上海居逸电子科技发展有限公司成立于2010年，是一家专注于无刷电机控制产品研究、开发、生产及销售的高 科技企业，总部及研发基地设立于国际经济、金融、贸易、航运、科技创新中心-上海。公司技术和研发实力雄厚 ，是多项军工项目的参与者，并与国内很多大型企业和政府部门有深度合作。
公司自成立以来，始终坚持以环保节能为宗旨，诚信立业的经营原则，荟萃业界精英，将国内外先进的电子技术 、管理方法及企业经验与国内企业的具体实际相结合，为企业提供全方位的解决方案，帮助企业获得更多先进的 产品技术和生产能力，使企业在激烈的市场竞争中始终保持竞争力，实现企业快速、稳定地发展。
公司人才结构合理，拥有多名技术骨干，拥有多名硕士、学士高中级技术职称的员工。为了开发出真正适合企业 需求的智能、节能的机电自动化产品，居逸与国外一家控制芯片厂家达成合作，定制出居逸独有的直流无刷控制 芯片，为客户提供更灵活、更智能、更稳定、更高性价比的直流无刷控制方案。
最好的产品、最好的服务、最好的信誉，居逸电子已在汽车、家电、纺织、包装、印刷、激光、食品、木工、服 装、塑料、农机、园林、医疗、实验、机器人、军工等诸多领域取得辉煌成绩，完成众多大型企业的产品配套服 务，也愿意成为您最可信赖的长期合作伙伴。
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Our customization service
Automobile：
Radiator fans
A/C blower fans
window wiper
Door opener
Coolant water pump
Electric fuel pump
Home Appliances ：
Brushless DC fans
Vacuum cleaner
A/C blower fans
Circulation pump
Solar powered pump
Industrial electrical products
Electric tools
Brushless motors
Axial flow fan
Industrial air compressor
laser engraving machine
Automation equipment
Industrial robot
Our OEM/ ODM /OBM service：
*Brushless motor driver software & hardware design.
*Technical support for our control IC application.
*Special customization service.
*Control IC customization.
居逸科技拥有8名核心研发人员，包括2名硬件工程师、2名软件工程师、2名电气工程师和2名产品工程师。强大的技术团队保证了产品研发的稳定性和持续性，真正做到了自主核心技术掌控和产品的持续更新换代，目前居逸科技有5个系列超过40种的标准产品，以及上百款客户定制方案产品，涉及行业15个以上，这意味着我们可以随时对客户的各种产品要求给出最快速、最精准、最专业的设计方案。
SMT production
Once the surface mount components are soldered in place after the reflow process, which doesn't stand for completion of PCBA and the assembled board needs to be tested for functionality. Often, movement during the reflow process will result in poor connection quality or a complete lack of a connection. Shorts are also a common side effect of this movement, as misplaced components can sometimes connect portions of the circuit that should not connect.
Checking for these errors and misalignments can involve one of several different inspection methods. The most common inspection methods include:
• Manual Checks: Despite upcoming development trend of automated and smart manufacturing, manual checks are still relied on in PCB assembly process. For smaller batches, an in-person visual inspection by a designer is an effective method to ensure the quality of a PCB after the reflow process. However, this method becomes increasingly impractical and inaccurate as the number of inspected boards increases. Looking at such small components for more than an hour can lead to optical fatigue, resulting in less accurate inspections.
• Automatic Optical Inspection: Automatic optical inspection is a more appropriate inspection method for larger batches of PCBAs. An automatic optical inspection machine, also known as an AOI machine, uses a series of high-powered cameras to "see" PCBs. These cameras are arranged at different angles to view solder connections. Different quality solder connections reflect light in different ways, allowing the AOI to recognize a lower-quality solder. The AOI does this at a very high speed, allowing it to process a high quantity of PCBs in a relatively short time.
• X-ray Inspection: Yet another method of inspection involves x-rays. This is a less common inspection method — it's used most often for more complex or layered PCBs. The X-ray allows a viewer to see through layers and visualize lower layers to identify any potentially hidden problems.
The fate of a malfunctioning board depends on PCBA company's standards, they will be sent back to be cleared and reworked, or scrapped.
Whether an inspection finds one of these mistakes or not, the next step of the process is to test the part to make sure it does what it's supposed to do. This involves testing the PCB connections for quality. Boards requiring programming or calibration require even more steps to test proper functionality.
Such inspections can occur regularly after the reflow process to identify any potential problems. These regular checks can ensure that errors are found and fixed as soon as possible, which helps both the manufacturer and the designer save time, labor and materials.
