Qingchun Feng, Bowen Wang, Wanhao Zhang, Xiaoming Li
{"title":"Development and Test of Spraying Robot for Anti-epidemic and Disinfection in Animal Housing*","authors":"Qingchun Feng, Bowen Wang, Wanhao Zhang, Xiaoming Li","doi":"10.1109/WRCSARA53879.2021.9612617","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612617","url":null,"abstract":"In view of the high-intensity labor required to disinfect for anti-epidemic in the livestock and poultry house, an intelligent disinfection spraying robot system was designed. The robot system was composed of four parts, including a carrying vehicle, spraying unit, environmental sensors and a controller. Two operating modes were supported, fully automatic and remote control. For the low-light and less- irritation conditions in livestock and poultry house, a “Magnet-RFID” path detection navigation method was proposed to achieve autonomous movement along the livestock and poultry cages. The air-assisted liquid spray nozzle was designed to achieve simultaneous atomization and diffusion of the disinfectant liquid. A fluid dynamics simulation of the air flow field in the nozzle cavity was performed to optimize the structural parameters of its components. The inclination angles of the conical infusion block and the atomization grid were determined to be 75° and 90°, respectively. Finally, the robot’s navigation and spraying performance were tested in the livestock and poultry house. The experimental results showed that the robot’s vehicle could automatically navigate at the speed of 0.1~0.5 m/s, and the maximal deviation distance between the actual trajectory and the expected path was 50.8 mm. And the robot can spray liquid disinfectant at a flow rate of 200~400 mL/min, forming droplets with a diameter (DV.9) of 51.82~137.23 μm and a deposition density of 116–149 drop per cm2. The research could be a technical support for smart production in the livestock and poultry house.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124700231","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":"Research on dormancy and wake-up control strategy of Chang’e-4 lunar rover","authors":"Song Peng, Yang Jia, He Tian, Tianyi Zhang","doi":"10.1109/WRCSARA53879.2021.9612689","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612689","url":null,"abstract":"Chang’e-4 lunar rover is the first achievement of human exploration on the far side of the moon. New working environment brings challenges to the dormancy and wake-up of the lunar rover. The dormancy and wake-up constraints of the lunar rover are analyzed, including energy, thermal control, etc. Then combined with the complex terrain and relay communication, a dormancy and wake-up control strategy is designed for the lunar rover. The strategy includes skyline recognition, dormancy and wake-up time calculation, rover expected attitude calculation, sleeping position planning and moving, sleeping setting, wake-up setting and so on. Finally, the effectiveness of the control strategy is verified by the real on-orbit status.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"140 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125828686","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":"Simulation and application of magnesium alloy gap controller based on hybrid prediction model","authors":"Haixia Wang, Bing Zhang, Xiao Cheng, Jin Qiu","doi":"10.1109/WRCSARA53879.2021.9612681","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612681","url":null,"abstract":"The gap control system of magnesium alloy strip is characterized by nonlinear structure, time-varying parameters and large hysteresis. It is difficult to obtain satisfactory control effect by conventional control methods. This paper puts forward a kind of hybrid prediction optimization algorithm based on the grey prediction model GM(1, 1), combined with the advantages of the rolling optimization strategy. It overcomes the grey forecasting model dimension and effect of prediction step, gets more accurate dynamic rolling forecast data, makes up for the weakness of the thickness actuator and the lag of the detection mechanism. Furthermore, it uses Smith Prediction to replace in the steady-state rolling, so as to avoid the inaccuracy of the prediction value obtained by Gray Prediction Model entering after the steady state. This optimized algorithm not only makes up for the defects of the Gray Prediction Model, but also improves the accuracy of the prediction data. It can effectively improve the dynamic thickness and accuracy control through the field rolling.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"376 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115907571","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}
G. Jiang, Peng Wang, Shaobin Wei, Zhihui Tang, Yufang Wen, He Gao, Yong Tao
