公开(公告)号：WO2015078332A1

公开(公告)日：2015-06-04

申请号：PCT/CN2014/091872

申请日：2014-11-21

Applicant: BYD COMPANY LIMITED

Inventor： LI, Wenlong ,  GUO, Qiang

IPC: B62D5/04 ,  B66F9/06

CPC classification number: B66F9/07568

Abstract: Disclosed a steering control system used for an electric forklift, an electric forklift and a method for controlling an electric forklift. The steering control system includes: a brushless DC motor (1); a steering wheel encoder (2), configured to detect a rotating speed signal and a direction signal of a steering wheel of the electric forklift; a power driver (3), connected with the brushless DC motor (1) and configured to drive the brushless DC motor (1); a sampler (4), connected with the brushless DC motor (1) and configured to sample an operation of the brushless DC motor (1) to generate a sampling signal; and a controller (5), connected with the steering wheel encoder (2), the power driver (3) and the sampler (4) respectively and configured to generate a PWM control signal according to the rotating speed signal and the direction signal of the steering wheel, the sampling signal and a predetermined control strategy to control the brushless DC motor.

Abstract translation: 公开了用于电动叉车的转向控制系统，电动叉车和用于控制电动叉车的方法。 所述转向控制系统包括：无刷直流电动机（1）; 方向盘编码器（2），被配置为检测电动叉车的方向盘的转速信号和方向信号; 电动驱动器（3），与所述无刷直流电动机（1）连接并构造成驱动所述无刷直流电动机（1）; 采样器（4），与无刷直流电动机（1）连接并被配置为对无刷直流电动机（1）的操作进行采样以产生采样信号; 以及与方向盘编码器（2）连接的控制器（5），功率驱动器（3）和采样器（4），并且被配置为根据转速信号和转速信号的方向信号生成PWM控制信号 方向盘，采样信号和预定的控制策略来控制无刷直流电动机。