Torque sensors are able to convert the physical change of torque into accurate electrical signals, which are mainly used in the power range, and have the characteristics of long service life, high accuracy and strong reliability.
Torque sensors are not common in our daily lives, but their use is very important. At present, the mature detection method of torque sensor torque testing is strain electric measurement skills.
Strain glue is used to paste the measured elastic shaft to form a strain bridge. If a working power supply is supplied to the strain bridge, it is possible to test the electrical signal of the change of the elastic shaft, which is the basic form of torque sensor.
Torque sensors have a very important use in automobiles. The torque sensor on the car looks at the changing deformation of the change lever and converts it into an electronic signal that is transmitted to the electric power steering system under the battery.
The sensor consists of phase splitter units 1 and 2 and a change rod. Sensor 1 is located at the steering spindle and sensor 2 is located at the pinion shaft. After the change rod is rotated, the two phase splitter units generate a relative viewpoint, and the converted voltage signal is transmitted to the electric power steering system. The electric power steering system supplies the corresponding working voltage to the EPS steering motor according to the relative orientation of the two units. Of course, viewpoint sensors are also used on it.
As long as the electric power steering system starts the motor to generate power when it needs to steer, it can reduce the fuel consumption of the engine; It can provide the best power under various driving conditions, the motor output torque through the action of the transmission device, and the power transmission device helps the system to disturb, improve the steering characteristics of the car, and improve the automatic safety of the car; There is no hydraulic circuit, it is easier to adjust and detect, the installation automation is higher, and after setting different programs, it can quickly match different models and shorten the production and development cycle; There is no oil leakage problem, and environmental pollution is reduced.
The electric power steering system mainly passes through the torque sensor, detects the torque or angle size and direction of the steering wheel through the torque sensor, converts the required information into digital signals and inputs it into the control unit, and then calculates these signals by the control unit to obtain the torque that adapts to the driving conditions, and finally issues the instruction to drive the motor to work, and the motor output torque passes through the role of the transmission device.
I believe that it is not difficult to see that torque sensors are very important. The damage of the torque sensor on the car will directly lead to the loss of steering function during driving in the car, making the steering failure stiff. Therefore, it can be seen that the torque sensor plays a very important role in automobile safety, and the quality of the torque sensor will directly determine the safety factor of driving.
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