Overvoltage discharge protection device and method for servo controller with adjustable protection threshold
A technology of servo controller and protection device, which is applied in the direction of emergency protection circuit device, emergency protection circuit device, circuit device, etc. for limiting overcurrent/overvoltage, and can solve problems such as low reliability and insufficient flexibility
Inactive Publication Date: 2017-08-04
XIAN UNIV OF SCI & TECH
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Problems solved by technology
However, the software release control has the following disadvantages: (1) Compared with the hardware release protection, the reliability is low
Hardware discharge control with fixed threshold Since the reference level for comparison is a fixed value, the voltage value for discharging boiled water is fixed, and the flexibility is not enough
Method used
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Embodiment Construction
[0047] Such as figure 1 As shown, the servo controller overvoltage discharge protection device with adjustable protection threshold of the present invention includes a microcontroller 2 and a power supply circuit 1 for supplying power to each power unit in the device, as well as a DC bus voltage acquisition circuit 4, a protection threshold Setting circuit 5 and comparison circuit 6; described power supply circuit 1 is connected with DC bus 9, the input terminal of described microcontroller 2 is connected with A / D conversion circuit 3, and the input terminal of described DC bus voltage acquisition circuit 4 is connected with The DC bus 9 is connected, and the output terminal of the DC bus voltage acquisition circuit 4 is connected with the input terminal of the A / D conversion circuit 3 and the input terminal of the comparison circuit 6, and the input terminal of the comparison circuit 6 is also connected with the protection threshold setting The output end of the circuit 5 is ...
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The invention discloses a servo controller overvoltage discharge protection device with adjustable protection threshold, which includes a microcontroller, a DC bus voltage acquisition circuit, a protection threshold setting circuit and a comparison circuit; the input terminal of the microcontroller is connected with an A / D conversion circuit, the input end of the DC bus voltage acquisition circuit is connected to the DC bus, the output end of the DC bus voltage acquisition circuit is connected to the input end of the A / D conversion circuit and the input end of the comparison circuit, and the input end of the comparison circuit is also connected. It is connected with the output terminal of the protection threshold value setting circuit, the output terminal of the protection threshold value setting circuit is also connected with the input terminal of the A / D conversion circuit, the output terminal of the comparison circuit is connected with an overvoltage discharge circuit, and the output terminal of the microcontroller It is connected with an inverter circuit; the invention also discloses an overvoltage discharge protection method for a servo controller with an adjustable protection threshold. The invention ensures the real-time performance of the discharge, increases the flexibility of setting the protection threshold of the discharge, and improves the reliability of the servo controller.
Description
technical field [0001] The invention belongs to the technical field of servo controller overvoltage protection, and in particular relates to an overvoltage discharge protection device and method for a servo controller with an adjustable protection threshold. Background technique [0002] The servo controller is a device used to control the servo motor to achieve high-precision positioning or follow-up motion. At present, mainstream servo controllers use microcontrollers (single chip microcomputer, DSP, etc.) as the control core to realize complete control, monitoring and protection functions. [0003] The servo controller includes a control circuit and a power circuit. The power circuit generally includes a rectifier circuit and an inverter circuit. The rectifier circuit and the inverter circuit are connected through a bus (ie, a DC bus). In order to prevent load power generation (such as braking, parallel load, etc.) If the circuit is damaged, generally the discharge chan...
Claims
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IPC IPC(8): H02H9/04H03K5/24
CPCH02H9/045H03K5/24
Inventor 张玉峰
Owner XIAN UNIV OF SCI & TECH