scholarly journals Development of the performance control algorithm of the blower motors of electric locomotives for various operating modes

2021 ◽  
Vol 1111 (1) ◽  
pp. 012001
Author(s):  
A R Akhmetshin ◽  
K V Suslov ◽  
N P Astashkov ◽  
V A Olentsevich ◽  
M G Shtayger ◽  
...  
Keyword(s):  
Control Algorithm ◽  
Performance Control ◽  
Operating Modes

scholarly journals The control algorithm of whole angle mode for HRG based on the vector composition

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Wanliang Zhao ◽  
Yuxiang Cheng ◽  
Shaoliang Li ◽  
Lijun Song
Keyword(s):  
Control Algorithm ◽  
High Reliability ◽  
Energy Transition ◽  
Life Time ◽  
Mathematics Model ◽  
Operating Modes ◽  
Hemispherical Resonator ◽  
Order Of Magnitude ◽  
Electrostatic Control ◽  
Space Launcher

AbstractThe Hemispherical Resonator Gyroscope (HRG) has many advantages such as high precision, high reliability and long life-time, it is widely used in the space-launcher and the satellites. The HRG has been mechanized to operate in the distinct operating modes, the Force to Rebalanced (FTR) mode and the Whole Angle (WA) mode. In the paper, different from the traditional control algorithm is based on average methods which usually used for the WA mode, a new electrostatic control algorithm is presented, which based on the vector composition and decomposition method to control the equivalent drive force in order to track the phase of the standing wave. The mathematics model and the control algorithm are presented in the paper, and the hardware experimental circuit system is implemented, the HRG has a range of more than 300°/s with the linearity of 40 ppm. Meanwhile, the energy transition efficiency increases by an order of magnitude.

scholarly journals The Control Algorithm of Whole Angle Mode for HRG Based on the Vector Composition

2020 ◽  
Author(s):  
Wanliang Zhao ◽  
Yuxiang Cheng ◽  
Shaoliang Li ◽  
Lijun Song
Keyword(s):  
Control Algorithm ◽  
High Reliability ◽  
Energy Transition ◽  
Life Time ◽  
Mathematics Model ◽  
Operating Modes ◽  
Hemispherical Resonator ◽  
Order Of Magnitude ◽  
Electrostatic Control ◽  
Space Launcher

Abstract The Hemispherical Resonator Gyroscope (HRG) has many advantages such as high precision, high reliability and long life-time, it is widely used in the space-launcher and the satellites. The HRG has been mechanized to operate in two the distinct operating modes, the Force to Rebalanced (FTR) mode and the Whole Angle (WA) mode. Different from the traditional control algorithm is based on average methods which usually used for WA mode, in the paper, a new electrostatic control algorithm is presented, which based on the vector composition and decomposition method to control the equivalent drive force in order to track the phase of the standing wave. The mathematics model and the control algorithm are presented in the paper. And the hardware experimental circuit system is implemented, the HRG has a range of more than 300°/s with the linearity of 40 ppm. Meanwhile, the energy transition efficiency increases by an order of magnitude, rather than the average methods.

scholarly journals An Autonomous Human Following Caddie Robot with High-Level Driving Functions

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1516
Author(s):  
Jung Hyun Choi ◽  
Kangwagye Samuel ◽  
Kanghyun Nam ◽  
Sehoon Oh
Keyword(s):  
Control Algorithm ◽  
Ground Surface ◽  
Golf Course ◽  
Driving Mode ◽  
Operating Modes ◽  
Advanced Control ◽  
Heading Angle ◽  
High Level ◽  
Trajectory Generator ◽  
Manual Mode

Nowadays, mobile robot platforms are utilized in various fields not only for transportation but also for other diverse services such as industrial, medical and, sports, etc. Mobile robots are also an emerging application as sports field robots, where they can help serve players or even play the games. In this paper, a novel caddie robot which can autonomously follow the golfer as well as provide useful information such as golf course navigation system and weather updates, is introduced. The locomotion of the caddie robot is designed with two modes: autonomous human following mode and manual driving mode. The transition between each mode can be achieved manually or by an algorithm based on the velocity, heading angle, and inclination of the ground surface. Moreover, the transition to manual mode is activated after a caddie robot has recognized the human intention input by hand. In addition, the advanced control algorithm along with a trajectory generator for the caddie robot are developed taking into consideration the locomotion modes. Experimental results show that the proposed strategies to drive various operating modes are efficient and the robot is verified to be utilized in the golf course.

scholarly journals Simulation Modeling of First Rise Section of Water Supply System with Installed Complex of Automatic Pump Performance Control

Machines ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 63
Author(s):  
George Palkin ◽  
Ivan Suvorov
Keyword(s):  
Water Supply ◽  
Flow Rate ◽  
Integrated Approach ◽  
Operating Conditions ◽  
Control Action ◽  
Water Supply Systems ◽  
Computer Simulation Model ◽  
Performance Control ◽  
Pump Performance ◽  
Operating Modes

The article considers the important problem of technical and economic optimization of the operating modes of the first rise section of water supply systems. At the same time, the task is to minimize the costs associated with the excessive operation of pumps, while providing the protection of the pipeline from freezing in harsh natural operating conditions. To solve this problem, a computer simulation model was developed for the first rise section, equipped with a pump performance control system. The main differences of the developed model are: integrated approach to the analysis of parameters of various physical nature, assessment of the object economic indicators, possibility of simulating non-standard control algorithms. Preliminary studies of the model have shown the possibility and feasibility of its application for calculating the optimal parameters and operating modes of the object under consideration. Based on the simulation results, it was revealed that to calculate the control action by level, it is advisable to use the PID law, for temperature—PD law, for flow rate—PI law. To calculate the main control action, it is proposed to simultaneously calculate the actions in terms of level and temperature, followed by bringing the larger of them to the value of the setpoint for the flow rate maintained by the flow controller. The studies of the proposed management concept for the first rise section have shown its high technical and economic efficiency. In particular, the savings in electricity consumption are estimated at about 55.2% while providing pipeline frost protection.

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