Coupled rigid-flexible modelling and dynamic characteristic analysis of electromechanical brake (EMB) units on trains

Weng, Jingjing; Tian, Chun; Wu, Meihong; Chen, Maolin

doi:10.1177/0954409720957542

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…According to the SPMSM principle, if i d is fixed at zero, the torque will go up to the maximum value [27]. Hence, Equation ( 5) can further become a simple form similar to the DC motor torque formula in which currents can have a linear expression with torque:…”

Section: Modeling Of Motormentioning

confidence: 99%

Variable Universe Fuzzy–Proportional-Integral-Differential-Based Braking Force Control of Electro-Mechanical Brakes for Mine Underground Electric Trackless Rubber-Tired Vehicles

Li,

Jiang

2024

Sensors

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Currently, the main solution for braking systems for underground electric trackless rubber-tired vehicles (UETRVs) is traditional hydraulic braking systems, which have the disadvantages of hydraulic pressure crawling, the risk of oil leakage and a high maintenance cost. An electro-mechanical-braking (EMB) system, as a type of novel brake-by-wire (BBW) system, can eliminate the above shortcomings and play a significant role in enhancing the intelligence level of the braking system in order to meet the motion control requirements of unmanned UETRVs. Among these requirements, the accurate control of clamping force is a key technology in controlling performance and the practical implementation of EMB systems. In order to achieve an adaptive clamping force control performance of an EMB system, an optimized fuzzy proportional-integral-differential (PID) controller is proposed, where the improved fuzzy algorithm is utilized to adaptively adjust the gain parameters of classic PID. In order to compensate for the deficiency of single-close-loop control and adjusting the brake gap automatically, a cascaded three-closed-loop control architecture with force/position switch technology is established, where a contact point detection method utilizing motor rotor angle displacement is proposed via experiments. The results of the simulation and experiments indicate that the clamping force response of the proposed multi-close-loop Variable Universe Fuzzy–PID (VUF-PID) controller is faster than the multi-closed-loop Fuzzy–PID and cascaded three-close-loop PID controllers. In addition, the chattering of braking force can be suppressed by 17%. This EMB system may rapidly and automatically finish the operation of the overall braking process, including gap elimination, clamping force tracking and gap recovery, which can obviously enhance the precision of the longitudinal motion control of UETRVs. It can thus serve as a BBW actuator of mine autonomous driving electric vehicles, especially in the stage of braking control.

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Section: Modeling Of Motormentioning

confidence: 99%

Variable Universe Fuzzy–Proportional-Integral-Differential-Based Braking Force Control of Electro-Mechanical Brakes for Mine Underground Electric Trackless Rubber-Tired Vehicles

Li,

Jiang

2024

Sensors

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“…EMBs eliminate all hydraulic components, thereby reducing response delay and improving the accuracy of brake pressure control. At the same time, the EMB system can also achieve energy recovery (Wu et al, 2019;Weng et al, 2021). However, in the EMB system, traditional proportional integral differential (PID) controllers are prone to external interference, resulting in reduced braking control effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Electronic mechanical braking system executive mechanism design, calculation, and modeling based on dynamic control

Wu,

He,

et al. 2024

Front. Mech. Eng.

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Introduction: As science and technology develop, automobiles are moving toward intelligence and electrification and need better braking systems.Methods: To improve the braking system’s response speed and braking effect, a longitudinal dynamics control system for automobiles based on the electronic mechanical braking system was proposed, and the electronic mechanical braking system was improved through automatic disturbance rejection control.Results: The experimental results show that the time required for achieving the target clamping force in the electronic mechanical braking system using self-disturbance rejection control and proportional integral differential control is only 0.01 s, but there is an issue of excessive control in the proportional integral differential system between 0.12 s and 0.2 s, while the self-disturbance rejection controller does not have this problem. Meanwhile, regardless of the interference applied, the electronic mechanical braking system with automatic disturbance rejection control can ensure that the clamping force does not fluctuate. In the joint simulation experiment, the expected acceleration and actual acceleration can remain consistent, and if the expected braking force is 9000 N, then the actual braking force of the electronic mechanical brake (EMB) is also 9000 N.Discussion: The above results indicate that the vehicle longitudinal dynamics control system using the electronic mechanical braking system not only responds fast but also has a good braking effect, avoiding the problem of excessive control and improving the driving experience.

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“…It provides reference for the structural design, control design and fault diagnosis of EMB units. 11 However, electro-mechanical disc brakes are not widely used in mine hoist braking.…”

Section: Introductionmentioning

confidence: 99%

Design and test of electromechanical disc brake controller for mine hoist

Jin

Wang

2022

Measurement and Control

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Electromechanical braking technology is an effective way to improve the braking response of mine hoist. Through the analysis of the mine hoist electromechanical mechanical disc brake, a mathematical model including the motor, reducer and thread pair is established. The control process is analyzed in detail, and then the control strategy is obtained. An automatic control system based on linear quadratic regulator and PI controller is proposed. The braking goal of self-adaptive adjustment of braking clearance and on-line adjustment of braking force is realized. Compare the simulation and test results, discuss the performance of the controller. The results of the experiment indicate that the brake gap adjustment time is less than 10 s, stable within 1±0.2 mm, and the steady-state error is less than 2%. The positive pressure of the brake has a linear relationship with the motor voltage, with a slope of 920.4 and an intercept of −1298.88. It can replace the existing hydraulic brakes without the problem of low degree of automation and high pollution, which provides a new way for the control system of electromechanical brake.

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Coupled rigid-flexible modelling and dynamic characteristic analysis of electromechanical brake (EMB) units on trains

Cited by 10 publications

References 18 publications

Variable Universe Fuzzy–Proportional-Integral-Differential-Based Braking Force Control of Electro-Mechanical Brakes for Mine Underground Electric Trackless Rubber-Tired Vehicles

Variable Universe Fuzzy–Proportional-Integral-Differential-Based Braking Force Control of Electro-Mechanical Brakes for Mine Underground Electric Trackless Rubber-Tired Vehicles

Electronic mechanical braking system executive mechanism design, calculation, and modeling based on dynamic control

Design and test of electromechanical disc brake controller for mine hoist

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