Industry news
Thermistor: Application of Sensor in Suspension System Control
The work of the sensor in the suspension system control is to intervene and adjust the characteristics of the suspension components of the vehicle to achieve the purpose of vehicle dynamics control. At work, the system integrates the motions of the vehicles and the information detected by these sensors and calculates the optimal damping coefficient of each wheel suspension damper, then makes the work instruction of automatically adjusting the vehicle height and suppressing the change of the vehicle posture, This results in control of handling stability, driving stability and vehicle comfort. Continuous Damping Control System The ADC is comprised of four control units, CAN, four wheel vertical acceleration sensors, four body vertical acceleration sensors and four damper proportional valves.
Application of Sensor in Electronic Control System for Driving and Braking
1. The sensor is used in the traction control system TCS
As the driving torque of the driving wheel is too large, the driving wheel will make a sliding movement relative to the ground. According to the calculation of the safety of the drive wheel slip should not exceed 20%, so we need to control the slip of the drive wheel, the drive slip control system is the traction control system TCS. It is developed on the basis of ABS. In most cars, TCS and ABS share one ECU. The work of the sensor is to sense the slip of the car and input the obtained information to the system as an electrical signal , The system analyzes the signal input by the sensor to identify and determine the driving conditions of the car, so as to take corresponding measures.
The sensor in the automotive dynamics electronic stability system ESP application
ESP system is to make the car more comfortable maneuverability and better stability of the direction of the active safety system, the basic principle of its work is through the sensor input signal analysis, logical operation to identify the driver's car on the desired state of motion ; Through the wheel longitudinal force size and driver's expectations of the car to adjust, that the actual state of the car. It therefore requires more sensors than ABS and TCS to control the yaw motion of the car. This category of sensors that identify the driver's desire for a car includes hydraulic sensors for steering wheel sensors, lateral acceleration sensors, car yaw rate sensors, and master cylinder.
3 sensor in the ABS anti-lock brake system
Anti-lock Braking System ABS is one of the most important safety components in automotive electronics that has been developed for the longest and most widely used. It works by controlling the locking of the wheel when braking the car and ensuring the best slip (5% -20%) between the wheel and the ground. This car no matter what kind of pavement braking, the wheel and the ground can reach between the vertical peak of the adhesion coefficient and the larger side of the adhesion coefficient, which can ensure that the vehicle brake does not occur when the wheel brake hug, Loss of steering ability and other unsafe conditions, reduce the braking distance, improve the car's handling stability and safety.
NTC temperature sensor to play a role in the sensor is anti-lock brake sensor, which is mainly through the use of wheel angular velocity sensor, the detection of wheel speed, the wheel slip at 20% of the brake hydraulic pressure to improve its braking Performance, to ensure vehicle maneuverability and stability purposes. Among them, the wheel speed sensor is a very important ABS device. Its main task is to provide the ECU with reliable and accurate wheel speed in time. Without the wheel speed sensor, the system can not finish its work. At the same time, the accuracy of the wheel speed sensor will directly affect the system's work. The wheel speed sensor mainly There are electromagnetic, Hall, magnetoresistive several.
Nanjing constant Electronic Technology Co., Ltd., mainly for NTC thermistor products of all kinds of new technology, new technologies, new product development and production. Companies as "national high-tech enterprises", "private technology enterprises in Jiangsu Province." Built by the Jiangsu Provincial Science and Technology Agency approved the "Jiangsu NTC thermistor ceramic materials Engineering Research Center", the center is the leading, the only NTC thermal ceramic materials research institutions, the thermistor has a strong R & D strength.
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