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README.md

Manipulation Task and Motion Planning

This repository contains code for our recent work on symbolic-decision-embedded bilevel optimization for manipulation task and motion planning using PDDL and DDP/ADMM.

The code is based on Drake (Please see the Drake Documentation for moreinformation). Here we include the source code of Drake and our own addition for manipulation task and motion planning in the manipulation_tamp and traj_gen folder.

The manipulation_tamp directory contains implementations of the high level searching algorithm as well as the causal graph task decomposition. The symbolic planning domain definitions of our experiments are under the pddl directory. The planner uses Pyperplan as a submodule to parse PDDL into Python. The resulting trajectories and action sequences are stored in Json format under manipulation_tamp/results folder. The simulation of object sorting in clutter and conveyor belt sorting scenarios are implemented here using Drake.

The traj_gen directory contains the code for trajectory optimization using DDP/ADMM. An example of how to use DDP/ADMM planners will be released soon. The contact version of DDP/ADMM that considers object dynamics is also implemented under ilqr_kkt directory. The runners ending in the "-contact" suffix will be called when selecting high-level actions that involve contacts between the gripper and the object, such as grasping or pushing.

Setup

The code is tested on Ubuntu 18.04 and 20.04 and Python 3.6 or newer.

drake setup

git clone https://github.com/GTLIDAR/tamp-manipulation.git
cd tamp-manipulation
sudo ./setup/ubuntu/install_prereqs.sh

pydrake installation

cd /path/to/tamp_manipulation
mkdir -p build/install
bazel run //:install -- ~+/build/install

add pydrake to PYTHONPATH
Ubuntu 20.04

echo "export PYTHONPATH=/path/to/tamp_manipulation/build/install/lib/python3.8/site-packages:${PYTHONPATH}" >> ~/.bashrc
source ~/.bashrc

Ubuntu 18.04

echo "export PYTHONPATH=/path/to/tamp_manipulation/build/install/lib/python3.6/site-packages:${PYTHONPATH}" >> ~/.bashrc
source ~/.bashrc

Setup PDDL planning code and Pyperplan submodule

sudo apt install python3 python3-pip
python3 -m pip install numpy scipy matplotlib networkx
git submodule update --init --recursive
cd /path/to/tamp_manipulation/manipulation_tamp/planner/pyperplan
sudo python3 setup.py install

build this project

Ubuntu 18.04

cd /path/to/tamp_manipulation
bazel build //tools:drake_visualizer
bazel build //manipulation_tamp/...

Ubuntu 20.04

sudo apt install clang
cd /path/to/tamp_manipulation
CC=clang CXX=clang++ bazel build //tools:drake_visualizer
CC=clang CXX=clang++ bazel build //manipulation_tamp/...

run static object sorting planner

cd /path/to/tamp_manipulation
./bazel-bin/manipulation_tamp/pddl_multi_wp_query_handler_contact

cd /path/to/tamp_manipulation/manipulation_tamp/planner
python3 object_sorting_plan.py

run static object sorting planner

cd /path/to/tamp_manipulation
./bazel-bin/manipulation_tamp/pddl_multi_wp_query_handler_contact

cd /path/to/tamp_manipulation/manipulation_tamp/planner
python3 object_sorting_planner.py

run result from static object sorting planner

result will be saved under //manipulation_tamp/results folder
open //manipulation_tamp/json_traj_runner.py
find the result json file you need to run, change JSON_FILENAME variable in json_traj_runner.py

run in this order

./bazel-bin/tools/drake_visualizer

./bazel-bin/manipulation_tamp/kuka_planner_runner

cd /path/to/tamp_manipulation/manipulation_tamp
python3 json_traj_runner.py

./bazel-bin/manipulation_tamp/object_sorting_simulation

run static conveyor belt planner

cd /path/to/tamp_manipulation
./bazel-bin/manipulation_tamp/pddl_multi_wp_query_handler_contact

cd /path/to/tamp_manipulation/manipulation_tamp/planner
python3 conveyor_belt_planner.py

run result from static object sorting planner

result will be saved under //manipulation_tamp/results folder
open //manipulation_tamp/json_traj_runner.py
find the result json file you need to run, change JSON_FILENAME variable in json_traj_runner.py

run in this order

./bazel-bin/tools/drake_visualizer

./bazel-bin/manipulation_tamp/kuka_planner_runner

cd /path/to/tamp_manipulation/manipulation_tamp
python3 json_traj_runner.py

./bazel-bin/manipulation_tamp/conveyor_belt_simulation

Project and Related Publications

This work is a part of our ongoing work on task and motion planning for manipulation in dynamic and cluttered environments.

This repo contains the code used for implementation in our work SyDeBO: Symbolic-Decision-Embedded Bilevel Optimization for Long-Horizon Manipulation in Dynamic Environments.

@misc{zhao2020sydebo,
      title={SyDeBO: Symbolic-Decision-Embedded Bilevel Optimization for Long-Horizon Manipulation in Dynamic Environments}, 
      author={Zhigen Zhao and Ziyi Zhou and Michael Park and Ye Zhao},
      year={2020},
      eprint={2010.11078},
      archivePrefix={arXiv},
      primaryClass={cs.RO}
}