Control system and method for automatically counteracting out-of-step in selection valve positioning and moving process

• Main Authors: CHEN KEYAN, LUO WEICHENG, LIN ZHIJIE, WEN JIACONG, GUO YONGJIANG
• Format: Patent
• Language: Chinese; English
• Published: 03.02.2023
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; CONTROLLING; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LIGHTING; MEASURING; MECHANICAL ENGINEERING; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; TAPS; TESTING; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The invention provides a control system and a control method for out-of-step counteracting in the positioning and moving process of a selector valve, the photoelectric pulse number is measured by utilizing the combination of a photoelectric sensor and a special coding disc for executing hole site physical alignment of the selector valve, and in the moving process of an executing mechanism, the actually measured photoelectric pulse number of the special coding disc is obtained through the photoelectric sensor; when the actually measured photoelectric pulse number is consistent with the theoretical photoelectric pulse number, the step number corresponding to the hole site offset is executed, and finally the execution hole site of the selection valve stays at the correct position, so that the out-of-step automatic offset in the positioning and moving process of the selection valve is realized; due to the fact that direct alignment of the special coding disc and the photoelectric sensor is adopted, the process is