1·The technical reformation method of double housing planer is described in detail. The main problem solved by the method is introduced.
详细说明了龙门刨床的技术改造方法，介绍了此方法解决的主要问题。
2·Base on the analysis and research of the original control system of double housing planer (B2012A), designed a opposing electromotance feedback control system.
在分析和研究龙门刨(B2 0 12a)原控制系统的基础上，设计了龙门刨床反电动势反馈控制系统。
3·Base on the analysis and research of the original control system of double housing planer (B2012A), according to its special technics, designed a digital direct current speed control system.
在分析和研究龙门刨床(B2012A)原控制系统的基础上，根据厂方现场生产工艺的特殊要求，设计了龙门刨床全数字直流调速系统。