POC power bucket
POC is the abbreviation of proof of concept, which means to provide evidence for opinions. It is a set of suggested electronic models, which can be used to demonstrate the design of teams and customers, and allow to evaluate and confirm the conceptual design scheme. The evaluation of POC may cause the adjustment of specifications and design
function:
the commitment of design and the opinions recognized by all will be recorded in the design adjustment document for future reference. In this way, POC continues to develop. If you need help completing these tasks, you can find assistance resources at Queensland University
extended data:
evaluation and verification of POC
the process of evaluation and verification is to seek feedback from risk takers through POC and filing design documents. Through POC evaluation, risk takers may put forward requirements for adjusting specifications and design
sometimes, e to design defects or inappropriate places, the design team may have to go back to the drawing board. Customers may decide to stop designing or look for other teams because the design does not pay enough attention to the needs of customers and users, or because of the instability of customer needs
sometimes the change is caused by the customer organization or project decision-maker. Generally, at the end of the evaluation and verification process, the design commitment and the opinions accepted by all will be recorded in the design documents
this is often an important milestone in the life cycle of proct development. After the evaluation and verification, POC can continue to develop
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由v^2=2gh v=8.12m/s
由动量定理得
N-mg=mv/t=pv1*v
N=mg+pv1*v=8.32+17.2=25.4N
1, "consistent texture lock", select "use hardware" for this option
2, "triple buffering", this option is effective after the vertical synchronization is turned on, and it is generally recommended to turn it off
3, "anisotropic filtering", this option can significantly improve the image quality of the game. According to the level of your own graphics card, choose 4x for low-end graphics card, 8x for middle end graphics card, and 16x for high-end graphics card
4, "vertical synchronization", this option can eliminate the image "horizontal shift", but the hardware requirements are very high, so it is generally recommended to "forcibly close"
5. Multi display / hybrid GPU acceleration. This option is only effective when using multiple display devices. Generally, the default multi display performance mode can be maintained
6, "smoothing - mode", this option is to select whether to forcibly control the anti aliasing of the game in the driver. If the game itself has aa option, you can select "application controlled"; If you want to force settings in the driver, you should select replace any application settings
7, "smoothing gray correction", this option can make the AA effect better, with little performance degradation. It is generally recommended to "on"
8, "smoothing settings", which can be adjusted only when "replace any application settings" is selected. 2x, 4x, 8xq and 16xq are Ms sampling, and 8x and 16x are CS sampling; Among them, the performance of MS sampling decreased greatly, and CS sampling achieved a balance in effect and performance; This option is selected according to the performance of the graphics card
9, "smoothing transparency", this option is to set transparent anti aliasing mode. Transparent anti aliasing mode can achieve non edge AA, and the effect is better; The multi sampling performance is high and the image quality is slightly weak. The super sampling performance is low and the image quality is good. Please choose according to the requirements of the game screen
10, "force to be mipmaps", select "None"
11. Select "off" for "extension limit"
12, "texture filtering anisotropic sampling optimization", this option determines whether to use the optimization algorithm for anisotropic filtering. Select "on" to improve a little bit of performance and lose a little bit of image quality, and select "off" to ensure the highest image quality
13, "texture filtering - negative LOD offset", the option is "lock"
14, "texture filtering quality", this option can control other "texture filtering" options in one step. In pursuit of image quality, "high quality" is generally recommended
15, "texture filtering trilinear filtering", the effect of this option is similar to "anisotropic filtering optimization", which can be selected according to your own screen requirements.
POC particle oxidation catalyst (POC) = particle oxidation catalyst
different from gasoline vehicles, only a few new diesel vehicles adopt exhaust after treatment technology. Automobile diesel engine manufacturers have been improving the engine and its control system to meet the emission standards
The most difficult part is to rece the emission of particulates and nitrogen oxides at the same time in the low temperature lean burn environmentthe best effect can be achieved by using diesel lean burn NOx removal catalyst and diesel particulate filter
although this technology already exists, it is very expensive. In most cases, advanced particulate oxidation catalyst POC is used, which is characterized by particulate combustion
The catalyst consists of a new low temperature coating and a metal carrier called Ecocat. At the same time, the conversion of HC and CO can reach 80% - 90%has been tested on several light and heavy engines and vehicles driven by this type of engine (engines up to Euro 0 to Euro 4 standards). The biggest advantage of this scheme is that the price is relatively cheap and maintenance is not necessary. But the sulfur content in diesel oil should be low
POC is a catalytic oxidizer for particulate matter. The working principle is to catch up the particulate matter, and then burn it through the high temperature of exhaust gas (250 ℃ - 500 ℃), so as to achieve the purpose of recing the particulate matter. POC is widely used in light truck. In addition, POC can regenerate actively and DPF needs human intervention
particulate oxidation catalytic converter (POC) can be used to rece particulate matter in diesel exhaust, which belongs to the category of oxidation catalytic converter. The conversion efficiency of particulate matter is higher than doc, but lower than DPF system. The principle is to make the exhaust gas pass through a multi fold channel without blocking, and the particles are adsorbed in the POC, and the accumulated particles are removed by oxidation combustion
because POC requires a higher working temperature, it needs to be used in combination with DOC, which is called PM Kat system by European heavy truck enterprise man, that is, DOC and POC are integrated. Under the oxidation of DOC catalyst, no in the exhaust gas combines with oxygen to form nitrogen dioxide, and the original NO2 in the exhaust gas enters the POC together. Under the action of the catalyst, the molecular bond of N O2 breaks at a lower temperature, and the generated o burns with the captured C particles to form C O2, thus effectively removing the captured particles
POC can only filter the larger carbon particles, but the ability to capture the carbon particles below PM2.5 is low, and the efficiency of recing PM is 30% - 80%, which is better than doc and lower than DPF. The price of POC is lower than that of DPF and higher than that of doc
