This paper introduces a tension control system for spinning machine, explains basic theory of tension control system, gives detect circuit of tension roll displacement with rotary encoder.
Swivel encoder is adopted to detectthe lengt of welding pipe and tube. PLC is used to control the length precison of welding pipe and decrease electric accident caused by flying saw.
Power output due to concentric and eccentric contractions was measured using a power measurement instrument with a rotary encoder attached to the pulley.
This paper introduces a tension control system for spinning machine, explains basic theory of tension control system, gives detect circuit of tension roll displacement with rotary encoder. Connecting inverter DC links in parallel, sloves regenerative power,gives detailed circuit of synchronizing run control system.
Electric drive system with several units is a common form of the control system of drive. The traditional analog synchronization system and its limitations are discussed in this paper. Followed by the introduction of a kind of digital type synchronous control system. The principle of the synchronous controller with this characteristics is then presented. Leading a digit speed deviation feedback into units with encoders can markedly improve the precise of synchronous control.