ANN and Non-Integer Order Modeling of ABS Solenoid Valves

Branciforte, M.; Meli, Alessandro; Muscato, Giovanni; Porto, D.

doi:10.1109/tcst.2010.2049999

Cited by 26 publications

(13 citation statements)

References 14 publications

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“…Moreover, the resistance value of the solenoid coil further varies by 70% to 100% due to the coil heating caused by high current [8,9], resulting in the shape of the current ripple being affected. To analyze the characteristics of the solenoid coil current, the solenoid value was mathematically modeled and simulated using a Simulink simulation tool [7]. Thus, the simulation result is obtained using a real solenoid coil with the valve, showing that it fits well with the measured data, as shown in Fig.…”

Section: Conventional and Proposed Solenoid Valve Driversmentioning

confidence: 79%

“…The measured data shows a steep current slope right after the low-side driver is turned off or on, and then shows a gentle current slope. These unbalanced characteristics are caused by variations in the impedance value of the solenoid coil valve due to the ferromagnetic, hysteresis, and saturation characteristics of the solenoid valve core [7]. Moreover, the resistance value of the solenoid coil further varies by 70% to 100% due to the coil heating caused by high current [8,9], resulting in the shape of the current ripple being affected.…”

Section: Conventional and Proposed Solenoid Valve Driversmentioning

confidence: 99%

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A highly accurate solenoid valve driver with current sensing circuits for brake systems

Lee

Kwon

2018

IEICE Electron. Express

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In this paper, we propose a highly accurate solenoid valve driver with high-and low-side current sensing circuits. The proposed solenoid valve driver improves the current accuracy by sensing the current of the solenoid coil alternately in the on-and off-states of the power MOS transistor. In the on-state, the low-side sensing circuit senses the current flowing through the low-side transistor. In the off-state, the high-side sensing circuit senses the current flowing through the high-side transistor. The proposed solenoid valve driver was implemented using a 0.11 µm BCDMOS process. The measurement results show that the proposed solenoid valve driver achieves a high current accuracy of less than ²4% over the entire current range from 0 A to 2.25 A.

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Section: Conventional and Proposed Solenoid Valve Driversmentioning

confidence: 79%

Section: Conventional and Proposed Solenoid Valve Driversmentioning

confidence: 99%

A highly accurate solenoid valve driver with current sensing circuits for brake systems

Lee

Kwon

2018

IEICE Electron. Express

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“…By measuring the current and voltage of the solenoid, the magnetization curves can be derived, which also include hysteresis effects. A PWM-driven solenoid for ABS valves is modelled by Branciforte et al (2011). The fast dynamics are modelled using a fractional order system, while the hysteresis is covered by using neural networks.…”

Section: Modelling and Analysis Of A Commercial Proportional Solenoidmentioning

confidence: 99%

On Electrohydraulic Pressure Control for Power Steering Applications : Active Steering for Road Vehicles

Dell’Amico¹

2016

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This thesis deals with the Electrohydraulic Power Steering system for road vehicles, using electronic pressure control valves. With an ever increasing demand for safer vehicles and fewer traffic accidents, steering-related active safety functions are becoming more common in modern vehicles. These are functions that aim at assisting the driver in more or less critical situations and could be anything from applying a guiding steering torque to taking over the steering completely. Future road vehicles will also evolve towards autonomous vehicles, with several safety, environmental and financial benefits. A key component in realising such solutions is active steering. This refers to the possibility to control the steering angle or steering torque with an electronic signal.The power steering system was initially developed to ease the driver's workload by assisting in turning the wheels. This is traditionally done through an open-centre hydraulic system and heavy trucks must still rely on fluid power, due to the heavy work forces. The system provides a robust solution but suffers from poor energy efficiency and lacks the possibility of active control. Since the purpose of the original system is to control the assistive pressure, one way would be to use proportional pressure control valves. Since these are electronically controlled, active steering is possible and with closed-centre, energy efficiency can be significantly improved on.In this work, such a system is analysed in detail with the purpose of investigating the possible use of the system for Boost curve control, the most common control strategy in power steering systems, and position control for autonomous driving. Commercially available valves are investigated since they provide an attractive solution. A model-based approach is adopted, where simulation of the system is an important tool. Detailed models at both a component level and a system level are developed and form the basis of the analysis and control design. Another important tool is hardware-in-the-loop simulation. A test rig of the system, that also includes the original system, is developed. The rig supports the modelling and validation process, as it also makes it possible to verify control concepts on a real system. This work has shown how proportional pressure control valves can be used for Boost curve control and position control and what implications this has i on a system level. As it turns out, the valves add a great deal of phase shift and with the high gain from the Boost curve, this creates a control challenge. The problem can be handled by tuning the Boost gain, pressure response and damping and has been effectively shown through simulation and experiments. For position control, there is greater freedom to design the controller to fit the system. The pressure response can be made fast enough for this case and the phase shift is much less critical.Keywords: Electrohydraulic power steering, pressure control, closed-centre steering, Boost curve control, autonomous driving, hardware-...

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“…Solenoid actuators are used in valves and switches. A braking system consisting of a solenoid actuator has been introduced (10) . The main features of the solenoid actuators are reduced cost, simple structure, and high output with a small volume.…”

Section: Introductionmentioning

confidence: 99%

Real-time Sensorless Estimation of Position and Force for Solenoid Actuators

2016

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In various fields, small actuation systems are required to aid human activities in a narrow space and to realize fine motions. Although some miniature actuators have been developed, the size of the sensors attached to them prevents the miniaturization of the systems. In this paper, a sensorless actuation system with a compact solenoid actuator is proposed. An input signal including the AC and DC components is used. The inductance and position are estimated from the AC component. The DC component is applied in order to drive the solenoid actuator. Simulations and experiments concerning frequency characteristics and simultaneous estimation are conducted to verify the validity of the proposal. From the results of the frequency characteristics, the position and force estimation are accurately achieved up to 10 Hz frequency. As a result of the simultaneous estimation, the position and force are simultaneously estimated in real time. This proposal is useful, because a small solenoid actuation system whose position and force are simultaneously estimated in real time without the need for any position and force sensors is realized.

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ANN and Non-Integer Order Modeling of ABS Solenoid Valves

Cited by 26 publications

References 14 publications

A highly accurate solenoid valve driver with current sensing circuits for brake systems

A highly accurate solenoid valve driver with current sensing circuits for brake systems

On Electrohydraulic Pressure Control for Power Steering Applications : Active Steering for Road Vehicles

Real-time Sensorless Estimation of Position and Force for Solenoid Actuators

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