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Technical Paper

Estimation Parameters of Braking of Vehicles Category M1 at Definition of Circumstances Road Accidents

2022-09-19
2022-01-1166
The study of the distribution of the deceleration of vehicles of category M1 when performing various maneuvers is intended to develop methods for assessing the parameters of maneuvering of cars in the study of the circumstances of the occurrence of road accidents. Experimental studies were carried out on passenger cars, which are equipped with automated braking force control systems, for various driving styles. M1 category vehicles were maneuvered on dry asphalt pavement in the range of speeds from 11 to 25 m / s, which is typical for most road traffic accidents. It was found that when braking a vehicle of category M1, longitudinal deceleration increase according to a second-order polynomial dependence in the range of deceleration variation from 1.39 to 5.86 m/s2.
Technical Paper

Research of the Inductive Sensor of the Electropneumatic Clutch Control System for the Mechanical Transmission at Change of Ambient Temperature

2021-04-06
2021-01-0679
This article describes experimental research results of the inductive sensor of the electropneumatic clutch control system for the mechanical transmission. Inductive sensors are used to determine the position of the car body, the position of the controls and the position of the rod of the clutch control actuator. The design of the clutch pedal position sensor is proposed, which can be brought into line with the master cylinder to unify the clutch control systems. Complete unification of the automated electropneumatic clutch control system for trucks will allow creating modifications in which it is possible to completely abandon the use of brake fluid in the drive, which will improve the ergonomic and environmental performance of the vehicle. The advantages of such sensors are the ability to receive a signal in digital form without additional converters, the ability to work using only two wires, no contact between moving parts, resistance to aggressive environments and compact size.
Technical Paper

Selection of Rational Parameters of Automated System of Robotic Transmission Clutch Control on the Basis of Simulation Modelling

2019-01-15
2019-01-0029
The article deals with the analysis of one of the methods of selecting rational parameters of automated clutch control system for robotic transmission. The objective is to select rational parameters of automated clutch control system for robotic transmission, equipped with electropneumatic actuating mechanism on the basis of mathematical simulation. The depicted mathematical simulation of the clutch control system is characterized by the possibility to coordinate the algorithm of control unit with the dynamic processes in the execution device. The new functional interrelations between the elements of the electro-pneumatic actuator are mathematically described. The way to the selection of rational parameters of an automated control system for clutch is recommended; the selection taking into account the features of the electro-pneumatic actuator. Using the mathematical modeling method, rational control parameters of the automated clutch control system are determined.
Technical Paper

Assessment of Operation Speed and Precision of Electropneumatic Actuator of Mechanical Transmission Clutch Control System

2018-04-03
2018-01-1295
This article describes experimental research results of the electropneumatic clutch control device for the mechanical transmission. The aim is to assess electropneumatic clutch control device characteristics to regulate both mechanical and robotic transmission. The feature of the clutch control system having the electropneumatic actuator on the basis of a power cylinder is the use of a control module that consists of an acceleration valve and two electropneumatic valves. A new structural relationship between the electropneumatic clutch control device elements on the basis of the new acceleration valve design is suggested. The assessment of mass and dimension parameters of well-known devices and this electropneumatic clutch control device is provided. A new approach to choose automated clutch control system parameters taking into account the relay electropneumatic control system operation features is suggested.
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