A walking electric industrial vehicle electric steering control device and method

Abstract

The invention discloses an electric steering control device and method for a walking type electric industrial vehicle. The electric steering control device comprises a steering control vane handle, an electric steering part, a steering processor, a steering control angle sensor and a steering executing angle sensor, wherein the steering control angle sensor is used for sensing a rotating angle X of the steering control vane handle; the steering executing angle sensor is used for sensing a rotating angle Y of the electric steering part; when the steering control vane handle is rotated by an operator, a rotating angle signal is inputted to the steering processor by the steering control angle sensor; the electric steering part is used for receiving a control signal outputted by the steering processor and correspondingly executing the rotating angle Y; the rotating angle Y is changed following the rotating angle X; and a value of Y:X when X is within a preset control resetting angle scope is less than the value of Y:X when X is beyond the control resetting angle scope. The electric steering control device provided by the invention is used for reducing the difficulty in controlling the vehicle to run straightly and preventing a turning radius of the vehicle from being overlarge, thereby forming ideal balance between the straight running and the turning radius.

Description

technical field [0001] The invention relates to the technical field of industrial vehicles, and more specifically relates to an electric steering control device and method for a pedestrian electric industrial vehicle. Background technique [0002] Existing walking-type electric industrial vehicles, such as stackers, trucks, etc., are turned by the steering tiller to control the driving wheels. Generally, in order to complete the turning faster and with a smaller turning radius, the driving The steering angle of the wheel is 180 degrees or more, and the steering angle of the tiller handle by steering is usually 180 degrees or less for ergonomic reasons. In traditional industrial vehicles, there is generally a fixed proportional relationship between the steering angle of the steering handle and the steering angle of the drive wheels. During the driving process of electric industrial vehicles, when running in a straight line is required, the steering handle should be at the id...

AI Technical Summary

Problems solved by technology

During the driving process of the electric industrial vehicle, when it is necessary to run in a straight line, the steering handle should be at the ideal mechanical zero position at this time. However, due to the friction of the ground, the friction between mechanical parts, and the unevenness of the ground, the The steering tiller has a slight deviation. At this time, it is necessary to make small and frequent adjustments to the steering tiller, and then make a small steering by the driving wheel to keep the vehicle running straight. For ergonomics, It is difficult to adjust the direction of the steering handle very slightly by hand during driving, especially when driving in a straight line, the speed of the vehicle is relatively high, so the vehicle will usually move in an obvious "S" shape

The utility model patent with the Chinese patent number CN201020661063.9 discloses an electronically controlled engineering vehicle power steering system with adjustable steering sensitivity. The system connects and controls the various components of the steering system through microelectronic technology to replace the traditional mechanical or hydraulic Connect, use the sensor to record the driver's steering data, and then transmit the signal to the electronic control unit on the car through the data line. The electronic control unit will make a judgment based on these signals and control the steering angle of the vehicle. However, it also has shortcomings. One is that its structure is very complicated, and it uses proportional valves, fuel tanks, etc., which are very different from existing vehicle control devices, and its price is expensive, the failure rate is high, and its cost is very high. More importantly, it does not solve the problem of reducing The balance between the difficulty of maneuvering the vehicle in a straight line and solving the problem of excessive turning radius of the vehicle

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