Adaptively robust rotary speed control of an anchor-hole driller under varied surrounding rock environments

2019 ◽  
Vol 86 ◽  
pp. 24-36 ◽  
Author(s):  
Yinan Guo ◽  
Wei Cheng ◽  
Dunwei Gong ◽  
Yang Zhang ◽  
Zhen Zhang ◽  
...  
Keyword(s):  
Speed Control ◽  
Surrounding Rock ◽  
Rotary Speed

scholarly journals Rekrontruksi Mesin Frais Ajax Universal Model No. 2A Mark V Di Bengkel Mekanik Polman Negeri Bangka Belitung

2019 ◽  
Vol 10 (02) ◽  
pp. 53-58
Author(s):  
Pristiansyah Pristiansyah
Keyword(s):  
Speed Control ◽  
Axial Direction ◽  
Milling Machine ◽  
Test Results ◽  
Machine Model ◽  
Vibration Machine ◽  
Machine Vibration ◽  
Second Stage ◽  
Last Stage ◽  
Rotary Speed

Mechanical workshop in Polman Bangka Belitung has 8 units Ajax Universal Milling Machine Model No. 2A Mark V. The condition of the engine can not be used maximum, for example a milling machine with a serial number FR12. This machine was damaged at the rotary speed control (rpm) and need repairing process. This study aims to analyze the types and causes damage to the rotary speed control, repair the damaged components and assemble the components to make it functioned with the standard engine. This research is devide in several stages, the first stage is analyzing the causes of the damage, the second stage is repairing and re-assembling the damage components. The last stage is testing for the repaired machine vibration by examining and comparing it with standard and permitted vibration machine and another machine which still good. The test results of the vibration machine is 0.884 mm / s rms for the axial direction and 0.938 mm / s rms for the radial direction. The summary, the vibration is still at the allowed limit which is equal to 1.12 mm / s rms and it means the machine is ready to use.

Research on the Cooling Fan Speed Control Scheme of the Large Power Vehicular Diesel Engine in Altitude Environment

2014 ◽  
Vol 496-500 ◽  
pp. 1226-1230
Author(s):  
Xing He ◽  
Xian Cheng Wang ◽  
Jun Biao Hu ◽  
Zhi Xin Sun
Keyword(s):  
Diesel Engine ◽  
Cooling Water ◽  
Thermal Conditions ◽  
Speed Control ◽  
Open Loop ◽  
Ambient Conditions ◽  
Large Power ◽  
Cooling Fan ◽  
Fan Speed ◽  
Rotary Speed

The cooling water of the large power vehicular diesel engine often got high or low and engine could not work in the adaptive thermal conditions in altitude environment. In order to solve the problem, analyzed the refrigeration requirement of the diesel engine on plateau section, suggested the amelioration program from installing the fluid operated pump-mot fan speed regulating device. Base on the coupling simulation model of the diesel engine working process and coolant system, took the 90°C water temperature of the diesel engine as the optimally target value, analyzed the change canon of cooling fan speed form the ambient conditions and the diesel engine work condition, established the cooling fan rotary speed control MAP on plateau section, and regulated the cooling fan speed by the methods of open loop preset controlling and closed loop feedback controlling. That would provide the improved method for the large power vehicular diesel engine working well on plateau section.

Speed control of large wind tunnels

1958 ◽  
Vol 4 (39) ◽  
pp. 146-147
Author(s):  
L.S. Drake ◽  
J.A. Fox ◽  
G.H.A. Gunnell
Keyword(s):  
Speed Control ◽  
Wind Tunnels ◽  
Large Wind

Combined Sliding Mode Control with a Feedback Linearization for Speed Control of Induction Motor

2011 ◽  
Vol 7 (1) ◽  
pp. 19-24
Author(s):  
Aamir Hashim Obeid Ahmed ◽  
Martino O. Ajangnay ◽  
Shamboul A. Mohamed ◽  
Matthew W. Dunnigan
Keyword(s):  
Sliding Mode Control ◽  
Induction Motor ◽  
Feedback Linearization ◽  
Sliding Mode ◽  
Speed Control ◽  
Mode Control
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