Research on FPGA Based Closed-Loop Motion Control System

2011 ◽  
Vol 121-126 ◽  
pp. 4613-4618
Author(s):  
Zong Min Chen ◽  
San Nan Yuan
Keyword(s):  
Control System ◽  
Motion Control ◽  
Closed Loop ◽  
Control Unit ◽  
Open Loop ◽  
Control Logic ◽  
Motion Control System ◽  
Loop Control ◽  
Stepper Motors ◽  
Loop Motion

This paper presents a Field Programmable Gate Array based closed-loop motion control system for stepper motors. It consists of three components, including closed-loop control unit, driving unit and feedback unit. To overcome some of the drawbacks with an open-loop stepper motor motion control system or a conventional servo system, a self adaptive algorithm is proposed. By detecting the difference between the command and feedback signals, measures are taken prior to the occurrence of loss synchronization. All of the control logic is implemented in one FPGA chip. Simulation and testing results are presented at the end of this paper.

Study on Twin-Rotary Motion Control System Based on Siemens Technology CPU

2012 ◽  
Vol 229-231 ◽  
pp. 2201-2204
Author(s):  
Cun Hai Pan ◽  
Hui Li ◽  
Su Mei Du ◽  
Wei Gao
Keyword(s):  
Control System ◽  
Motion Control ◽  
Rotary Motion ◽  
Three Dimension ◽  
Motion Control System ◽  
Loop Control ◽  
Closed Loop Control System ◽  
Loop Control System ◽  
Dimension Space ◽  
The Cost

A twin-rotary motion control system was built based on a cam technology and Siemens S7-300T PLC in this paper. The system can position accurately in a three-dimension space using a twin-servo closed loop control system and can real-time monitor various parameters of positioning system by HMI (Human Machine Interface). It also can automatically collect various parameter information and judge the type of fault.At the same time, the degree of automation has been raised and the cost of production was reduced.

Tangible Programming for Basic Control System New Frameworks to Engineering Education for Children

2014 ◽  
Vol 931-932 ◽  
pp. 1298-1302
Author(s):  
Thiang Meadthaisong ◽  
Siwaporn Meadthaisong ◽  
Sarawut Chaowaskoo
Keyword(s):  
Control System ◽  
Engineering Education ◽  
Control Systems ◽  
Primary Schools ◽  
Closed Loop ◽  
Open Loop ◽  
Closed Loop Control ◽  
College Level ◽  
Loop Control ◽  
Tangible Programming

Programming control in industrial design is by its nature expert upon an example being Programmable Logic Controller (PLC). Such programmes are unsuitable for children or novices as they cannot understand how to use the programme. This research seeks to present tangible programming for a basic control system in new frameworks in engineering education for children. Such programmes could be for use in kindergartens, primary schools or general teaching where knowledge about basic control is required. Normally open-loop and closed-loop control system programming is taught at university and college level. This may be late as far as acquiring knowledge of basic control systems is concerned. Using tangible programming without a computer but instructions and interface, relay and motor could result in children in kindergartens and primary schools being able to programme open-looped control systems which mix chemicals or closed-loop control systems which control conveyor belts. However, the children would not be able to undertake programming using programmable control in a similar scenario.

Experimental Study of Landing Gear Simulation Test-Bed

2014 ◽  
Vol 1030-1032 ◽  
pp. 1181-1184
Author(s):  
Miao Shang ◽  
Guo Min Lin ◽  
Wen Guang Zhang ◽  
Fei Zhou
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Test System ◽  
Open Loop ◽  
Landing Gear ◽  
Test Bed ◽  
Simulation Test ◽  
Loop Control ◽  
System Experiment ◽  
Loop Control System

The basic composition of the landing gear simulator test-bed is discussed; The open loop control system experiment, closed-loop light control system experiment, the closed loop load control system are completed for the test system; The reliability and stability of test-bed system are validated by the experiment; The technical indexes of the landing gear simulation test-bed and the design requirement of electric control system are validated.

