Speed regulation and control device of steam locomotive

Abstract

The invention relates to a speed regulation and control device of a steam locomotive. The speed regulation and control device comprises a vehicle and a controller, a battery and an acceleration sensor; the acceleration sensor detects the driving acceleration of the vehicle once at a time interval of less than 0.5 second and generates a driving acceleration value; the main controller is electrically connected to the driving motor, the battery and the acceleration sensor; the main controller is provided with a constant-speed driving set value; the main controller receives a driving accelerationvalue, detected by the acceleration sensor, of the vehicle; the calculating unit converts the running acceleration value and generates a converted vehicle speed value, and the main controller comparesthe converted vehicle speed value with a constant-speed running set value and outputs an adjusting signal to the driving motor and the battery, so that the energy-saving and power-saving effects thatthe vehicle is prevented from being accelerated unevenly between large speed differences are achieved.

Description

technical field [0001] The invention relates to the technical field of vehicle speed control, in particular to a speed regulation device for vehicle constant speed control. Background technique [0002] At present, the use of electric energy for auxiliary power of various vehicles to drive and control the speed of vehicles is becoming more and more common, from early mopeds to recent electric locomotives, and even four-wheel trams. [0003] Moreover, whether it is the speed control of a two-wheeled electric vehicle or a four-wheeled tram, the control function of constant speed cruise is indispensable. Generally speaking, a speed sensor is used to detect the driving speed of the vehicle, and a control unit with a built-in The default value of constant speed driving is connected to the driving motor and battery, and then the detected vehicle speed is sent to the control unit of the vehicle, so that the control unit compares the driving speed of the vehicle with the default val...

AI Technical Summary

Problems solved by technology

[0011] exist Figure 7 Among them, the speed sensor used to detect the driving speed of the vehicle needs to rotate more than two times through the wheel rim, so that the time point for the control unit to confirm the speed reduction is relatively behind, so that the speed of the vehicle traveling from point A to point B in the figure drops to 18km / h hr; at this time, the control unit starts to increase the power supply for acceleration, and because the speed measurement mechanism through the wheel rim rotation causes the speed measurement time point to lag behind, the acceleration will often be too high, and the speed of the vehicle will greatly exceed the default value of 20 (km / hr) for constant speed driving, such as As shown at point C in the figure, it is possible to increase the vehicle speed to 25 (km / hr)

[0012] In addition, if Image 6 As shown, for a general vehicle that uses a speed sensor to detect the driving speed for constant speed control, the power model (Power Model) is based on the condition that one piece of data is transmitted every 0.5 seconds. The vehicle speed is represented by a thick black line in the figure The current is represented by a thin black line. The time gap of the detection and sampling through the rim rotation speed measurement is too large, so that the vehicle accelerates unevenly between large speed gaps, and often there will be repetitive excessive acceleration. The formation of the relatively power-consuming area shown in the hatched area in the figure not only causes the instability of the vehicle speed and unnecessary waste of electric energy, but also the biggest disadvantage of using the speed sensor to detect the driving speed for the general vehicle to perform the constant speed control operation.

[0013] Therefore, how to innovate and invent for the general vehicles that use the speed sensor to detect the vehicle's driving speed for constant speed control. The Difficulties of Inventing What You Want to Solve

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