5 citations · 9 across the 8 of their papers we have counts for
8 papers
Data-Driven Unknown Input Reconstruction for MIMO Systems with Convergence Guarantees
Enno Breukelman, Takumi Shinohara, Joowon Lee +1
In this paper, we consider data-driven reconstruction of unknown inputs for deterministic, linear time-invariant (LTI) multiple-input multiple-output (MIMO) systems. We propose a n…
Taking Advantage of Rational Canonical Form for Faster Ring-LWE based Encrypted Controller with Recursive Multiplication
Donghyeon Song, Yeongjun Jang, Joowon Lee +1
This paper aims to provide an efficient implementation of encrypted linear dynamic controllers that perform recursive multiplications on a Ring-Learning With Errors (Ring-LWE) base…
Ensuring Stability of Non-Minimal Modes in Input-Output Data-Driven Representation
Joowon Lee, Nam Hoon Jo, Hyungbo Shim +2
Many recent data-driven control approaches for linear time-invariant systems are based on output trajectory prediction using input-output data matrices. The system dynamics describ…
Stabilization by Controllers Having Integer Coefficients
Joowon Lee, Donggil Lee, Junsoo Kim
The system property of ``having integer coefficients,'' that is, a transfer function has an integer monic polynomial as its denominator, is significant in the field of encrypted co…
Documentation on Encrypted Dynamic Control Simulation Code using Ring-LWE based Cryptosystems
Yeongjun Jang, Joowon Lee, Junsoo Kim
Encrypted controllers offer secure computation by employing modern cryptosystems to execute control operations directly over encrypted data without decryption. However, incorporati…
Ring-LWE based encrypted controller with unlimited number of recursive multiplications and effect of error growth
Yeongjun Jang, Joowon Lee, Seonhong Min +3
In this paper, we propose an encrypted dynamic controller that executes an unlimited number of recursive homomorphic multiplications on a Ring Learning With Errors (Ring-LWE) based…
A Learning With Errors based encryption scheme for dynamic controllers that discloses residue signal for anomaly detection
Yeongjun Jang, Joowon Lee, Junsoo Kim +2
Although encrypted control systems ensure confidentiality of private data, it is challenging to detect anomalies without the secret key as all signals remain encrypted. To address…
Encrypted Dynamic Control exploiting Limited Number of Multiplications and a Method using RLWE-based Cryptosystem
Joowon Lee, Donggil Lee, Junsoo Kim +1
In this paper, we present a method to encrypt dynamic controllers that can be implemented through most homomorphic encryption schemes, including somewhat, leveled fully, and fully…