Search Results for author: Zengjie Zhang

Found 17 papers, 4 papers with code

Intention-Aware Control Based on Belief-Space Specifications and Stochastic Expansion

1 code implementation13 Apr 2024 Zengjie Zhang, Zhiyong Sun, Sofie Haesaert

This paper develops a correct-by-design controller for an autonomous vehicle interacting with opponent vehicles with unknown intentions.

Autonomous Driving Model Predictive Control

Risk-Aware Real-Time Task Allocation for Stochastic Multi-Agent Systems under STL Specifications

no code implementations2 Apr 2024 Maico H. W. Engelaar, Zengjie Zhang, Eleftherios E. Vlahakis, Mircea Lazar, Sofie Haesaert

This paper addresses the control synthesis of heterogeneous stochastic linear multi-agent systems with real-time allocation of signal temporal logic (STL) specifications.

Autonomous Driving Model Predictive Control

Risk-Aware MPC for Stochastic Systems with Runtime Temporal Logics

no code implementations5 Feb 2024 Maico H. W. Engelaar, Zengjie Zhang, Mircea Lazar, Sofie Haesaert

This paper concerns the risk-aware control of stochastic systems with temporal logic specifications dynamically assigned during runtime.

Model Predictive Control Motion Planning

Identifying Reaction-Aware Driving Styles of Stochastic Model Predictive Controlled Vehicles by Inverse Reinforcement Learning

no code implementations23 Aug 2023 Ni Dang, Tao Shi, Zengjie Zhang, Wanxin Jin, Marion Leibold, Martin Buss

Nevertheless, an important indicator of the driving style, i. e., how an AV reacts to its nearby AVs, is not fully incorporated in the feature design of previous ME-IRL methods.

Autonomous Driving Model Predictive Control

Using Implicit Behavior Cloning and Dynamic Movement Primitive to Facilitate Reinforcement Learning for Robot Motion Planning

no code implementations29 Jul 2023 Zengjie Zhang, Jayden Hong, Amir Soufi Enayati, Homayoun Najjaran

Reinforcement learning (RL) for motion planning of multi-degree-of-freedom robots still suffers from low efficiency in terms of slow training speed and poor generalizability.

Motion Planning Reinforcement Learning (RL)

Risk-Aware Reward Shaping of Reinforcement Learning Agents for Autonomous Driving

1 code implementation5 Jun 2023 Lin-Chi Wu, Zengjie Zhang, Sofie Haesaert, Zhiqiang Ma, Zhiyong Sun

Reinforcement learning (RL) is an effective approach to motion planning in autonomous driving, where an optimal driving policy can be automatically learned using the interaction data with the environment.

Autonomous Driving Motion Planning +3

Human-Robot Skill Transfer with Enhanced Compliance via Dynamic Movement Primitives

no code implementations12 Apr 2023 Jayden Hong, Zengjie Zhang, Amir M. Soufi Enayati, Homayoun Najjaran

Our contribution is introducing a systematic method to extract the dynamic features from human demonstration to auto-tune the parameters in the DMP framework.

Reinforcement Learning (RL) Trajectory Planning

Distributed Coverage Control of Constrained Constant-Speed Unicycle Multi-Agent Systems

no code implementations12 Apr 2023 Qingchen Liu, Zengjie Zhang, Nhan Khanh Le, Jiahu Qin, Fangzhou Liu, Sandra Hirche

This paper proposes a novel distributed coverage controller for a multi-agent system with constant-speed unicycle robots (CSUR).

A Persistent-Excitation-Free Method for System Disturbance Estimation Using Concurrent Learning

1 code implementation12 Apr 2023 Zengjie Zhang, Fangzhou Liu, Tong Liu, Jianbin Qiu, Martin Buss

A simulation study on epidemic control shows that the proposed method produces higher estimation precision than the conventional disturbance observer when PE is not satisfied.

Facilitating Sim-to-real by Intrinsic Stochasticity of Real-Time Simulation in Reinforcement Learning for Robot Manipulation

no code implementations12 Apr 2023 Ram Dershan, Amir M. Soufi Enayati, Zengjie Zhang, Dean Richert, Homayoun Najjaran

Simulation is essential to reinforcement learning (RL) before implementation in the real world, especially for safety-critical applications like robot manipulation.

Reinforcement Learning (RL) Robot Manipulation

Exploiting Symmetry and Heuristic Demonstrations in Off-policy Reinforcement Learning for Robotic Manipulation

no code implementations12 Apr 2023 Amir M. Soufi Enayati, Zengjie Zhang, Kashish Gupta, Homayoun Najjaran

A comparison study between the proposed method and a traditional off-policy reinforcement learning algorithm indicates its advantage in learning performance and potential value for applications.

reinforcement-learning Robot Manipulation

Automated Formation Control Synthesis from Temporal Logic Specifications

no code implementations1 Apr 2023 Shuhao Qi, Zengjie Zhang, Sofie Haesaert, Zhiyong Sun

In many practical scenarios, multi-robot systems are envisioned to support humans in executing complicated tasks within structured environments, such as search-and-rescue tasks.

Navigate

Modularized Control Synthesis for Complex Signal Temporal Logic Specifications

1 code implementation30 Mar 2023 Zengjie Zhang, Sofie Haesaert

In this paper, we propose a framework to transform a long and complex specification into separate forms in time, to be more specific, the logical combination of a series of short and simple subformulas with non-overlapping timing intervals.

Simultaneous Recursive Identification of Parameters and Switching Manifolds Identification of Discrete-Time Switched Linear Systems

no code implementations7 Mar 2023 Zengjie Zhang, Yingwei Du, Tong Liu, Fangzhou Liu, Martin Buss

Thirdly, techniques of incremental support vector machine are applied to develop the recursive algorithm to estimate the system switching manifolds, with its stability proven by a Lynapunov-based method.

Average Communication Rate for Event-Triggered Stochastic Control Systems

no code implementations13 Jan 2023 Zengjie Zhang, Qingchen Liu, Mohammad H. Mamduhi, Sandra Hirche

Quantifying the average communication rate (ACR) of a networked event-triggered stochastic control system (NET-SCS) with deterministic thresholds is challenging due to the non-stationary nature of the system's stochastic processes.

Adaptive Observer for a Class of Systems with Switched Unknown Parameters Using DREM

no code implementations30 Mar 2022 Tong Liu, Zengjie Zhang, Fangzhou Liu, Martin Buss

These responses depend on the unknown states at switching instants (SASI) and constitute an additive disturbance to the parameter estimation, which obstructs parameter convergence to zero.

Cannot find the paper you are looking for? You can Submit a new open access paper.