Servo Control System Heat Dissipation via Segmented Driving Circuit
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Solution Overview
Problem
Conventional servo control systems face issues with poor heat dissipation and limited driving capability when using three-phase brushless motors, particularly in high-power applications.
Innovation Solution
A servo control system is designed with a main control module and a driving module that includes a driving circuit and an electronic switch circuit, where the driving circuit receives control signals and outputs driving signals to control the motor, and the electronic switch circuit uses MOS transistors to manage the motor's rotation direction, enhancing heat dissipation and driving capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional servo control system uses three-phase brushless driving motors to drive high power motors, then the driving capability is improved, but the heat dissipation becomes poor
Solution Approach 1:
The patent divides the driving circuit into multiple independent half-bridge circuits, each with its own MOS transistor switches and current sampling resistors. This segmentation allows for better heat distribution and dissipation across multiple components rather than concentrating heat in a single high-power circuit, while maintaining the high driving capability through parallel operation of the segmented circuits
Solution Approach 2:
The patent introduces current sampling resistors as intermediary components between the power circuit and control circuit. These resistors enable precise current detection without directly handling high power, allowing the control system to manage heat generation through precise current control while maintaining high driving capability through the intermediary measurement function
2Device complexity
If the driving circuit directly controls the driving motor, then the control simplicity is improved, but the driving capability is limited
Solution Approach 1:
The control system is segmented into a main control module that generates control signals and a driving module that converts these signals into motor drive signals. This segmentation allows the control logic to remain simple in the main module while the driving module handles the complexity of high-power motor control, thereby maintaining control simplicity while achieving high driving capability
Solution Approach 2:
The patent introduces a driving module as an intermediary between the main control module and the motor. This driving module contains the complex power switching circuitry and current sampling logic, allowing the main control module to maintain simplicity while the intermediary driving module provides the necessary high driving capability through its specialized circuit design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration improves heat dissipation and strengthens the driving capability of the servo control system, allowing for more efficient operation of high-power motors.
Implementation Method 1
the electronic switch circuit includes a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, a fifth MOS transistor and a sixth MOS transistor. Control terminals of the first MOS transistor, the second MOS transistor, the third MOS transistor, the fourth MOS transistor, the fifth MOS transistor and the sixth MOS transistor are coupled to the driving circuit
Implementation Method 2
the electronic switch circuit outputs a driving pulse to the driving motor according to the driving signal, to control the driving motor to rotate
Data Source
AI summary
The present invention discloses a servo control system and a robot. The servo control system is applied to a servo and includes a main control module and a driving module including a driving circuit and an electronic switch circuit. The driving circuit is coupled to the main control module. The electronic switch circuit is coupled between the driving circuit and a driving motor of the servo. Wherein, the driving circuit receives a control signal outputted by the main control module and outputs a driving signal according to the control signal. The electronic switch circuit outputs a driving pulse to the driving motor according to the driving signal, to control the rotation of the driving motor. In the above manner, it can be convenient for heat dissipation and strengthens the driving capability.