Incubation Chamber Temperature Controller Design and Simulation

2015 ◽  
Vol 738-739 ◽  
pp. 1003-1006
Author(s):  
Zheng Jie Lu ◽  
Yin Jun Zhang
Keyword(s):  
Field Experiments ◽  
Algorithm Design ◽  
Stability Control ◽  
System Response ◽  
Practical Result ◽  
Temperature Controller ◽  
Incubation Chamber ◽  
Control Precision ◽  
Chamber Temperature ◽  
Simulation Results

The traditional incubation chamber temperature PID control system has poor stability, control precision results are poor, not adjust the PID parameters and other issues, this paper presents a way to use Darling algorithm design incubation chamber temperature controller scheme, and introduced this system controller algorithm design steps, simulation results, and conducting field experiments. Simulation results show that the practical result table control method overshoot, settling time shortened, and can effectively improve system response speed and control precision.

Multi-layer controller with state-constraint: Vehicle lateral stability control based on fuzzy logic

2021 ◽  
pp. 095440702110142
Author(s):  
Neng Wan ◽  
Guangping Zeng ◽  
Chunguang Zhang ◽  
Dingqi Pan ◽  
Songtao Cai
Keyword(s):  
Control System ◽  
Integrated Control ◽  
State Constraint ◽  
Stability Control ◽  
Lateral Stability ◽  
System A ◽  
Velocity Reduction ◽  
Vehicle Velocity ◽  
Allowable Range ◽  
Simulation Results

This paper deals with a new state-constrained control (SCC) system of vehicle, which includes a multi-layer controller, in order to ensure the vehicle’s lateral stability and steering performance under complex environment. In this system, a new constraint control strategy with input and state constraints is applied to calculate the steady-state yaw moment. It ensures the vehicle lateral stability by tracking the desired yaw rate value and limiting the allowable range of the side slip. Through the linkage of the three-layer controller, the tire load is optimized and achieve minimal vehicle velocity reduction. The seven-degree-of-freedom (7-DOF) simulation model was established and simulated in MATLAB to evaluate the effect of the proposed controller. Through the analysis of the simulation results, compared with the traditional ESC and integrated control, it not only solves the problem of obvious velocity reduction, but also solves the problem of high cost and high hardware requirements in integrated control. The simulation results show that designed control system has better performance of path tracking and driving state, which is closer to the desired value. Through hardware-in-the-loop (HIL) practical experiments in two typical driving conditions, the effectiveness of the above proposed control system is further verified, which can improve the lateral stability and maneuverability of the vehicle.

Intelligent Information of TS Fuzzy PID Control System of BLDCM

2013 ◽  
Vol 846-847 ◽  
pp. 313-316 ◽  
Author(s):  
Xiao Yun Zhang
Keyword(s):  
Control System ◽  
Dynamic Model ◽  
Pid Control ◽  
Control Method ◽  
Design Method ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Control Precision ◽  
Simulation Results ◽  
Intelligent Information

This paper presented a new method based on the Fuzzy self - adaptive PID for BLDCM. This method overcomes some defects of the traditional PID control. Such as lower control precision and worse anti - jamming performance. It dynamic model of BLDCM was built, and then design method for TS fuzzy PID model is given, At last, it compared simulation results of PID control method with TS Fuzzy PID control method. The results show that the TS Fuzzy PID control method has more excellent dynamic antistatic performances, as well as anti-jamming performance. The experiment shows that TS fuzzy PID control has the stronger adaptability robustness and transplant.

Mixed H∞/H2 Output Feedback Stability Control for Dual-Motor Independent Drive Electric Vehicle

2013 ◽  
Vol 658 ◽  
pp. 602-608 ◽  
Author(s):  
Cheng Lin ◽  
Chun Lei Peng
Keyword(s):  
Electric Vehicle ◽  
Output Feedback ◽  
Stability Control ◽  
Vehicle Stability ◽  
Robust Performance ◽  
Output Feedback Controller ◽  
Vehicle Stability Control ◽  
Feedback Stability ◽  
Simulation Results ◽  
Yaw Moment

This paper presents the design of mixed H∞/H2Output Feedback Controller for Independent Drive Electric Vehicle Stability Control. It generates yaw moment by applying driving intervention at front Independent driving wheels according to the vehicle states. The performance of the proposed controller is evaluated through a series of simulations under different velocity and different mass. The simulation results show that the controller can help vehicle against a certain range of uncertainty (speeds and loads) and get excellent robust performance.

