Hitachi Automotive Systems has developed a new electronic control technology for semi-active suspension. Using this technology, it is possible to reduce the posture change of the vehicle by about 10% in the case of vehicle vibration, turning, and the like while traveling. This article refers to the address: http:// Hitachi Automotive Systems Co., Ltd. stated that in semi-active suspension, if the spring's flexibility is increased in order to reduce vehicle vibration, the function of maintaining the balance of the vehicle body during cornering and the like is reduced, thereby improving ride comfort and driving stability. Sex is a subject that is facing. This time, the company developed an algorithm that analyzes the vibration and tilt of the vehicle with higher accuracy than before, making it possible to flexibly control the spring expansion of the semi-active suspension. Specifically, an algorithm has been developed that includes more quantitative indicators that affect vehicle vibration, that is, rate of change in acceleration, to improve ride comfort. At the same time, the operation of the vehicle with high running stability is formulated, and an algorithm that can reproduce these actions is developed to improve driving stability. By embedding these two algorithms in the electronic control unit of the semi-active suspension, smooth ride comfort and improved driving stability can be achieved. Moreover, the number of sensors equipped to detect the condition of the vehicle provided to control the action of the semi-active suspension is also reduced. The number of sensors commonly used is seven, and the Hitachi Automotive system achieves performance comparable to the past by using a technology that accurately estimates the state of the vehicle, using only four sensors, thus reducing costs. In addition, Hitachi Automotive Systems introduced the details of the technology at the SAE 2015 World Congress in Detroit, USA (April 21-23, 2015).
Introduction of LED indoor module: the indoor display above the market is composed of LED indoor module. LED module is a kind of product which is widely used in LED indoor module market. LED module is a kind of product which arranges LED together according to certain rules and orders. Vision display plays an important role in the market. LED modules are used in places where large screens need to be installed, such as stages, shopping malls, doorheads, etc.
Here are some basic parameters of LED module
1. Color: at present, the main colors in the market are monochrome, full color and seven color single point control. Customers choose different colors according to the project requirements.
2. Voltage, the main voltage of the module is 5V, and the energy-saving module is 3.8V. The customer must be responsible for the power supply with accurate voltage during use, otherwise the module is easy to be damaged.
3. Working temperature: the normal working problem of LED is usually - 20 ° ~ 60 °. Under special requirements, it can be - 40 °. For other special environments, we will deal with it specially.
4. Point spacing: the LED point spacing is also the product model in the industry, and the point spacing is the distance between the center points of two lamp beads.
5. Brightness: This is an important parameter of the product. The visual display is higher than the industry standard level. It can be adjusted according to the requirements of the site.
6. Module size: module size refers to the length and width data of the module group.
8 Power: generally, the display screen has average power and maximum power. When leaving the factory, the most appropriate power will be set, and the required power can also be set according to customer requirements.
9. Refresh frequency: it means that the higher the refresh is, the better the image quality is. As a benchmark of the industry, the refresh is far higher than the industry standard.
The more mature the industry, the higher the requirements for products, the more popular customization, visual display, higher than the industry standard, the more mature customization, as long as you dare to think, we can help you achieve.
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