Heavy planning machine worktable should be designed to mee the three requirements:diversification in electrical control running,high cost performance and reliability in running.

The feeding system of the light closed planer is required to not only meet the needs of processing techniques maximatily, nut also be in concordance with the style of the light closed planer.

Method of saving electricity and eliminating the noise while B2012 type planer low loading;

PLC Controlled AC Variable-Frequency Stepless Speed Control System for Planer;

Development of the energy feedback device on the control system of gantry planer;

The application of frequency conversion speed adjustment system and PLC in the gantry planer;

This paper introduces the characteristic of the AC speed regulation system of the large-scale gantry planer and realizes the fast-braking of the main transmission system with a feed-brake device.

Transformation of old equipment-closed planer by using switch reluctance machine increases milling function,it can not only saves fund but also increase work efficiency.

A research on adaptive speed controller of a 4M gantry planning machine;

The control system of a 4m gantry planning machine is repacked,and the standard speed-regulator in the system is replaced with an adaptive speed-controller,so an adaptive speed-control system is formed.