Estimation of Angular Speed and Park Matrix from Resolver Position Sensor Signals without Using Trigonometric Functions

2018 ◽  
Author(s):  
Raymundo Cordero Garcia ◽  
Joao Onofre Pereira Pinto ◽  
Alex Butinhol Belini
Keyword(s):  
Angular Speed ◽  
Position Sensor ◽  
Trigonometric Functions ◽  
Sensor Signals

Tractor Electro-Hydraulic Hitch System Design Based on DSP

2013 ◽  
Vol 448-453 ◽  
pp. 3481-3484
Author(s):  
Huang Xu ◽  
Yan Dong Song ◽  
Zhi Xiong Lu ◽  
Hong Lei Pang
Keyword(s):  
System Design ◽  
Force Sensor ◽  
Position Sensor ◽  
Hydraulic Control ◽  
Work Requirements ◽  
Hardware System ◽  
Sensor Position ◽  
Sensor Signals ◽  
Signal Output ◽  
And Control

To achieve electro-hydraulic control requirements of tractor hitch system, TMS320F2812 was chosen as control chip, to collect sensor signals and control the hitch system. Hardware system was designed to finish the signal collections of force sensor, position sensor and PWM signal output. Through the simulation, the reliability of design was verified, meeting the work requirements of electrohydraulic hitch system.

scholarly journals A METHOD OF ECONOMICAL CONTROL OF A SYNCHRONOUS MOTOR WITHOUT A ROTOR POSITION SENSOR

2021 ◽  
pp. 36-46
Author(s):  
Ivan V. Viktorov ◽  
Vladimir M. Nikitin
Keyword(s):  
Energy Exchange ◽  
Voltage Drop ◽  
Synchronous Motor ◽  
Position Sensor ◽  
Rotor Position ◽  
Wide Range ◽  
Sensor Signals ◽  
High Dynamic ◽  
Autonomous Voltage Inverter ◽  
Load Angle

The article considers a method of economical speed control of synchronous motor with permanent magnet excitation using autonomous voltage inverter. The method provides stable (without tilting) rotation of the rotor without using the rotor position sensor signals. An algorithm, which realizes minimal losses in the machine and in the inverter, is proposed. The assumption of insignificant influence of voltage drop in stator winding active resistance on processes in synchronous machine accepted in the analysis is confirmed by parameters of real motors from 7DVM series and results of the experiment. It is shown that the mode with cosφ = 1 differs little from the generally accepted mode with load angle θ = φ. The results of experimental verification of the method in electric drive with 7DVM250 motor of 150 kW power are presented, which showed high dynamic stability of the system in a wide range of speeds and loads and while maintaining the most economical energy exchange between the motor and inverter (that is with cosφ = 1).

scholarly journals RNN-Aided Human Velocity Estimation from a Single IMU

Sensors ◽  
2020 ◽  
Vol 20 (13) ◽  
pp. 3656 ◽  
Author(s):  
Tobias Feigl ◽  
Sebastian Kram ◽  
Philipp Woller ◽  
Ramiz H. Siddiqui ◽  
Michael Philippsen ◽  
...  
Keyword(s):  
Neural Network ◽  
Dead Reckoning ◽  
Parameter Tuning ◽  
Angular Speed ◽  
Velocity Estimation ◽  
Spatial Features ◽  
Temporal Relationships ◽  
Sensor Signals ◽  
Measurement Units ◽  
Conventional Machine

Pedestrian Dead Reckoning (PDR) uses inertial measurement units (IMUs) and combines velocity and orientation estimates to determine a position. The estimation of the velocity is still challenging, as the integration of noisy acceleration and angular speed signals over a long period of time causes large drifts. Classic approaches to estimate the velocity optimize for specific applications, sensor positions, and types of movement and require extensive parameter tuning. Our novel hybrid filter combines a convolutional neural network (CNN) and a bidirectional recurrent neural network (BLSTM) (that extract spatial features from the sensor signals and track their temporal relationships) with a linear Kalman filter (LKF) that improves the velocity estimates. Our experiments show the robustness against different movement states and changes in orientation, even in highly dynamic situations. We compare the new architecture with conventional, machine, and deep learning methods and show that from a single non-calibrated IMU, our novel architecture outperforms the state-of-the-art in terms of velocity (≤0.16 m/s) and traveled distance (≤3 m/km). It also generalizes well to different and varying movement speeds and provides accurate and precise velocity estimates.

Impedance Characteristics Analysis of the Non-Contact Magnetic Type Position Sensor

2008 ◽  
Vol 128 (11) ◽  
pp. 435-441
Author(s):  
Seung-ho Yang ◽  
Katsuhiro Hirata ◽  
Tomohiro Ota ◽  
Yoshio Mitsutake ◽  
Yoshihiro Kawase
Keyword(s):  
Position Sensor ◽  
Impedance Characteristics ◽  
Characteristics Analysis ◽  
Magnetic Type

Calibration and Estimate of Oceanographic Sensor Signals

2002 ◽  
Author(s):  
Asok K. Ray ◽  
Shashi Phoha
Keyword(s):  
Sensor Signals

A New Solution for Maxterm Problem in Trigonometric Functions by Simulated Annealing Algorithm

2013 ◽  
Vol 4 (2) ◽  
pp. 20-28
Author(s):  
Farhad Soleimanian Gharehchopogh ◽  
Hadi Najafi ◽  
Kourosh Farahkhah
Keyword(s):  
Simulated Annealing ◽  
Simulated Annealing Algorithm ◽  
Trigonometric Functions ◽  
Matlab Software ◽  
Annealing Algorithm ◽  
Do So

The present paper is an attempt to get total minimum of trigonometric Functions by Simulated Annealing. To do so the researchers ran Simulated Annealing. Sample trigonometric functions and showed the results through Matlab software. According the Simulated Annealing Solves the problem of getting stuck in a local Maxterm and one can always get the best result through the Algorithm.

scholarly journals An Enhanced Data Visualization Method for Diesel Engine Malfunction Classification Using Multi-Sensor Signals

Sensors ◽  
2015 ◽  
Vol 15 (10) ◽  
pp. 26675-26693 ◽  
Author(s):  
Yiqing Li ◽  
Yu Wang ◽  
Yanyang Zi ◽  
Mingquan Zhang
Keyword(s):  
Diesel Engine ◽  
Data Visualization ◽  
Visualization Method ◽  
Sensor Signals

Research and Develop on Static Frequency Converter of Pumped Storage Power Plant

2012 ◽  
Vol 608-609 ◽  
pp. 1120-1126 ◽  
Author(s):  
De Shun Wang ◽  
Bo Yang ◽  
Lian Tao Ji
Keyword(s):  
Power Plant ◽  
Control Strategy ◽  
Large Scale ◽  
Frequency Converter ◽  
Position Estimation ◽  
Position Sensor ◽  
Storage Unit ◽  
Rotor Position ◽  
Start Up ◽  
Pumped Storage

A static frequency converter start-up control strategy for pumped-storage power unit is presented. And rotor position detecting without position sensor is realized according to voltage and magnetism equations of ideal synchronous motor mathematics model. The mechanism and implementation method of initial rotor position determination and rotor position estimation under low frequency without position sensor are expounded and validated by simulations. Based on the mentioned control strategy, first set of a static frequency converter start-up device in China for large-scale pumped-storage unit is developed, which is applied to start-up control test in the 90 MW generator/motor of Panjiakou Pumped-storage Power Plant. Test results show that rotor position detecting, pulse commutation, natural commutation, and unit synchronous procedure control of static start-up are all proved. The outcomes have been applied in running equipment, which proves the feasibility of mentioned method.

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