Double closed loop control direct-current speed regulation system based on linear driving

Abstract

The invention discloses a double closed loop control direct-current speed regulation system based on linear driving. The double closed loop control direct-current speed regulation system based on linear driving is characterized by being composed of a transformer T, a rectification filter circuit, a double closed loop control circuit connected with the output end of the rectification filter circuit, a fine adjustment circuit connected with the double closed loop control circuit, a linear driving circuit connected with the secondary side of the transformer T, a voltage stabilizing circuit connected with the linear driving circuit, an operational amplification circuit connected with the output end of the voltage stabilizing circuit, and an output circuit connected with the output end of the operational amplification circuit, both the double closed loop control circuit and the fine adjustment circuit are connected with the primary side of the transformer T, the liner driving circuit is composed of a driving chip U2, a triode VT3, a triode VT4, a triode VT5, a triode VT6, a polar capacitor C10 and the like, the positive electrode of the polar capacitor C10 is connected with a dotted terminal of an inductance coil L of the secondary side of the transformer T, and the negative electrode of the polar capacitor C10 passes through a resistor R16 and then is connected with an IN1 pin of the driving chip U2. According to the double closed loop control direct-current speed regulation system based on linear driving, due to the fact that the linear driving circuit is adopted, the speed regulation system is made more stable.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a linear drive-based double-closed-loop control DC speed regulation system. Background technique [0002] At present, mechanization has been used in many production activities. Due to the requirements of mechanical processing and operation, the motor is often in the transition process of starting, braking, and reversing, so the time in the starting and braking process is largely It determines the production efficiency of the machine. In order to shorten this part of the time, the speed negative feedback single closed-loop speed regulation system of the proportional integral regulator is used to realize it at present. However, the dynamic and static performance of the existing speed control system is not very good, the stability is not high, and it is easy to be disturbed by the power grid, thereby affecting the speed of the machine. Contents of the invention [0003] The purpose of...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect that the current speed regulation system used in production machinery is not stable enough to affect the rotating speed of the machinery, and to provide a double closed-loop control DC regulator based on linear drive with good dynamic and static performance and high stability. speed system

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