherical/Free/Planar/Cylindrical joints
Dynamic motion (motion must fulfill the equation of motion)
Contact forces in friction cones
Static contacts
Articular position, speed and torque limits
Collision avoidance
Multi-robot contact (can solve problems involving multiple robots in contact)
Tasks:
Posture target (articular position target, mandatory if you want avoid singularity issues)
Link Position/Orientation target
Link Velocity target
Center of Mass (CoM) target
Momentum target
Contact force target

To make sure that Tasks works as intended, unit tests are available for each algorithm.

The SpaceVecAlg and RBDyn tutorial is also a big resources to understand how to use Tasks by providing a lot of IPython Notebook that will present real use case.

An online documentation can be found online.

Installing

Ubuntu LTS (16.04, 18.04, 20.04)

You must first setup our package mirror:

curl -1sLf \
  'https://dl.cloudsmith.io/public/mc-rtc/stable/setup.deb.sh' \
  | sudo -E bash

You can also choose the head mirror which will have the latest version of this package:

curl -1sLf \
  'https://dl.cloudsmith.io/public/mc-rtc/head/setup.deb.sh' \
  | sudo -E bash

You can then install the package:

sudo apt install libtasks-dev python-tasks python3-tasks

Conan

Install the latest version using conan

conan remote add multi-contact https://api.bintray.com/conan/gergondet/multi-contact
# Install the latest release
conan install Tasks/latest@multi-contact/stable
# Or install the latest development version
# conan install Tasks/latest@multi-contact/dev

Manually build from source

Dependencies

To compile you need the following tools and libraries:

Git
CMake >= 2.8
pkg-config
doxygen
g++ >= 4.7 (for C++11 support)
Boost >= 1.49
Eigen >= 3.2
SpaceVecAlg
RBDyn
eigen-qld
eigen-lssol (Optional, if you have the LSSOL licence ask us this library)
sch-core

For Python bindings:

Building

git clone --recursive https://github.com/jrl-umi3218/Tasks
cd Tasks
mkdir _build
cd _build
cmake [options] ..
make && make intall

CMake options

By default, the build will use the python and pip command to install the bindings for the default system version (this behaviour can be used to build the bindings in a given virtualenv). The following options allow to control this behaviour:

PYTHON_BINDING Build the python binding (ON/OFF, default: ON)
PYTHON_BINDING_FORCE_PYTHON2: use python2 and pip2 instead of python and pip
PYTHON_BINDING_FORCE_PYTHON3: use python3 and pip3 instead of python and pip
PYTHON_BINDING_BUILD_PYTHON2_AND_PYTHON3: builds two sets of bindings one with python2 and pip2, the other with python3 and pip3
BUILD_TESTING Enable unit tests building (ON/OFF, default: ON)