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Combined process after automobile wiring harness segment manufacturing

时间:2022-05-19 17:39:32 Hits:

The automobile wiring harness is the network main body of the automobile circuit, and there is no automobile circuit without the wiring harness. With the improvement of people's requirements for automobile safety, comfort, economy and emission, automobile wiring harnesses are becoming more and more complex. At present, whether it is a high-end luxury car or an economical ordinary car, the form of the wiring harness is basically the same, which is composed of wires, connectors and wrapping tapes.

        The main feature of the integrated pressure sensor is that it has all the execution algorithms in a single and small silicon chip. This small size allows it to be installed in automotive electronic modules. When the module is designed, it is packaged with metal to improve immunity to electromagnetic interference. ability. However, such a cost is relatively high and is not conducive to installation.

        There is an internal short circuit. The wires with internal short-circuit nodes in the automobile wiring harness appear in pairs or multiples. Although the root end inputs a high-level signal and the blade end responds, if the response signal is described by a matrix, it will also cause abnormal matrix arrangement.

        If it is directly applied to the optimization framework, a time-varying off-diagonal equation related to a stiffness matrix needs to be solved, and the computational cost will be greatly increased. There is also a controller that handles the harness contact problem in an optimization framework, although it is suitable for large-step optimizations, but the equations need to be solved to avoid sticking.

        In data transmission and reception, the signals that need to be checked and summed are transmitted correctly. The sender superimposes the error detection symbol on the last data bit by a prescribed method and outputs it, and the receiver analyzes the acquired data to confirm whether the received error detection symbol is correct. Error detection symbols are used for two purposes, parity checking and cyclic redundancy checking.

        Providing travel route planning is an important auxiliary function of car navigation system, which includes automatic route planning and manual route design. Automatic route planning is that the driver determines the starting point and destination, and the computer software automatically designs the optimal driving route according to the requirements, including the calculation of the fastest route, the simplest route, and the route with the least number of highway skeleton segments.

        After processing the driver's operation signal, the vehicle controller provides a target torque and speed to the drive motor according to the vehicle's operating characteristics and safety strategy, forming a torque-speed double closed-loop control.

        The fuel supply method of the car adopts electronically controlled multi-point sequential injection. The electronically controlled gasoline injector injects gasoline directly into the intake port, where it is mixed with air before entering the combustion chamber. Because the working environment of the gasoline injector is relatively special, after long-term operation, fouling will form on the nozzle and needle valve, and in severe cases, the nozzle will be blocked, resulting in poor gasoline injection, thus changing the mixture ratio of gasoline and air, making the engine Does not work under normal conditions.

        The assembly and maintenance of automobile wiring harness is convenient, and the wiring harness is generally manufactured in segments. When assembling, the multi-segment wiring harness is connected through the terminals to form the whole vehicle wiring harness, which is arranged on the car, but the fewer segments of the wiring harness, the better; in this way, it can avoid the voltage drop caused by too many terminals and the phenomenon that it is easy to cause poor contact. Generally, it can be divided into cab wire harness assembly and chassis wire harness assembly, and chassis wire harness assembly is generally divided into engine wire harness assembly and frame wire harness assembly.

        The ring structure is to connect the automotive wiring harness design sites into a ring, and the data transmission is performed in sequence. Transfer the information data to be transmitted until it reaches its necessary network point. The data output from each network point will not collide at the same time, and can maintain stable transmission. However, the failure of one site will affect the whole, so take necessary measures.