Power amplifier for small two-axis theodolite

Abstract

The invention discloses a power amplifier for a small two-axis theodolite. The power amplifier comprises an MSK4201 chip U1, wherein the third pin of the MSK4201 chip U1 is connected to a power supplyterminal VCC and is grounded through a ceramic capacitor C3 and an electrolytic capacitor C4 that are connected in parallel with each other, the first pin of the MSK4201 chip U1 is connected to a motor power supply terminal V+ and is grounded through a ceramic capacitor C1 and an electrolytic capacitor C2 that are connected in parallel with each other, the second pin and the seventh pin of the MSK4201 chip U1 are used as the two output ends of the power amplifier, and a resistor R3 and a capacitor C5 connected in series are connected between the second pin and the seventh pin of the MSK4201 chip U1. The power amplifier can reduce system interference, improve system integration, reduce the complexity of system design, reduce the design difficulty of the servo system, and reduce the cost.

Description

technical field [0001] The invention relates to a small two-axis theodolite, in particular to a power amplifier for the small two-axis theodolite. Background technique [0002] The power amplifier is an important part of the theodolite servo system, and the azimuth and pitch axis motor of the theodolite is driven by the power amplifier to rotate. At present, the power amplifiers used in the equipment are all single-axis power amplifiers, which are designed with IPM modules inside, so the volume is relatively large. Moreover, the turn-off and turn-on of the IGBT will cause a lot of noise, so it will affect other electronic equipment. If 4-way PWM drive is used, timing design such as dead zone and phase needs to be carried out. Although it can ensure the normal operation of the power amplifier, but Increased design difficulty. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a system that can reduce system interfer...

AI Technical Summary

Problems solved by technology

[0002] The power amplifier is an important part of the theodolite servo system, and the azimuth and pitch axis motor of the theodolite is driven by the power amplifier to rotate. At present, the power amplifiers used in the equipment are all single-axis power amplifiers, which are designed with IPM modules inside, so the volume is relatively large. Moreover, the turn-off and turn-on of the IGBT will cause a lot of noise, so it will affect other electronic equipment. If 4-way PWM drive is used, timing design such as dead zone and phase needs to be carried out. Although the normal operation of the power amplifier can be guaranteed, the Increased design difficulty

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