Robustness for Intelligent Tooling While Forming Shallow Aluminum Pans

2012 ◽  
Vol 134 (5) ◽  
Author(s):  
William J. Emblom
Keyword(s):  
Control System ◽  
Design Process ◽  
Closed Loop ◽  
Open Loop ◽  
Closed Loop Control ◽  
Blank Holder ◽  
Loop Control ◽  
Stamp Forming ◽  
Tooling Design ◽  
Process Disturbances

This study examines the robustness of stamp forming tooling. An oval pan was formed using tooling that included a flexible blank holder, active draw beads, and closed-loop control of both wrinkling and local punch forces. The results were compared to open-loop tests using the same tooling and earlier work that utilized tooling that produced similar pans but included a rigid blank holder. For the current study, robustness was defined as the ability to delay wrinkling or tearing. A description of the tooling design process is provided as well as a synopsis of the development of the control system for the tooling. Open-loop and closed-control tests using AL 6111-T4 blanks were performed in order to evaluate the ability to reject process disturbances and demonstrate improved robustness of the tooling. During open-loop tests, the current tooling was shown to be more robust than the earlier tooling with the rigid blank holder. Control of wrinkling eliminated one form of part failure while closed-loop control of local punch forces significantly improved the robustness of the tooling by delaying tearing.

scholarly journals Closing the Loop: Implementing Real-time Audio Feedback Systems in Musical Robots

2021 ◽  
Author(s):  
◽  
Jason Long
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Open Loop ◽  
Feedback Systems ◽  
Cruise Control ◽  
Audio Feedback ◽  
Loop Control ◽  
Manual Intervention ◽  
Closed Loop Control System ◽  
Loop Control System

<p>A closed-loop control system is any configuration that feeds information about its output back into the control stream. These types of systems have been in use for hundreds of years in various engineering related disciplines to carry out operations such as keeping rooms at the correct temperature, implementing cruise control in cars, and precisely positioning industrial machinery. When a musician performs a piece, a type of biological closed loop is invoked in which the player continuously listens to the sound of their instrument, and adjusts their actions in order to ensure their performance is as desired.  However, most musical robots do not possess this ability, instead relying on open-loop systems without feedback. This results in the need for much manual intervention from the operators of these robots, unintuitive control interfaces for composing and performing music with them, and tuning, timing, dynamics and other issues occurring during performances.  This thesis investigates applying closed-loop audio feedback techniques to the creation of musical robots to equip them with new expressive capabilities, interactive applications, musical accuracy, and greater autonomy. In order to realise these objectives, following an investigation of the history of musical automata and musical robotic control systems, several new robotic musical instruments are developed based on the principals of utilising embedded musical information retrieval techniques to allow the instruments to continuously ‘listen’ to themselves while they play.  The mechanical and electronic systems and firmware of a closed-loop glockenspiel, a modular unpitched percussion control system, and a robotic chordophone control system are described in detail, utilising new software and hardware created to be accessible to electronic artists. The novel capabilities of the instruments are demonstrated both through quantitative evaluations of the performance of their subsystems, and through composing original musical works specifically for the instruments. This paradigm shift in musical robotic construction paves the way for a new class of robots that are intuitive to use, highly accurate and reliable, and possess a unique level of musical expressiveness.</p>

scholarly journals The Effect of the Closed-Loop Control System on Blood Glucose Control With Exercise: A Critically Appraised Topic

2021 ◽  
pp. 1-4
Author(s):  
Melanie A. Mason ◽  
Anne C. Russ ◽  
Ryan T. Tierney ◽  
Jamie L. Mansell
Keyword(s):  
Control System ◽  
Blood Glucose ◽  
Closed Loop ◽  
Loop Group ◽  
Open Loop ◽  
Loop Control ◽  
Closed Loop Control System ◽  
Loop Control System ◽  
The Ideal

Context: Exercise can cause fluctuations in blood glucose control in type 1 diabetics. For athletes with type 1 diabetes, maintenance of blood glucose within an ideal range may be difficult. Objective: To determine, in individuals with type 1 diabetes, the effectiveness of the closed loop control system versus the open loop control system in keeping blood glucose levels in the ideal range with exercise. Data Sources: A search of PubMed was conducted in June of 2020 using the Boolean phrases: (closed loop control system OR artificial pancreas) AND type 1 diabetes AND exercise AND ideal range AND adolescents, artificial pancreas AND glucose prediction AND exercise. Study Selection: Titles were reviewed for relevance, the abstract was then assessed for applicability, and finally the full text was examined. Articles were included that examined the percent of time in the ideal blood glucose range when exercise occurred during that day. Articles were excluded that didn’t compare the closed loop and open loop control systems and articles that did not involve exercise. Data Extraction: The PEDro scale was used to determine the methodological quality of the included studies. The measure addressed was the percent of time in the ideal blood glucose range of 70-180 mg/dL. 95% Confidence Intervals and Cohen’s D were calculated for each article. Data Synthesis: The search yielded 268 articles and 3 were selected for inclusion. The two randomized controlled trials scored 9/10 on the PEDro scale and the randomized two-arm crossover clinical trial scored 9/10 on the PEDro scale. Percent time spent in the ideal blood glucose range when exercise was performed was significantly higher in the closed loop group versus the open loop group in each of the three studies. In one randomized control trial, mean time in the ideal range was 71.3% (SD = 17.6, 95% CI = 62.5, 80.10) in the closed loop group versus 64.7% (SD = 13.3, 95% CI = 58.1–71.4) in the open loop group. Cohen’s D was 0.4. In the second randomized control trial, mean time in the ideal range was 73.5% (SD = 8.4, 95% CI = 70.1, 76.9) for the closed loop group versus 50% (SD = 26.8, 95% CI = 39.1, 60.9). Cohen’s D was 1.2. The two-arm crossover clinical trial resulted in a mean time in target range of 84.1% (SD = 11.5, 95% CI = 79.0, 89.2) in the closed loop group versus 68.7% (SD = 13.9, 95% CI = 62.5, 74.9) in the open loop group. Cohen’s D was 1.2. Conclusions: For adolescents with type 1 diabetes who exercise, the closed loop control system maintains blood glucose levels in the ideal range for a longer percent of time versus an open loop system. Each patient should be evaluated on a case-by-case basis with his/her healthcare team. Future research should examine the closed loop control system on specific energy systems.

