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What are the most promising innovations in vehicle dynamics control and actuation systems?

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Vehicle dynamics control and actuation systems are essential for enhancing the safety, performance, and comfort of modern vehicles. They enable the driver and the vehicle to interact with the road and the environment in various conditions and scenarios. In this article, you will learn about some of the most promising innovations in this field, and how they can improve your driving experience.

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Oriol Sala Solà

Engineer & Car Enthusiast - Vehicle Dynamics Engineer at IDIADA
Hans-Jürgen Schulze

Hochbegabte wissen, dass sie nichts wissen

1 Adaptive suspension

Adaptive suspension is a system that adjusts the stiffness and damping of the shock absorbers and springs according to the road surface, speed, and driving mode. It can improve the ride quality, handling, stability, and fuel efficiency of the vehicle. Some of the latest technologies in adaptive suspension include active roll control, which reduces body roll and enhances cornering performance, and active height control, which lowers or raises the vehicle height to optimize aerodynamics and ground clearance.

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Moe D.

Cybersecurity | Ethical Hacker | Data Science | Videographer | M300 Pilot | Photographer | Free Thinker | Sigma
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I would say that adaptive stands for the suspension (Mechanical Part of the automobile) in favor for the cabin environment. The cabin remains stable which allows the driver to enjoy a more comfortable ride which enables all the mentioned points.

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Oriol Sala Solà

Engineer & Car Enthusiast - Vehicle Dynamics Engineer at IDIADA
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Adaptive suspension mainly affects on comfort and road holding of the vehicle. Affecting on the vertical forces on each wheel, the capability to control the vehicle ride is possible. Allows a single vehicle to behave as multiple vehicles with different damping characteristics.

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2 Torque vectoring

Torque vectoring is a system that distributes the engine torque to each wheel individually, depending on the steering angle, speed, and traction. It can improve the agility, responsiveness, and stability of the vehicle, especially in curves and slippery conditions. Some of the latest technologies in torque vectoring include electric differential, which uses electric motors to control the torque transfer, and brake-based torque vectoring, which applies selective braking to the inner wheels to create a yaw moment.

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Oriol Sala Solà

Engineer & Car Enthusiast - Vehicle Dynamics Engineer at IDIADA
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Torque vectoring could be one of the most important active systems in a vehicle due to its big region of impact on the vehicle under-steer characteristic. Affecting directly on the yaw control of the vehicle via the longitudinal forces of the tires, can provide more stability, agility or traction in certain situations.

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Hans-Jürgen Schulze

Hochbegabte wissen, dass sie nichts wissen
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Im Rahmen der ganzheitlichen Betrachtung wird jeweils versucht das Grundproblem in den Griff zu bekommen. Das Basisproblem ist, dass das aktuelle Fahrwerk 3 grundlegend negative Eigenschaften hat. Alle 3 Drehmomente, Roll-, Gier- und Pitchneigung haben negative Vorzeichen. Deren Wirkung wird mit den hier genannten und anderen versucht zu l?sen. Dabei sollte man doch zuerst die Ursache beseitigen, anstatt an den Symptomen herumzudoktern? Der Denkansatz ist also Folgender: Welches Fahrwerk braucht der Computer? Zuerst doch eine Mechanik (Fahrwerk), die exakt das tut, was der Computer will. Vergleichbar einem CNC Bearbeitungszentrum. Pr?zise, schnell, ohne Latenzen. Und? Haben aktuelle Fahrwerke diese Eigenschaften? Siehe km77.com,YouTube.

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3 Active steering

Active steering is a system that varies the steering ratio and the steering angle according to the speed, driving mode, and driver input. It can improve the maneuverability, precision, and comfort of the vehicle, especially at low and high speeds. Some of the latest technologies in active steering include rear-wheel steering, which steers the rear wheels in the opposite or the same direction as the front wheels to enhance turning radius or stability, and steer-by-wire, which eliminates the mechanical connection between the steering wheel and the steering rack and uses electric signals to control the steering.

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Oriol Sala Solà

Engineer & Car Enthusiast - Vehicle Dynamics Engineer at IDIADA
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Front active steering can also vary the steering wheel torque in certain situations to enhance the driver feeling or ease the turning effort. Rear wheel steering increases stability at high speeds, turning the rear wheels in the same direction as the fronts, reducing the vehicle's yaw rate. At low speeds, the rear wheels turn counter-phase as the fronts, increasing the yaw rate of the vehicle and reducing the turning radius. RWS is a very good active system to effect the linear region of the vehicle's under-steer characteristic.