scholarly journals Coordinated Stability Control Strategy for Intelligent Electric Vehicles Using Vague Set Theory

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Yilin He ◽  
Jian Ma ◽  
Xuan Zhao ◽  
Ruoyang Song ◽  
Xiaodong Liu ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Control Strategy ◽  
Coordinated Control ◽  
Stability Control ◽  
Lateral Acceleration ◽  
Vague Set ◽  
Yaw Rate ◽  
Stability Performance ◽  
Control Target ◽  
Simulation Results

Aiming at improving the tracking stability performance for intelligent electric vehicles, a novel stability coordinated control strategy based on preview characteristics is proposed in this paper. Firstly, the traditional stability control target is introduced with the two degrees of freedom model, which is realized by the sliding mode control strategy. Secondly, an auxiliary control target further amending the former one with the innovation formulation of the preview characteristics is established. At last, a multiple purpose Vague set leverages the contribution of the traditional target and the auxiliary preview target in various vehicle states. The proposed coordinated control strategy is analyzed on the MATLAB/CarSim simulation platform and verified on an intelligent electric vehicle established with A&D5435 rapid prototyping experiment platform. Simulation and experimental results indicate that the proposed control strategy based on preview characteristics can effectively improve the tracking stability performance of intelligent electric vehicles. In the double lane change simulation, the peak value of sideslip angle, yaw rate, and lateral acceleration of the vehicle is reduced by 13.2%, 11.4%, and 8.9% compared with traditional control strategy. The average deviations between the experimental and simulation results of yaw rate, lateral acceleration, and steering wheel angle are less than 10% at different speeds, which demonstrates the consistency between the experimental and the simulation results.

scholarly journals Modeling and Precise Processing for Spaceborne Transmitter/Missile-Borne Receiver SAR Signals

2019 ◽  
Vol 11 (3) ◽  
pp. 346 ◽  
Author(s):  
Shiyang Tang ◽  
Ping Guo ◽  
Linrang Zhang ◽  
Chunhui Lin
Keyword(s):  
Geometric Model ◽  
Algorithm Design ◽  
Cross Coupling ◽  
Synthetic Aperture ◽  
Hybrid Domain ◽  
Geometric Configurations ◽  
Proposed Model ◽  
Sar Model ◽  
Simulation Results ◽  
Path Constraint

The spaceborne transmitter/missile-borne receiver (ST/MR) synthetic aperture radar (SAR) could provide several unique advantages, such as wide coverage, unrestricted geography, a small detection probability of the missile, and forward-looking imaging. However, it is also accompanied by problems in imaging, including geometric model establishment and focusing algorithm design. In this paper, an ST/MR SAR model is first presented and then the flight-path constraint, characterized by geometric configurations, is derived. Considering the impacts brought about by the maneuvers of the missile, a non-‘Stop-Go’ mathematical model is devised and it can avoid the large errors introduced by the acceleration, which is neglected in the traditional model. Finally, a two-dimensional (2-D) scaling algorithm is developed to focus the ST/MR data. Without introducing any extra operations, it can greatly remove the spatial variations of the range, azimuth, and cross-coupling phases simultaneously and entirely in the 2-D hybrid domain. Simulation results verify the effectiveness of the proposed model and focusing approach.

Simulation Results from a Model of a Tractor Trailer Vehicle Equipped with Roll Stability Control

2010 ◽  
Author(s):  
Santhosh Chandrasekharan ◽  
Dennis A. Guenther ◽  
Gary J. Heydinger ◽  
Mohamed Kamel Salaani ◽  
Scott Bradley Zagorski ◽  
...  
Keyword(s):  
Stability Control ◽  
Simulation Results

Load-Balanced Low-Power Routing Algorithm Design for Wireless Sensor Networks

2014 ◽  
Vol 926-930 ◽  
pp. 3641-3644
Author(s):  
Bo He
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Power Consumption ◽  
Low Power ◽  
Routing Algorithm ◽  
Algorithm Design ◽  
Wireless Sensor ◽  
Load Factor ◽  
Simulation Results ◽  
Load Balanced

