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Optimization control circuit for simple DC hydraulic system

A DC hydraulic, optimized control technology, applied in fluid pressure actuation system components, single DC motor starter, control/regulation system, etc., can solve the problems of high cost, poor safety, high failure rate of control circuit, etc., and achieve stability Improve performance, increase safety, control circuit optimization effect

Pending Publication Date: 2017-06-13
TIANJIN ZHONGKE HUAYING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of this, the present invention aims to propose an optimized control circuit of a simple hydraulic system to solve the problems of high cost, poor safety and high failure rate of control circuits in the prior art

Method used

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  • Optimization control circuit for simple DC hydraulic system
  • Optimization control circuit for simple DC hydraulic system
  • Optimization control circuit for simple DC hydraulic system

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Embodiment Construction

[0030] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] The invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] Such as figure 2 As shown, the power supply part of the optimized control system of the DC hydraulic pressure uses the current mode PWM controller U2 of the model UC2845D8 as the main control chip, which is connected to the transformer T1, and then the 12V output of the transformer is connected to the fixed voltage of the model TLV1117-50IKVUR Regulator U1 connection. The varistors of R5 and R7 are connected in series to the input of the power supply, and the in-line capacitors of E1-E8 are connected in parallel between the positive and negative poles of the power supply; a drop-down resistor R18 and a light-emitting diode D4 are connected after the 5V power supply. Coupled with other ...

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Abstract

The invention creatively provides an optimization control circuit for a simple DC hydraulic system. The optimization control circuit comprises a power circuit and a control circuit, wherein the power circuit comprises a master control chip; an output end of the master control chip is connected with a transformer; the output end of the transformer is connected to an input end of a fixed voltage regulator to obtain 5V voltage for providing the chip with electricity; the 5V voltage is connected with a voltage dropping resistor and a light-emitting diode; the control circuit comprises a master control chip; the output end of the master control chip is connected with the input end of a PWM drive integrated chip; the PWM drive integrated chip is connected with a switch MOS transistor through a filter circuit; and a freewheel diode and a hydraulic motor are connected between the switch MOS transistor and a power supply in parallel. According to the optimization control circuit, the control circuit of the simple DC hydraulic system can be greatly optimized only by using a low-cost device; the original power circuit design can be compatible with 100-400V of DC storage battery input; separation of strong electricity and weak electricity can be achieved through a transformer; and the security of operating personnel is improved.

Description

technical field [0001] The invention belongs to the field of electric power electronics, and in particular relates to an optimized control circuit of a simple DC hydraulic system. Background technique [0002] The DC hydraulic control system is powered by a DC motor, and uses a hydraulic pump to convert mechanical energy into pressure to push hydraulic oil. By controlling various valves to change the flow direction of hydraulic oil, the hydraulic cylinder is pushed to make actions in different strokes and directions, so as to complete the different action needs of various equipment. In order to save cost, the control system of simple DC hydraulic system is still used in many fields, such as figure 1 As shown, such a simple control system is not equipped with advanced chips with computing functions such as DSP, but only uses a hardware switch or a switching circuit composed of MOS tubes to control the motor in the hydraulic system. [0003] For a hydraulic system controlled...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02P1/18F15B21/08
CPCH02M3/33507H02P1/18F15B21/08Y02E60/60
Inventor 刘丙晓刘杰程涛任德华李丹
Owner TIANJIN ZHONGKE HUAYING TECH CO LTD
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