CONSTANT POWER AND DOUBLE SPEED CONTROL SYSTEM AND CONTROL METHOD BASED ON DIRECT-CURRENT BRUSHLESS ELECTRIC TOOL

摘要

Disclosed are a constant power and double speed control system and control method based on a direct-current brushless electric tool. The control system comprises a two-gear rotation speed switching module, a constant power and double speed control module, a motor output power control module and an electrical inductance device. The electrical inductance device collects supply voltage, work current and motor speed information of a motor in running. The two-gear rotation speed switching module provides different rotation speed options. The constant power and double speed control module reads and judges information sent by the two-gear rotation speed switching module and the electrical inductance device. The motor output power control module regulates the output power of the motor according to the judged information of the constant power and double speed control module. In this way, the constant power and double speed control system and control method based on the direct-current brushless electric tool of the present invention can well adapt to a load, save energy, and effectively ensure that the output power of a matched battery system is in a normal range so as to achieve protection for the battery system.