Searched for: author%3A%22Wisse%2C+M.%22
(1 - 20 of 31)

Pages

List view
Grid view
document
Anil Meera, A. (author), Wisse, M. (author)
The free energy principle from neuroscience provides an efficient data-driven framework called the Dynamic Expectation Maximization (DEM), to learn the generative model in the environment. DEM’s growing potential to be the brain-inspired learning algorithm for robots demands a mathematically rigorous analysis using the standard control system...
conference paper 2022
document
Anil Meera, A. (author), Wisse, M. (author)
The free energy principle (FEP) from neuroscience provides a framework called active inference for the joint estimation and control of state space systems, subjected to colored noise. However, the active inference community has been challenged with the critical task of manually tuning the noise smoothness parameter. To solve this problem, we...
conference paper 2022
document
Bos, F.R.R.C. (author), Anil Meera, A. (author), Benders, D. (author), Wisse, M. (author)
The free energy principle from neuroscience provides a brain-inspired perception scheme through a data-driven model learning algorithm called Dynamic Expectation Maximization (DEM). This paper aims at introducing an exper-imental design to provide the first experimental confirmation of the usefulness of DEM as a state and input estimator for...
conference paper 2022
document
Anil Meera, A. (author), Wisse, M. (author)
The free energy principle from neuroscience has recently gained traction as one of the most prominent brain theories that can emulate the brain’s perception and action in a bio-inspired manner. This renders the theory with the potential to hold the key for general artificial intelligence. Leveraging this potential, this paper aims to bridge the...
journal article 2021
document
Pezzato, C. (author), Baioumy, Mohamed (author), Hernández, Carlos (author), Hawes, Nick (author), Wisse, M. (author), Ferrari, Riccardo M.G. (author)
We present a fault tolerant control scheme for robot manipulators based on active inference. The proposed solution makes use of the sensory prediction errors in the free-energy to simplify the residuals and thresholds generation for fault detection and isolation and does not require additional controllers for fault recovery. Results...
conference paper 2020
document
van der Spaa, L.F. (author), Wolfslag, W.J. (author), Wisse, M. (author)
In electrically actuated robots most energy losses are due to the heating of the actuators. This energy loss can be greatly reduced with parallel elastic actuators, by optimizing the elastic element such that it delivers most of the required torques. Previously used optimization methods relied on parameterizing the spring characteristic,...
journal article 2019
document
Lei, Q. (author), Chen, G. (author), Meijer, Jonathan (author), Wisse, M. (author)
Increasing grasping efficiency is very important for the robots to grasp unknown objects especially subjected to unfamiliar environments. To achieve this, a new algorithm is proposed based on the C-shape configuration. Specifically, the geometric model of the used under-actuated gripper is approximated as a C-shape. To obtain an appropriate...
journal article 2018
document
Calli, B. (author), Caarls, W. (author), Wisse, M. (author), Jonker, P.P. (author)
In this paper, a novel active vision strategy is proposed for optimizing the viewpoint of a robot's vision sensor for a given success criterion. The strategy is based on extremum seeking control (ESC), which introduces two main advantages: 1) Our approach is model free: It does not require an explicit objective function or any other task...
journal article 2018
document
Calli, B. (author), Caarls, W. (author), Wisse, M. (author), Jonker, P.P. (author)
Grasp synthesis for unknown objects is a challenging problem as the algorithms are expected to cope with missing object shape information. This missing information is a function of the vision sensor viewpoint. The majority of the grasp synthesis algorithms in literature synthesize a grasp by using one single image of the target object and...
journal article 2018
document
Hernández, Carlos (author), Bharatheesha, M. (author), van Egmond, J.A. (author), Ju, J. (author), Wisse, M. (author)
This article describes Team Delft's robot winning the Amazon Robotics Challenge 2016. The competition involves automating pick and place operations in semi-structured environments, specifically the shelves in an Amazon warehouse.<br/>Team Delft's entry demonstrated that current robot technology can already address most of the challenges in...
