Chengdu Panfeng Technology briefly analyzes the application of modern automotive electronic control technology in automobiles

With the rapid development of electronic technology, sensor technology and computer technology, automotive electronic control technology has become more mature and perfect, and has been widely used in vehicles. Many electronic devices have become its standard configuration or optional configuration. Modern automobiles have widely adopted automobile electronic control technology in order to improve automobile power, economy, safety, comfort and reduce exhaust emission pollution. Automotive electronic control technology is an important trend and symbol of the development of modern automobile technology. From the engine's fuel injection ignition control, air intake control, emission control, fault self-diagnosis to the chassis' transmission system, steering and braking systems, and body auxiliary devices, automotive electronics are commonly used. Control Technology.
Next, we will understand the application of automotive electronic control technology in automobiles from three aspects: the advantages of automotive electronic control technology, the composition of automotive electronic control systems, and the application of automotive electronic control technology to automotive electronic control systems.
Advantages of the application of automobile electronic control technology
Reduce automobile repair time Self-diagnosis system
Fuel-saving electronic control ignition device Electronic control of gasoline injection and mixture concentration control device cylinder closing control fuel-saving device Idle speed control, exhaust gas recirculation control, knock control
Sensor-controlled engine air-fuel ratio closed-loop control system to reduce air pollution
Reduce traffic accidents, prevent drunk driving and drowsy electronic devices to check people's psychological state and reaction time electronic devices, electronic control, anti-skid devices, intelligent driving information systems, main parameters of automobiles, alarm devices and airbags
Improving ride comfort, ride comfort, noise control, air temperature and humidity adjustment, and habitability control
Two application automobiles System composition of electronic control technology
Detection feedback unit
Its function is to detect controlled parameters or other intermediate variables through various sensors and then amplify and convert them for display or as feedback signals.
The command and signal processing unit accepts human-machine dialogue random instructions or fixed-value program instructions and receives feedback signals. It generally has processing functions such as signal comparison and transformation operation logic. Traditional command and signal processing units mostly use analog circuits. With the development of microelectronics technology and computer technology, engineering control systems have provided the possibility of using digital computer command and signal processing units. Most of the instruction and signal processing units used in automobiles are microprocessors.
The function of the conversion amplification unit is to mutually convert and linearly amplify the command signals in different ways so that the amplified power is enough to control the actuator and drive the controlled object.
Actuator The component that directly drives the controlled object can be an electromagnetic component such as an electromagnet motor, or a hydraulic or pneumatic component such as a hydraulic or pneumatic working cylinder and motor. In order to match the driving characteristics with the load characteristics of the controlled object, a transmission mechanism such as a combination of a hydraulic motor and a planetary gear transmission can be added.
The power source that provides energy to each unit usually includes two types: electrical power source and fluid power source.
Three Introduction to Automotive Electronic Control Systems Applying Automotive Electronic Control Technology
Engine and power transmission centralized control systems include electronically controlled ignition devices such as engine centralized control systems, automatic transmission control systems, brake anti-lock braking systems, and traction control systems. Electronically controlled gasoline injection and exhaust gas recirculation control idle speed control.
Chassis comprehensive control and safety systems include vehicle stability control system, active body posture control system, cruise control system, anti-collision warning system, driver intelligent support system, etc., electronically controlled automatic transmission, braking, anti-lock, traction control, drive anti-skid and vehicle lateral Stability control system Electronically controlled suspension Cruise control system Airbag Radar Anti-collision system Drive anti-skid control system Seat belt control system Headlight control system Intelligent body electronic system Automatically adjusting seat system Intelligent headlight system Car night vision system Electronic door locks and Anti-theft system, etc.
Communication and information/entertainment systems include intelligent car navigation systems, voice recognition systems, car maintenance data transmission systems, car audio systems, real-time traffic information consultation systems, dynamic vehicle tracking and management systems, information service systems, etc. Information display and alarm System language information system vehicle navigation system and positioning system communication system.
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