According to the requirements of, the technological reconstruction of lockingcontrol of shaft signal and machine operation equipment is carried out.
根据《煤矿安全规程》规定的要求，对井口信号与操车设备实施闭锁控制的技术改造。
2
A step motor phase lockingcontrol system and it's velocity error damping method is presented in this paper. A convenient method for engineering design is also given.
This control system samples the speed of each wheel on a vehicle and controls each brake's pressure (to stop it from locking up) at up to 20 times per second.