{"title":"A method for solving TSP of steel pylon inspection by magnetic adsorption robots based on improved ant colony optimization","authors":"G. Jiang, Peng Wang, Shaobin Wei, Zhihui Tang, Yufang Wen, He Gao, Yong Tao","doi":"10.1109/WRCSARA53879.2021.9612683","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612683","url":null,"abstract":"For the problem of multi-point inspection of steel pylons by robots for very large bridges, the input inspection path points are abstracted as nodes and the weight of each path point is calculated according to the actual situation of the project, so as to establish a weighted undirected graph of the movement of magnetic adsorption robots between each point. The original problem can then be transformed into the problem of finding the shortest possible path (the minimum cost) for each node in a given group, visiting each node once and returning to the origin, namely the traveling salesman problem (TSP). In this study, a path optimization method for magnetic adsorption robots for steel pylons based on an improved ant colony optimization (ACO) algorithm is proposed, and the Euclidean TSP is solved using the improved ACO approach (IACO). Finally, the simulation results demonstrate that IACO has advantages in convergence speed and stability as compared to conventional ACO, which proves the validity of the proposed method.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117196121","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}
Lina Chen, Yang Yang, Wendi Zhu, Mingsheng Li, Hongxi Guo
{"title":"Fault Detection of Stochastic Systems via Adaptive Event Triggering","authors":"Lina Chen, Yang Yang, Wendi Zhu, Mingsheng Li, Hongxi Guo","doi":"10.1109/WRCSARA53879.2021.9612674","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612674","url":null,"abstract":"In this paper, a fault detection strategy via the adaptive event-triggered scheme is proposed to solve the problem of stochastic systems fault detection under a class of network communication constraints with packet dropouts and time delays. The stochastic variable satisfying Bernoulli distribution is used to describe the packet dropout problem in network transmission channels, the adaptive event-triggered scheme with the dynamic change of the trigger threshold with the sampling information is designed to alleviate the network communication pressure and save the network communication resources. According to Lyapunov stability theory and linear matrix inequality, the existing condition of fault detection filter is obtained, and the expected requirements of the fault detection are satisfied under the premise of the stability of the fault detection model, the relevant parameters of the fault detection system are obtained by solving linear matrix inequality. Simulation results demonstrate the effectiveness of the method.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115334732","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}
Chaonan Zhang, Yuqing Cao, Shuzhang Liang, Lin Feng
{"title":"Micro vibrations-based Friction Reduction Evaluation of Guide Wire for Endovascular Interventional Application","authors":"Chaonan Zhang, Yuqing Cao, Shuzhang Liang, Lin Feng","doi":"10.1109/WRCSARA53879.2021.9612693","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612693","url":null,"abstract":"In endovascular interventional surgery, doctors usually experience high friction resistance when operating the guide wire in blood vessels, resulting from direct contact with vascular wall, which reduces operational efficiency. Improper operation can cause vascular injuries and reduce the surgical safety greatly, sometimes leading to the death of the patient. This paper presents a new method that applies radial micro vibrations at the proximal end of a conventional passive guide wire, to reduce the friction resistance. The mechanical model of guide wire vibration is established and the kinematics characteristics of the radial micro-vibration guide wire is analyzed, thus the drag reduction mechanism of guide wire assisted by ultrasonic vibration is obtained. The effect of proposed method on reducing the friction resistance is studied in the simulation blood vessel environment, and the influences of the applied vibration frequency on the friction force are investigated. The experimental study shows that the effect of exerted ultrasonic micro-vibration drag reduction is significant and the influence law is obvious. It offers a new thinking and way to improve the fluency and safety of vascular interventional surgery.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130848330","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}
Chunyuan Gan, Shuzhang Liang, Fenghui Wang, Yuqing Cao, Yiming Ji, J. Lina, Li Song, Lin Feng
{"title":"Non-contact Massively Parallel Manipulation of Micro-objects by Optoelectronic Tweezers*","authors":"Chunyuan Gan, Shuzhang Liang, Fenghui Wang, Yuqing Cao, Yiming Ji, J. Lina, Li Song, Lin Feng","doi":"10.1109/WRCSARA53879.2021.9612697","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612697","url":null,"abstract":"Optoelectronic tweezers (OET) system is a novel platform, by changing the projection pattern it can achieve the real-time precise control of the micro-objects. Due to its outstanding biocompatibility to cells and other biological materials, such as no damage, less heat generation, no contact and other characteristics, it has attracted wide attention in the field of micro-nano robots and micro-operation. Here we present a low power, high precision operation control method which can achieve a large operating range. Firstly, the properties of dielectrophoresis (DEP) force were calculated by using polarization theory and Maxwell stress tensor (MST) method, and the precise control of the single particle of polystyrene beads was completed by transforming and upgrading the projection light path and observation light path and using visual feedback control method. In addition, a custom-designed pattern scheme was used to achieve the rapid aggregation of polystyrene beads in a short time according to the image model and the classification of different particle sizes. This study provides a very effective technical method for precise single particle operation and large-scale parallel operation at micro-nano scale.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133336566","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}