scholarly journals Closing the Loop: Implementing Real-time Audio Feedback Systems in Musical Robots

2021 ◽  
Author(s):  
◽  
Jason Long
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Open Loop ◽  
Feedback Systems ◽  
Cruise Control ◽  
Audio Feedback ◽  
Loop Control ◽  
Manual Intervention ◽  
Closed Loop Control System ◽  
Loop Control System

<p>A closed-loop control system is any configuration that feeds information about its output back into the control stream. These types of systems have been in use for hundreds of years in various engineering related disciplines to carry out operations such as keeping rooms at the correct temperature, implementing cruise control in cars, and precisely positioning industrial machinery. When a musician performs a piece, a type of biological closed loop is invoked in which the player continuously listens to the sound of their instrument, and adjusts their actions in order to ensure their performance is as desired.  However, most musical robots do not possess this ability, instead relying on open-loop systems without feedback. This results in the need for much manual intervention from the operators of these robots, unintuitive control interfaces for composing and performing music with them, and tuning, timing, dynamics and other issues occurring during performances.  This thesis investigates applying closed-loop audio feedback techniques to the creation of musical robots to equip them with new expressive capabilities, interactive applications, musical accuracy, and greater autonomy. In order to realise these objectives, following an investigation of the history of musical automata and musical robotic control systems, several new robotic musical instruments are developed based on the principals of utilising embedded musical information retrieval techniques to allow the instruments to continuously ‘listen’ to themselves while they play.  The mechanical and electronic systems and firmware of a closed-loop glockenspiel, a modular unpitched percussion control system, and a robotic chordophone control system are described in detail, utilising new software and hardware created to be accessible to electronic artists. The novel capabilities of the instruments are demonstrated both through quantitative evaluations of the performance of their subsystems, and through composing original musical works specifically for the instruments. This paradigm shift in musical robotic construction paves the way for a new class of robots that are intuitive to use, highly accurate and reliable, and possess a unique level of musical expressiveness.</p>

Research on the Control System of Ecological Architecture

2012 ◽  
Vol 174-177 ◽  
pp. 3196-3201
Author(s):  
Bo Xia
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Open Loop ◽  
Closed Loop Control ◽  
Open Loop Control ◽  
Loop Control ◽  
Closed Loop Control System ◽  
Loop Control System ◽  
Ecological Architecture ◽  
Building Control System

This paper proceeds from the basic conceptions of systematology and cybernetics and researches ecological architecture from one new angle. The paper divides the building control system into the open-loop control system and closed-loop control system, and further researches their principles.

Control System Design Based on CANopen Network for Multi-Legged Robot with Hand-Fused Foot

2010 ◽  
Vol 42 ◽  
pp. 307-312 ◽  
Author(s):  
Yu Xiao Zhang ◽  
Xian Qun Zeng ◽  
Xin Jie Wang
Keyword(s):  
Communication Network ◽  
Control System ◽  
System Design ◽  
Motion Control ◽  
Closed Loop ◽  
Reliability And Validity ◽  
Control System Design ◽  
Closed Loop Control ◽  
Legged Robot ◽  
Loop Control

In this paper, a distributed motion control system is designed and achieved for the modular multi-legged robot with hand-fused foot based on CANopen network. A communication network is built among modules and joints through CANopen network. Controllers and encoders are used to achieve closed-loop control for each joint. The system has completed real-time multi-jointed linkage. Moreover, experimental results have proved the reliability and validity of this control system.

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