{"title":"Comparison of Constant PID Controller and Adaptive PID Controller via Reinforcement Learning for a Rehabilitation Robot","authors":"Bradley R.G. Beck, J. Tipper, S. Su","doi":"10.1109/ANZCC56036.2022.9966949","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966949","url":null,"abstract":"Effectively tuning a PID controller can be difficult without prior experience or knowledge of the system being controlled. Reinforcement learning is a tool that allows automatic PID tuning with adaptability to environmental change. This technique was utilised for a single degree-of-freedom robot designed for human interaction, proving the validity of the TD3PG algorithm for reference tracking and rehabilitation exercises. These results were measured by the root mean square error of the system and compared to a classical PID controller to determine whether the adaptability improved the system tracking ability. Results showed the classical PID controller resulted in smaller RMSE measurements for a multitude of input signals including sine waves and multi-step functions when the environment remained constant. The adaptive PID controller resulted in smaller RMSE measurements for all input signals when the environment changed to reduce the amount of torque applied to the plant, representing a motor power failure. It is believed that a classic PID controller is better suited for systems with low input frequency and low system uncertainty while adaptive PID controllers are better for systems with changing environments or input signals.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121406280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Robust Control of Adaptive Model Predictive Control using Online Model Estimation","authors":"M. R. Mariya, V. ShashankS., M. Mamta","doi":"10.1109/ANZCC56036.2022.9966969","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966969","url":null,"abstract":"In recent years, designing an adaptive model predictive controller (AMPC) with varying nonlinear plant parameters in real-time has been a challenging problem. Estimating the model parameters under real-time variations require sufficiently excited signal. Hence, this paper proposes an online model estimation technique for adaptive model predictive control (AMPC) using Recursive Polynomial Model Estimator (RPME). Parameters of the system are continuously varied during real-time to validate the robustness of the controller. Linear plant model parameters are estimated online using RPME and fed to the adaptive model predictive controller to compute the control laws with reference to the step signal. Real-time simulation for nonlinear system response has been conducted using AMPC on Van Der Pol oscillator and Inverted Pendulum System.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126918861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Time-domain Approach to the 3-omega Heat Conductivity Measurement Method","authors":"J. Bendtsen, J. Leth, C. Kallesøe","doi":"10.1109/ANZCC56036.2022.9966983","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966983","url":null,"abstract":"The so-called \"3ω method\" is a well established method to measure heat conductivity of solids. It is a frequency-based method, in which the ratio between the first and third harmonics of an induced voltage in an electric heater element can be shown to be (inversely) proportional to the thermal conductivity of a solid that the heater is in direct contact with. Commonly, the method utilizes Discrete Fourier analysis in an off-line setting, which is of course perfectly valid when measuring material properties in a static setting.In this paper we propose to make use of the measurement principle in a dynamic setting. We propose a novel timedomain approach to 3ω measurement, which can easily be implemented in a cheap micro-controller due to its modest memory and sampling rate requirements, and therefore likely to be useful for feedback in control loops or similar applications.The approach comprises two main elements, a discrete-time signal generator, which provides a steady-state sinusoidal current output, and a standard Luenberger-style state observer designed to estimate the associated third harmonic in the presence of noisy voltage measurements. We prove that the signal generator is robust to numerical inaccuracies. The approach is tested in simulation and on actual laboratory data, showing good agreement with traditional off-line analysis.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124310360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Discrete Fruit Fly Optimization Algorithm for Disassembly Line Balancing Problems by Considering Human Worker’s Learning Effect","authors":"Jianping Wang, Xiwang Guo, Mengchu Zhou, Jiacun Wang, Shujin Qin, Liang Qi","doi":"10.1109/ANZCC56036.2022.9966961","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966961","url":null,"abstract":"The recycling of discarded products is an integral part of resource utilization. A disassembly line balancing problem (DLBP) concerns the recycling and remanufacturing process of end-of-life (EOL) products. Disassembly time is affected by many factors, e.g., the precedence relationships among disassembly tasks, and the skills and learning abilities of disassembly workers. In this paper, we use Petri nets to specify a disassembly process and establish a mixed integer programming model to describe DLBP that considers the learning effect of human workers. We then propose a discrete fruit fly optimization algorithm to solve the proposed problem. By comparing its experimental results with other intelligent optimization algorithms’, its efficiency is verified.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121833161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Remarks on a Commutative Quaternion Neural Network–based Controller and Its Application in Controlling a Robot Manipulator","authors":"Kazuhiko Takahashi, Daiki Kawamoto, Tomoaki Naba, Hirotaka Okamoto, Tomoki Onodera, M. Hashimoto","doi":"10.1109/ANZCC56036.2022.9966947","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966947","url":null,"abstract":"This study examines the possibility of using a commutative quaternion neural network in control system applications. A multi-layer commutative quaternion neural network and its training algorithm are derived and the network is applied to develop a feedforward-feedback controller, with the network input consisting of a reference output and some tapped-delay input-output sets of the controlled plant while the network output is employed to synthesise the control input. Training of the commutative quaternion neural network in the control system is conducted in real-time by integrating feedback error learning. To evaluate the effectiveness of a commutative quaternion neural network-based controller, computational experiments on trajectory tracking control of a three-link robot manipulator are conducted. Simulation results show the suitability of the commutative quaternion neural network for controlling the robot manipulator and the characteristics of the commutative quaternion neural network-based controller are clarified when compared with those of a quaternion neural network-based controller.