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Hans-Jürgen Schulze

Hochbegabte wissen, dass sie nichts wissen
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Die Hinterradlenkung unterstützt leider zs?tzlich auch noch die Wankneigung und damit eben auch die Fliehkraft. Und ein Gegenpendler (Konterpeitsche) ist die regelm??ige Folge. Die Grenzen der Physik lassen sich weder mit aktiven Lenkungen, Torque Vectoring und adaptiven Fahrwerken auch nur ansatzweise auf das Niveau der Leistungsf?higkeit der Patentfamilie WO2018096173 bringen. Aber wer es nicht selber "erfahren" hat, glaubt es nicht. Kann man auch nicht, da mit dem grundlegenden, allseits bekannten Verst?ndnis es unerkl?rlich zu sein scheint. Und da nehme ich mich keineswegs aus. Aber die Tür ist jetzt aufgesto?en worden zu einem v?llig neuen "Feld". Fazit: Wer autonom fahren will, braucht eine für den Computer geignete Mechanik!

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4 Regenerative braking

Regenerative braking is a system that converts the kinetic energy of the vehicle into electrical energy during braking, and stores it in a battery or a capacitor. It can improve the fuel efficiency, emission reduction, and brake performance of the vehicle, especially in urban and stop-and-go traffic. Some of the latest technologies in regenerative braking include electric brake booster, which uses an electric motor to provide brake pressure and feedback, and brake-by-wire, which eliminates the hydraulic connection between the brake pedal and the brake calipers and uses electric signals to control the braking.

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Sarvajith Guru Prakash

Tyre Engineer at Apollo Tyres Ltd | M.Sc in Automotive Systems
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Typically, the electric motor serves the purpose of propelling the vehicle forward by rotating the wheels. However, when the brakes are applied, the polarity of the motor reverses, causing it to transition into a generator mode. In this state, the same motor transforms its function to generate current, effectively contributing to the recharging of the vehicle's battery. This innovative dual functionality enhances the overall efficiency of electric vehicles. It can recover and reuse up to 70-90% of the energy otherwise lost as heat during traditional braking systems.

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5 Electric propulsion

Electric propulsion is a system that uses electric motors to drive the wheels, instead of an internal combustion engine. It can improve the power delivery, noise reduction, and environmental impact of the vehicle, especially in zero-emission zones and renewable energy sources. Some of the latest technologies in electric propulsion include in-wheel motors, which integrate the electric motors into the wheel hubs and eliminate the need for a transmission and a drivetrain, and wireless charging, which transfers electricity to the vehicle battery without a physical connection.

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6 Autonomous driving

Autonomous driving is a system that uses sensors, cameras, radars, lidars, and artificial intelligence to control the vehicle without human intervention. It can improve the safety, convenience, and productivity of the vehicle, especially in congested and complex traffic situations. Some of the latest technologies in autonomous driving include vehicle-to-vehicle and vehicle-to-infrastructure communication, which enable the vehicle to exchange information and coordinate actions with other vehicles and road elements, and adaptive cruise control and lane keeping assist, which maintain the vehicle speed and position relative to the surrounding traffic and lane markings.

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Hans-Jürgen Schulze

Hochbegabte wissen, dass sie nichts wissen
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Wer autonom fahren will, braucht erst einmal ein Fahrwerk/Mechanik, die für den Computer geeignet ist. 1mm rechts, 0,5mm links muss sofort ohne Nachregelung und Latenzen sicher erreicht werden. Nicht mehr, nicht weniger! Für die n?tige gesellschaftliche Akzeptanz wird überlegene physikalische Leistungsf?higkeit gebraucht. Das aktuelle Fahrwerk ist per se extrem limitiert. Wer will ernsthaft behaupten, wenn man sich beim Fahrradfahren, Skilaufen, selber rennen nach aussen lehnt, w?re dass das ultimative Optimum? Change your mind!

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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C?t?lin Dinu

NVH Motor Vehicle Engineering
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Active Roll Control electrically actuated (eARC) can be a considered a significant step up into vehicle response to the driving conditions.

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What are the most promising innovations in vehicle dynamics control and actuation systems?

1

2

3

4

5

6

7

1 Adaptive suspension

2 Torque vectoring

3 Active steering

4 Regenerative braking

5 Electric propulsion

6 Autonomous driving

7 Here’s what else to consider

Automotive Engineering

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What are the most promising innovations in vehicle dynamics control and actuation systems?

1

2

3

4

5

6

7

1 Adaptive suspension

2 Torque vectoring

3 Active steering

4 Regenerative braking

5 Electric propulsion

6 Autonomous driving

7 Here’s what else to consider

Automotive Engineering

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