Rhamsan gum production bySphingomonassp. CGMCC 6833 using a two-stage agitation speed control strategy

2014 ◽  
Vol 61 (4) ◽  
pp. 453-458 ◽  
Author(s):  
Xiao Ying Xu ◽  
Ping Zhu ◽  
Sha Li ◽  
Xiao Ye Chen ◽  
Xing Huan Jiang ◽  
...  
Keyword(s):  
Control Strategy ◽  
Speed Control ◽  
Agitation Speed ◽  
Two Stage ◽  
Rhamsan Gum

Enhanced 2,3-butanediol production by Klebsiella oxytoca using a two-stage agitation speed control strategy

2009 ◽  
Vol 100 (13) ◽  
pp. 3410-3414 ◽  
Author(s):  
Xiao-Jun Ji ◽  
He Huang ◽  
Jun Du ◽  
Jian-Guo Zhu ◽  
Lu-Jing Ren ◽  
...  
Keyword(s):  
Control Strategy ◽  
Klebsiella Oxytoca ◽  
Speed Control ◽  
Agitation Speed ◽  
Two Stage

Enhanced welan gum production using a two-stage agitation speed control strategy in Alcaligenes sp. CGMCC2428

2010 ◽  
Vol 34 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Hui Li ◽  
Hong Xu ◽  
Hao Xu ◽  
Sha Li ◽  
Han-Jie Ying ◽  
...  
Keyword(s):  
Control Strategy ◽  
Speed Control ◽  
Agitation Speed ◽  
Two Stage ◽  
Welan Gum

Simultaneously enhanced production and molecular weight of pullulan using a two-stage agitation speed control strategy

2014 ◽  
Vol 91 (2) ◽  
pp. 467-475 ◽  
Author(s):  
Dahui Wang ◽  
Juanjuan Bian ◽  
Gongyuan Wei ◽  
Min Jiang ◽  
Mingsheng Dong
Keyword(s):  
Molecular Weight ◽  
Control Strategy ◽  
Speed Control ◽  
Agitation Speed ◽  
Two Stage ◽  
Enhanced Production

Production of Rhamsan Gum Using a Two-Stage pH Control Strategy by Sphingomonas sp. CGMCC 6833

2013 ◽  
Vol 172 (1) ◽  
pp. 168-175 ◽  
Author(s):  
Xu Xiao Ying ◽  
Zhu Ping ◽  
Li Sha ◽  
Chen Xiao Ye ◽  
Yao Zhong ◽  
...  
Keyword(s):  
Control Strategy ◽  
Ph Control ◽  
Two Stage ◽  
Rhamsan Gum

Speed regulation control of tractors’ new dual-flow transmission system based on slip rate resistance classification

2021 ◽  
pp. 095440702110105
Author(s):  
Guang Xia ◽  
Yan Xia ◽  
Xiwen Tang ◽  
Linfeng Zhao ◽  
Baoqun Sun
Keyword(s):  
Control Strategy ◽  
Control Algorithm ◽  
Production Efficiency ◽  
Sliding Mode ◽  
Slip Rate ◽  
Speed Control ◽  
Working Environment ◽  
Vehicle Speed ◽  
Speed Change ◽  
Simulation Results

Fluctuations in operation resistance during the operating process lead to reduced efficiency in tractor production. To address this problem, the project team independently developed and designed a new type of hydraulic mechanical continuously variable transmission (HMCVT). Based on introducing the mechanical structure and transmission principle of the HMCVT system, the priority of slip rate control and vehicle speed control is determined by classifying the slip rate. In the process of vehicle speed control, the driving mode of HMCVT system suitable for the current resistance state is determined by classifying the operation resistance. The speed change rule under HMT and HST modes is formulated with the goal of the highest production efficiency, and the displacement ratio adjustment surfaces under HMT and HST modes are determined. A sliding mode control algorithm based on feedforward compensation is proposed to address the problem that the oil pressure fluctuation has influences on the adjustment accuracy of hydraulic pump displacement. The simulation results of Simulink show that this algorithm can not only accurately follow the expected signal changes, but has better tracking stability than traditional PID control algorithm. The HMCVT system and speed control strategy models were built, and simulation results show that the speed control strategy can restrict the slip rate of driving wheels within the allowable range when load or road conditions change. When the tractor speed is lower than the lower limit of the high-efficiency speed range, the speed change law formulated in this paper can improve the tractor speed faster than the traditional rule, and effectively ensure the production efficiency. The research results are of great significance for improving tractor’s adaptability to complex and changeable working environment and promoting agricultural production efficiency.

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