# Timestamp Temporal Logic (TTL) for Testing the Timing of Cyber-Physical Systems

@article{Mehrabian2017TimestampTL, title={Timestamp Temporal Logic (TTL) for Testing the Timing of Cyber-Physical Systems}, author={Mohammadreza Mehrabian and Mohammad Khayatian and Aviral Shrivastava and John C. Eidson and Patricia Derler and Hugo A. Andrade and Ya-Shian Li-Baboud and Edward R. Griffor and Marc A. Weiss and Kevin B. Stanton}, journal={ACM Transactions on Embedded Computing Systems (TECS)}, year={2017}, volume={16}, pages={1 - 20} }

In order to test the performance and verify the correctness of Cyber-Physical Systems (CPS), the timing constraints on the system behavior must be met. Signal Temporal Logic (STL) can efficiently and succinctly capture the timing constraints of a given system model. However, many timing constraints on CPS are more naturally expressed in terms of events on signals. While it is possible to specify event-based timing constraints in STL, such statements can quickly become long and arcane in even…

## 15 Citations

### An Efficient Timestamp-Based Monitoring Approach to Test Timing Constraints of Cyber-Physical Systems

- Computer Science2018 55th ACM/ESDA/IEEE Design Automation Conference (DAC)
- 2018

An online approach, based on Timestamp Temporal Logic (TTL), for monitoring the timing constraints in CPS is presented, which reduces the computation and memory requirements by processing the timestamps of pertinent events reducing the need to capture the full data set from the signal sampling.

### Extending Signal Temporal Logic with Quantitative Semantics by Intervals for Robust Monitoring of Cyber-physical Systems

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### TickTalk - Timing API for Dynamically Federated Cyber-Physical Systems

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The notion of dynamically federated islands of variable-precision synchronization and coordinated entities through synergistic activities at the language, system, network, and device levels is developed.

### EC.LANG – A Language for Specifying Response Time Analyses of Event Chains

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A compiler and an evaluation engine based on EC.LANG, a formal language designed to specify evaluations over measurement data, are presented, particularly fitted to model event chains representing the data flow of system functions.

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This paper proposes a space and time-aware technique to manage intersections of CAVs that is robust against external disturbances and model mismatches, and can achieve 2.7X better throughput on average compared to velocity assignment techniques.

### Worst-case Satisfaction of STL Specifications Using Feedforward Neural Network Controllers: A Lagrange Multipliers Approach

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A reinforcement learning approach for designing feedback neural network controllers for nonlinear systems is proposed based on a max-min formulation of the robustness of the STL formula.

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