Ning Wang, Xiaodong Zhang, Mingyang Li, Hongbing Zhang, Xiaojing Feng
{"title":"Improved Design and Dynamic Analysis of Ophthalmic Surgical Robot","authors":"Ning Wang, Xiaodong Zhang, Mingyang Li, Hongbing Zhang, Xiaojing Feng","doi":"10.1109/WRCSARA53879.2021.9612675","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612675","url":null,"abstract":"At present, manual peeling is often used in clinics to remove the inner limiting membrane around the macular hole to achieve the purpose of treatment. However, this method usually affects the quality of operation due to the small size of the eyeball, poor visibility, natural jitter of the doctor’s arm, and high mental stress during long-term operations. In this article, a 5 degrees of freedom(DOF) ophthalmic surgical robot with RCM (Remote Center of Motion) mechanism and a line-driven end effector to replace the pure manual operation mode were deeply designed to improve its design level and solve the problems in surgery. Then, on the basis of expounding the necessity and importance of dynamic analysis, the dynamic equations of the body structure and the end effector of the ophthalmic surgical robot were obtained. Finally, the range of motion, the maximum torque of the joint, the joint torque under the preset trajectory, and the torque changes of the end effector drive motor under different working conditions of the ophthalmic surgical robot are simulated and analyzed, which verifies the effectiveness of the improved design and mathematical modeling of the ophthalmic surgical robot. The research results are of great significance to guide the follow-up ophthalmic surgery robot motion shutdown control, standardized operation in the operation process and innovative structure design.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131997553","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}
Zakir Ullah, Chen Dixiao, Oksana Tovmachenko, Lin Feng
{"title":"Electromagnetic Actuation Based Swimming Robot with Semi-Flexible Fins","authors":"Zakir Ullah, Chen Dixiao, Oksana Tovmachenko, Lin Feng","doi":"10.1109/WRCSARA53879.2021.9612684","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612684","url":null,"abstract":"In this paper, A miniature (120 mm) bio-inspired underwater robot is presented which employs labriform or drag-based swimming and is capable of moving at an average speed of 2.7 cm/s (0.25 BL/s). The robot is equipped with a novel electromagnet-based actuator, and when coupled with a permanent magnet, it actuates the fins of the robot thus producing net propulsion. Traditional Contact-based actuators, that are employed for propulsion in the robots’ fins are prone to accidents and require waterproofing, hence a contactless actuator has been developed, which eliminates the need for waterproofing of the actuator and is best suited for underwater applications as the excess heat, generated by the electromagnets is dissipated into the surrounding water. A concave-shaped semi-flexible fin has been designed, which changes its geometry in recovery and power stroke to minimize the hydrodynamic drag force and increase the thrust. This reduced the design complexities of the robot and allowed more room for sensors and other equipment. The designed robot has the potential to form the basis for underwater swarm robots for exploration of seabed, natural resources, inspection of underwater cables, academic research and military applications.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128814490","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":"Event-triggered Global Adaptive Dynamic Programming for Multi-agent Consistency","authors":"Guangyue Zhao, Yang Yang, Jinrong Ma","doi":"10.1109/WRCSARA53879.2021.9612665","DOIUrl":"https://doi.org/10.1109/WRCSARA53879.2021.9612665","url":null,"abstract":"An algorithm based on event-triggered global adaptive dynamic programming is proposed for optimal control of multi-agent system consistency. The algorithm converts the multi-agent problem of consistency control to solving the Hamilton-Jacobi-Bellman equation of the optimal solution, and a method of the sum of squares iteration is used to calculate the optimal control strategy. The process of approximating the optimal control strategy and cost function by neural network training through a large number of basic functions is eliminated, to reduce the computation complexity of the system. By introducing event trigger conditions, the update times of the controller and actuator in the multi-agent system are reduced, and the frequency of information transmission between adjacent agents is also reduced. Using the optimal control theory and Lyapunov stability theory, the convergence of the system in a period of time after the event is triggered is analyzed. Finally, the effectiveness of the theoretical results is verified by MATLAB simulation.","PeriodicalId":246050,"journal":{"name":"2021 WRC Symposium on Advanced Robotics and Automation (WRC SARA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130006231","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}