摘要单兵携行具是指单兵用于携带武器装备、生活用品的用具。在行军过程中，士兵往往利用携行具背负上百公斤的物资，较高的负担量严重影响他们的作战效能和持久能力。电动助力携行具是一种将电动机与传统携行具结合的一种新型设备，它能补偿负重能量消耗，且其结构具有支撑作用。

本课题主要目的是设计一款能自动控制上坡助力，下坡制动的电动助力携行具控制电路，使助力携行具根据坡度调节输出转矩，以稳定速度跟随使用者。本文首先分析电动助力携行具不同坡度的受力情况，结合目标参数选择电机和调速手段，并根据电机机械特性曲线确定坡度与调速参数的函数关系，寻找相应的控制策略。最后，设计控制电路与程序实现所需功能，并通过软件仿真验证。42477

关键词  携行具，助力，直流电动机，控制电路

毕业设计说明书外文摘要

Title  Research on The Electromotor Control Circuit of Electric Power Load Carrier

Abstract

Inpidual load carrier refers to devices used by inpidual soldiers to carry weapons and supplies. Soldiers usually load their carriers with utensils of more than 100 kg when marching, which adversely affect their military operation efficiency and persistence. Electric power load carrier serves as an innovative equipment, combining electromotor and traditional carrier, to compensate the loading energy consumption, and its structure also has a supporting function.

The main purpose of this topic is to design the control circuit of electric power load carrier which automatically commands the electric power load carrier, enabling the device provide power in the upgrade and brake in the downgrade. This means that the device should adjust the output torque on the road gradient basis while following the users at a steady speed. This paper first analyses the force situation of electric power load carrier corresponding to different gradients, and combines the analysis with target parameters to select the electromotor and the speed-control strategy. This following part, based on  the mechanical character curve of the selected electromotor, determines the mathematical relationship between gradient and the speed-control parameters, and then accordingly figures out the method for automatic control. Eventually, the control circuit and code are designed to achieve the target functions, which is tested by software simulation.

Keywords:   load carrier, assistance, direct-current motor, control circuit

目录

1  绪论 1

1.1  课题的来源与其研究目的 1

1.2  电动助力携行具难点分析及解决方案 3

1.2.1  电动助力携行具研究难点 4

1.2.2  研究难点的解决方案 5

1.3  总体设计思路 5

1.4  本章小结 6

2  助力携行具受力分析 7

2.1  引言 7

2.2  考虑摩擦阻力偶时的平衡问题 8

2.2.1  接触变形的柔性约束模型 8

2.2.2  滚动阻力偶 8

2.3  助力携行具平衡方程 9

2.4  本章小结 13

3  电动机的选型和调速策略 14

3.1  引言 14