Low-power wireless sensor networks (WSNs) design involves all aspects of research in wireless sensor networks. As energy is limited in wireless sensor networks, how to effectively manage and use energy of WSNs, and how to maximize the reduction of power consumption in WSNs and extend the lifetime of WSNs become a key problem faced by wireless sensor networks. Aimed at these problems, a low-power clustering routing algorithm based on load-balanced is proposed. The algorithm introduced an energy load factor to reduce the power consumption of WSNs. The simulation results show that the low-power routing algorithm can effectively reduce power consumption of networks and extend the lifetime of networks.

scholarly journals Design of Stable Controller for Flexible Solar Panel by H∞ Loop-Shaping Method

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Dini Wang ◽  
Fanwei Meng ◽  
Shengya Meng ◽  
Aiping Pang
Keyword(s):  
Essential Role ◽  
Weighting Function ◽  
Control Design ◽  
Response Speed ◽  
Solar Panel ◽  
Flexible Systems ◽  
Solar Panels ◽  
Control Precision ◽  
Loop Shaping ◽  
Simulation Results

Flexible solar panels play an essential role in the field of aerospace. However, many difficulties appear in the control design due to the existence of a weakly damped resonance module. The design for flexible systems often causes an unstable controller so that the systems after design still have trouble in putting into practice. We adopt H∞ loop-shaping design and put forward a directive method for selecting the weighting function. The simulation results indicate that system bandwidth is optimized based on the stable controller. In this way, the control precision and response speed of the system are improved. In the meantime, the system is easy to put into use.

AN EXPERIMENTAL STUDY OF SEMICONDUCTOR PROCESS CHILLER USING INDIVIDUAL AND DUAL COMPRESSOR METHOD

2011 ◽  
Vol 19 (03) ◽  
pp. 195-201 ◽  
Author(s):  
DONG AN CHA ◽  
OH KYUNG KWON ◽  
MYUNG DO OH
Keyword(s):  
Experimental Study ◽  
Power Consumption ◽  
Cooling Capacity ◽  
New Model ◽  
Excessive Heat ◽  
Precise Control ◽  
Control Precision ◽  
Chamber Temperature ◽  
High Power Consumption ◽  
Operation Control

Excessive heat occurs during the semiconductor manufacturing process. Thus, precise control of temperature is required to maintain constant chamber temperature and also wafer temperature in the chamber. Compared to an industrial chiller, a semiconductor chiller's power consumption is very high due to its continuous operation for a year. Considering the high power consumption, it is necessary to develop an energy efficient chiller by optimizing operation control. Therefore, in this study, a semiconductor chiller is experimentally investigated to suggest an energy-saving direction by conducting load change, controlling the temperature's rise and fall and controlled precision experiments. The experimental study shows how the cooling capacity of new model chiller rises over 30% compared to the old model chiller. The time and power consumption in the temperature rising experiments are 43 min and 8.4 kWh, respectively. The control precision is the same as ± 1°C, at 0°C, in any case. However, it appears that the new model channel's control precision improves to ± 0.5°C when the setting temperature is over 30°C.

Research on Generator Tripping Value of Security and Stability Control

2014 ◽  
Vol 494-495 ◽  
pp. 1795-1800
Author(s):  
Hui Ping Zheng ◽  
Yu Long Yang ◽  
Shu Yong Song ◽  
Xin Yuan Liu ◽  
Min Xue ◽  
...  
Keyword(s):  
Steady State ◽  
Theoretical Analysis ◽  
Transmission Line ◽  
Stability Limit ◽  
Stability Control ◽  
Control Measures ◽  
Equal Area ◽  
Simulation Results ◽  
Steady State Stability

In this paper, the problem of the excessive generator tripping value of security and stability control after occurrence of the N-2 fault in the Shentou-Yantong transmission line of Shanxi DaTong Regional grid is studied. And the principle of security and stability control measures based on equal area criterion is analyzed. The reason leading to excessive generator-tripping value of security and stability control after the occurrence of the N-2 fault in Shentou-Yantong region is figured out, and it is that the steady-state stability limit of transmission section decreases and the accelerator power cannot be released. Finally, the results of theoretical analysis are verified by simulations. The simulation results indicate that too large generator-tripping value of security and stability control is mainly caused by decrease of the steady-state stability limit of the transmission section after occurrence of the fault in Datong. The conclusions in the paper have referential significance for the study on similar power concentrated send-out systems.

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