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122649169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"End Effector Position Control of Pantograph Type Robot Using Sliding Mode Controller","authors":"Muhammad Khairul Ali Hassan, Z. Cao, Z. Man","doi":"10.1109/ANZCC56036.2022.9966971","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966971","url":null,"abstract":"The current era of technological advancements in real time control systems where the controller mostly functions in closed-loop domain, the convergence speed of plant depends on the robustness of controller. In various sectors like in space engineering, robotics, agriculture sector, energy and mining industry, automation and advance manufacturing, a robust controller is indispensable. Sliding mode controller (SMC) has proven to be a robust controller in case of external disturbances, nonlinearities, uncertainties and unmodeled system dynamics. In this research paper, SMC has been designed to control the end effector of a two degree of freedom (2DOF) pantograph type robot (PTR) and desired tracking has been achieved. PTR consists of two identical servo motors and a chain like four links that are driven to control the end effector position. Moreover, a switching term has also been proposed and simulation shows faster convergence and improved tracking. Simulation studies have been carried out in MATLAB/Simulink.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127677358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Test Case Study of High-Speed Railway Train Control System for Typical Operation Scenarios*","authors":"F. Zhu, Shixiang Li, Fei Li, Yuan Cheng","doi":"10.1109/ANZCC56036.2022.9966951","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966951","url":null,"abstract":"It is necessary to carry out functional test, equipment interconnection and interoperability verification and performance evaluation on the train control system before the deployment of the project. Combined with typical operation scenarios, the elements related to the scenarios are extracted based on existing simulation platform test scenarios, and the research on the relationship between typical scenarios and elements of railway operation train control system is carried out. The computational experiments based on typical scenarios and test cases are studied. Key technologies are analyzed, and test cases for typical operation scenarios are designed. The research can make the simulation process more targeted and the test results more valuable.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127937621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"H2 Controller Design for Multi-Agent Systems with Markovian Switching Topologies","authors":"Robert C. Ballam, A. Mcfadyen, D. Quevedo","doi":"10.1109/ANZCC56036.2022.9966964","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966964","url":null,"abstract":"This paper presents a H2 controller design method for discrete-time multi-agent systems with Markovian switching topologies using linear matrix inequalities (LMIs). The consensus problem is first reformulated as an equivalent error system, allowing for consensus error dynamics of general directed graph topologies to be considered. This error dynamic system is used in controller design, and it is shown how with appropriate constraints fundamental results from Markov jump linear systems literature may be used to design a distributed controller for the multi-agent system. Applying H2-norm control design ensures mean-square consensusability of the multi-agent system can be achieved while allowing for more intuitive controller design through selection of the performance function. Simulation results are provided to show the applicability of the proposed design method to switching general directed graphs and give an example of controller tuning with the proposed LMI problem.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123983274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Siamese Multi-Scale Aggregation Network for UAV Tracking*","authors":"Meiyu Yao, Na Wu, Shuo Hu, Hui Yu","doi":"10.1109/ANZCC56036.2022.9966962","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966962","url":null,"abstract":"The Siamese-based trackers have received much attention due to their great performance in the field of target tracking. However, it ignores the relationships and interdependencies between different features, impeding the robustness under various conditions. In addition, most Siamese-based trackers suffer from multiple special challenges, such as Fast Motion, Occlusion in UAV tracking. In this paper, we propose an anchor-free based object tracking algorithm with multi-scale aggregation Siamese Network. The proposed method consists of three parts: the feature extraction network, Encoder and Decoder. A multi-scale receptive field structure is designed in the encoder to deal with the problem of multi-scale change. The design of adaptive anchor in the decoder effectively reduces the relevant hyper-parameters. Experiments on three challenging UAV tracking benchmarks have demonstrated the robustness and effectiveness of the proposed method.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123460589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Interpretable Learning for Travel Behaviours in Cyber-Physical-Social-Systems","authors":"Hao Qi, Peijun Ye","doi":"10.1109/ANZCC56036.2022.9966975","DOIUrl":"https://doi.org/10.1109/ANZCC56036.2022.9966975","url":null,"abstract":"Interpretable learning is important for understanding human behavioral patterns in Cyber-Physical-Social-Systems (CPSS). It facilitates smart decision-makings of intelligent algorithms so that the management of such human-machine hybrid systems can be efficient and optimal. Unlike the big data driven transportation management, this paper introduces a new interpretable learning method using fuzzy logic to semantically extract travel behaviors. Computational experiments based on actual traffic data indicate that our method is able to generate explicit rules, and these rules can be used to predict traffic patterns very well.","PeriodicalId":190548,"journal":{"name":"2022 Australian & New Zealand Control Conference (ANZCC)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132504514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}