journal article 2018
document
Plooij, M.C. (author), Wolfslag, W.J. (author), Wisse, M. (author)
This paper identifies the class of actuators called clutched elastic actuators (CEAs). CEAs use clutches to control the energy flow into springs. CEAs in exoskeletons, prostheses, legged robots, and robotic arms have shown the ability to reduce the energy consumption and motor requirements, such as peak torque and peak power. Because of those...
journal article 2017
document
Meijer, Jonathan (author), Lei, Q. (author), Wisse, M. (author)
This paper identifies high performing motion planners among three manipulators when carrying out grasp executions. Simultaneously, this paper presents useful benchmarking data. Sampling-based motion planners of OMPL available for use in MoveIt! are compared by performing several grasping-related motion planning problems. The performance of the...
conference paper 2017
document
Lei, Q. (author), Wisse, M. (author)
Grasping of unknown objects with neither appearance data nor object models given in advance is very important for robots that work in an unfamiliar environment. The goal of this paper is to quickly synthesize an executable grasp for one unknown object by using cylinder searching on a single point cloud. Specifically, a 3D camera is first used to...
conference paper 2017
document
Lei, Q. (author), Chen, G. (author), Wisse, M. (author)
Fast grasping of unknown objects has crucial impact on the efficiency of robot manipulation especially subjected to unfamiliar environments. In order to accelerate grasping speed of unknown objects, principal component analysis is utilized to direct the grasping process. In particular, a single-view partial point cloud is constructed and...
journal article 2017
document
Meijer, Jonathan (author), Lei, Q. (author), Wisse, M. (author)
This paper identifies high-performing Open Motion Planning Library (OMPL) planners for grasp execution and simultaneously presents useful benchmark data. Four grasp executions were defined using a UR5 manipulator. The performance was measured by means of solved runs, computing time and path length. Based on the results, planners are...
conference paper 2017
document
Lei, Q. (author), Meijer, Jonathan (author), Wisse, M. (author)
This paper identifies high-performing Open Motion Planning Library (OMPL) planners for grasp execution and simultaneously presents useful benchmark data. Four grasp executions were defined using a UR5 manipulator. The performance was measured by means of solved runs, computing time and path length. Based on the results, planners are...
conference paper 2017
document
Plooij, M.C. (author), Wisse, M. (author), Vallery, H. (author)
Parallel elastic actuators (PEAs) have shown the ability to reduce the energy consumption of robots. However, regular PEAs do not allow us to freely choose at which instant or configuration to store or release energy. This paper introduces the concept and design of the bidirectional clutched parallel elastic actuator (BIC-PEA), which reduces...
journal article 2016
document
Lei, Q. (author), Wisse, M. (author)
The current research trends of object grasping can be summarized as caging grasping and force closure grasping. The motivation of this paper is to combine the advantage of caging grasping and force closure grasping to enable under-actuated grippers like the Lacquey gripper and the parallel grippers like the PR2 gripper to quickly grasp the...
conference paper 2016
document
Lei, Q. (author), Wisse, M. (author)
Reducing the grasp candidates for unknown object grasping while maintaining grasp stability is the goal of this paper. In this paper, we propose an efficient and straight forward unknown object grasping method by using concavities of the unknown objects to significantly reduce the grasp candidates. Shortest path concavity is first employed to...
conference paper 2016
document
Bregman, D.J.J. (author), Van der Krogt, M.M. (author), De Groot, V. (author), Harlaar, J. (author), Wisse, M. (author), Collins, S.H. (author)
Background In stroke and multiple sclerosis patients, gait is frequently hampered by a reduced ability to push-off with the ankle caused by weakness of the plantar-flexor muscles. To enhance ankle push-off and to decrease the high energy cost of walking, spring-like carbon-composite Ankle Foot Orthoses are frequently prescribed. However, it is...
journal article 2011
Searched for: author%3A%22Wisse%2C+M.%22
(1 - 20 of 31)

Pages

List view
Grid view