efficient control
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2022 ◽  
Vol 134 ◽  
pp. 103476
Author(s):  
Tinu Vellamattathil Baby ◽  
Viranjan Bhattacharyya ◽  
Pouria Karimi Shahri ◽  
Amir H. Ghasemi ◽  
Baisravan HomChaudhuri

Author(s):  
Gulchehra Alimova ◽  
Isamiddin Siddikov

The paper deals with the creation of a mathematical model of the process of stretching the tape, taking into account the tension of the thread. For this purpose, the relationship between the thread tension and the speed of expression of the electric drives is determined. The proposed mathematical model of the process allows one to synthesize highly efficient control systems for spinning equipment.


2021 ◽  
Author(s):  
Han Zhang ◽  
Changzhi Zhou ◽  
Chunyan Wang ◽  
Wanzhong Zhao

Abstract This paper presents an energy efficient control strategy for electric vehicle (EV) driven by in-wheel-motors (IWMs) based on discrete adaptive sliding mode control (DASMC). The nonlinear vehicle model, tire model and the IWM model are established at first to represent the operation mechanism of the whole system. Based on the modeling, two virtual control variables are used to represent the longitudinal and yaw control efforts to coordinate the vehicle motion control. Then DASMC method is applied to calculate the required total driving torque and yaw moment, which can improve the tracking performance as well as the system robustness. According to the vehicle nonlinear model, the additional yaw moment can be expressed as a function of longitudinal and lateral tire forces. For further control scheme development, a tire force estimator using unscented Kalman filter is designed to estimate real-time tire forces. On these bases, energy efficient torque allocation method is developed to distribute the total driving torque and differential torque to each IWM, considering the motor energy consumption, the tire slip energy consumption and the brake energy recovery. Simulation results of the proposed control strategy using co-platform of Matlab/Simulink and CarSim® demonstrate that it can accomplish the vehicle motion control in a coordinated and economic way.


2021 ◽  
Vol 30 (4) ◽  
pp. 87-97
Author(s):  
Srikanth RAVIPATI ◽  
Venkatesan MANI ◽  
Srinivasa Rao YARLAGADDA

Author(s):  
Yu Rao ◽  
Xiaoyun Feng ◽  
Qingyuan Wang ◽  
Pengfei Sun ◽  
Zhuang Xiao ◽  
...  

Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2637
Author(s):  
Rafael Mendes ◽  
Sara Sario ◽  
João Pedro Luz ◽  
Natália Tassi ◽  
Cátia Teixeira ◽  
...  

Fire blight is a severe bacterial plant disease that affects important chain-of-value fruit trees such as pear and apple trees. This disease is caused by Erwinia amylovora, a quarantine phytopathogenic bacterium, which, although highly distributed worldwide, still lacks efficient control measures. The green revolution paradigm demands sustainable agriculture practices, for which antimicrobial peptides (AMPs) have recently caught much attention. The goal of this work was to disclose the bioactivity of three peptides mixtures (BP100:RW-BP100, BP100:CA-M, and RW-BP100:CA-M), against three strains of E. amylovora representing distinct genotypes and virulence (LMG 2024, Ea 630 and Ea 680). The three AMPs’ mixtures were assayed at eight different equimolar concentrations ranging from 0.25 to 6 μM (1:1). Results showed MIC and MBC values between 2.5 and 4 μM for every AMP mixture and strain. Regarding cell viability, flow cytometry and alamarBlue reduction, showed high reduction (>25%) of viable cells after 30 min of AMP exposure, depending on the peptide mixture and strain assayed. Hypersensitive response in tobacco plants showed that the most efficient AMPs mixtures and concentrations caused low to no reaction of the plant. Altogether, the AMPs mixtures studied are better treatment solutions to control fire blight disease than the same AMPs applied individually.


2021 ◽  
Author(s):  
Pietro Borrello ◽  
Daniele Cono D'Elia ◽  
Leonardo Querzoni ◽  
Cristiano Giuffrida

Viruses ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 2215
Author(s):  
Loulieta Nazerai ◽  
Søren Buus ◽  
Anette Stryhn ◽  
Allan Randrup Thomsen ◽  
Jan Pravsgaard Christensen

It is generally believed that a successful Zika virus (ZIKV) vaccine should induce neutralizing antibodies against the ZIKV envelope (E) protein to efficiently halt viral infection. However, E-specific neutralizing antibodies have been implicated in a phenomenon called antibody-dependent enhancement, which represents an ongoing concern in the flavivirus-vaccinology field. In this report, we investigated the vaccination potential of replication-deficient adenoviral vectors encoding the ZIKV non-structural proteins 1 and 2 (NS1/NS2) and employed the strategy of linking the antigens to the MHC-II associated invariant chain (li) to improve immunogenicity and by inference, the level of protection. We demonstrated that li-linkage enhanced the production of anti-NS1 antibodies and induced an accelerated and prolonged polyfunctional CD8 T cell response in mice, which ultimately resulted in a high degree of protection against ZIKV infection of the CNS.


Author(s):  
Sanailton De Lima Dias ◽  
Francisco Tavares Filho ◽  
André Luis Korzenowski ◽  
Moisés Ozório de Souza Neto ◽  
Rafael Ramon Fonsêca Rodrigues

The implementation of a cost control system in construction companies contributes to reducing resource losses in the production process and increasing business productivity and profitability, especially when it comes to small business, which normally do not have a planning system and efficient control. Therefore, this article aims to propose a target costing model for a small construction business, concerning the efficient evaluation of its costs for the maximization of profits in proposals to provide services to public entities. A case study is used, in which data collection occurred through a questionnaire, observations of the process of preparing financial proposals, other unstructured questions, and documentary search, whose approach includes descriptive and qualitative research. The survey results revealed that the enterprise has a cost control system, but is technologically backward. Besides, the enterprise already intuitively used the concepts of target cost in preparing budgets. After evaluating the costs, a target costing model was suggested for the enterprise to use as a parameter in the bidding processes, however, it was not implemented due to the current unfavorable conditions.


2021 ◽  
Vol 911 (1) ◽  
pp. 012058
Author(s):  
Suriani ◽  
Baharuddin Patandjengi ◽  
Muh. Junaid ◽  
Amran Muis

Abstract Bacterial stalk rot disease in corn results in a significant reduction in yield due to the interruption of the flow of nutrients from the roots to other parts of the plant. Pathogenic bacteria infect the inner tissue of the stalk until it rots. This disease has been reported to attack corn crops in Asia and Europe such as India, Korea, Thailand, Philippines, Nepal, Mexico, Serbia, and China. In Indonesia, this disease was first reported to attack corn in the West Sulawesi region by the Mamuju Class II Quarantine Station. The results of molecular identification indicated that this disease is caused by the bacterium Dickeya zeae, previously known as Erwinia chrysanthemi pv. zeae that previously reported attacked pineapple and aloe vera in Indonesia. The potential for economic losses due to this disease is quite high, so appropriate and efficient control measures are needed. Based on those, this research study about the symptom, the characteristic of the bacteria agent caused the stalk rot disease, the distribution and the impact to the maize production in Indonesia.


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