Automotive electronic controllers and sensors

The automotive electronic control system is mainly composed of sensors, electronic controllers (ECUs), drivers, and control program software, which are used in conjunction with the mechanical systems on the vehicle (usually subsystems in the power system, chassis system, and body system), and use cables or radio waves to transmit information to each other, known as "mechatronics integration", such as electronic fuel injection system, anti lock braking control system, anti-skid control system, electronic suspension system, electronic automatic transmission, electronic power steering, etc

The automotive electronic control system can be roughly divided into four parts: engine electronic control system, chassis integrated control system, body electronic system, and information communication system. Among them, the first two systems are directly related to the driving performance of the car. Among them, sensors and electronic controllers play an important role.

What are the manufacturers of automotive sensors and electronic controllers both domestically and internationally now? Let's take a look together!

Automotive sensors

The definition of sensors in the national standard GB7665-87 is: devices or equipment that can sense the specified measured object and convert it into usable signals according to certain rules, usually composed of sensitive elements and conversion elements.

A sensor is a detection device that can sense the measured information and convert it into electrical signals or other required forms of information output according to certain rules, in order to meet the requirements of information transmission, processing, storage, display, recording, and control. It is the primary step in achieving automatic detection and control.

Electronic controller

A controller is the command of a computer, responsible for determining the order in which programs are executed and providing operational control commands for each component of the machine when executing instructions.

Today we will mainly learn about the drive motor controller. The drive motor controller is a device that controls the energy transfer between the power supply and the drive motor. It consists of a control signal interface circuit, a drive motor control circuit, and a drive circuit. Its main function is to control the voltage and current of the drive motor, and to control the torque, speed, and steering of the motor.

Electric vehicle drive control technology is one of the core technologies of electric vehicles, and the design of motor controllers and the development of control algorithms are key factors determining the performance of the entire drive system.

epilogue

With the development of electronic technology for automotive decoders, the engineering level of automotive electronic interference continues to improve. Conventional mechanical systems are no longer able to solve decoding problems related to automotive functional requirements and have been replaced by electronic control systems. The function of a sensor is to quantitatively provide useful electrical output signals based on the specified measured size, that is, the sensor is a converter that converts physical and chemical quantities such as light, time, electricity, temperature, pressure, and gas into signals.

Sensors, as key components of automotive electronic control systems, directly affect the technical performance of automobiles. Ordinary cars are equipped with about 10-20 sensors, while luxury cars have even more. These sensors are mainly distributed in the engine control system, chassis control system, and body control system. So choosing a suitable and durable sensor is particularly important.