Differential electronic effectiveness is an important aspect of a vehicle’s traction-modifier system. This system is responsible for determining how the car will react to varying driving conditions. Various factors affect the effectiveness of a traction-modifier system, including the torque applied to the clutch packs, the steering angle sensor, and yaw rate sensor.
Control of the amount of pressure applied to the clutch packs
The pressure applied to the clutch packs controls how the engine delivers power to the transmission. The clutch packs are made up of several mechanical components and engage and disengage depending on the engine’s speed and gear ratio. The amount of pressure applied is controlled by a proportional valve. The hydraulic pressure applied to the clutch packs helps regulate the amount of pressure applied to the clutch plates. This is one of the main reasons why the clutch packs are important components of the transmission.
Typically, the hydraulic pressure is used to engage the clutch. This pressure controls the sliding velocity of the friction plate. The friction plate heat influences the engagement time, which makes it important to have the proper pressure applied to the clutch packs.
Control of the steering angle signal
The proposed mechanism allows for the accurate estimation of steering angle. It has a low error rate and is stable. It can decrease the deviation from the reference angle to less than 1deg. In addition, it can track the actual self-aligning torque. Its performance is illustrated in Figure 4.
The steering angle signal is filtered using a moving 0.1-second running average filter. Then the filtered signal is divided by the number of degrees and interpolated to obtain the steering angle.
Influence of torque on the change of F 2 / F 1
When using differentials, it is important to consider torque. Torque affects the ability of a differential to work at optimum performance. High torque may cause the gear to slip, which decreases the car’s performance. Fortunately, there are ways to reduce torque by using torque vectoring. These methods use a vehicle’s ABS system and wheel speed sensors to adjust the torque to the most gripped wheels.
The change in torque is important because it affects the electronic differential’s control rate. Specifically, it affects the change in the differential’s control rate, or the electronic differential’s F 2 / F 1. Eq. 10 provides a mathematical formula for calculating the change in the controller’s electronic effectiveness.
Effect of yaw rate sensor on the change of F 2 / F 1
The change in F2 and F1 in the differential electronic effectiveness of a yaw-rate sensor is proportional to the Coriolis force Fcorx. By measuring the change in capacitance, the yaw rate can be calculated.
A yaw-rate sensor is a device that provides information about the rotation of a vehicle. It consists of two yaw-rate sensor elements and a signal processing unit. A multiplexer supplies the sensor signal to the processing unit, which processes the signal and switches it to the different outputs.
Effect of slip rate control on the change of F 2 / F 1
The change in F 2 / F 1 is a function of the electronic differential load. When the slip rate is controlled, it is important to consider that the differential load may change. When the differential load is low, the target slip is above the critical slip value. As the slip rate increases, the target slip approach the critical value. In this way, the control performance of the electronic compensation circuit changes.
The effect of slip rate control on the change of F 1 / F 2 in differential electronic effectiveness can be calculated by using Eq. 16. To optimize the control rate of the differential signal, the control parameters must be optimized. The optimal combination of these parameters is given by Eq. 16.
Applications of differential electronic effectiveness
The differential in the transmission system is a component of the power supply that prevents a vehicle from slipping on curved roads. However, mechanical differentials are bulky and inefficient, and they aren’t practical for electric vehicles, which have separate drives for their rear wheels. Hence, electronic differentials have been developed to improve electric vehicles’ stability and control over curved roads.