机器人和机械手臂有什么不同？

机械手臂是机械人技术领域中得到最广泛实际应用的自动化机械装置，在工业制造、医学治疗、娱乐服务、半导体制造以及太空探索等领域都能见到它的身影。尽管它们的形态各有不同，但它们都有一个共同的特点，就是能够接受指令，精确地定位到三维（或二维）空间上的某一点进行作业。机器人（Robot）是自动执行工作的机器装置。它既可以接受人类指挥，又可以运行预先编排的程序，也可以根据以人工智能技术制定的原则纲领行动。

它的任务是协助或取代人类工作的工作，例如生产业、建筑业，或是危险的工作。机器人可以是高级整合控制论、机械电子、计算机、材料和仿生学的产物。目前在工业、医学等领域中均有重要用途。一般说来，人们都可以接受这种说法，即机器人是靠自身动力和控制能力来实现各种功能的一种机器。

'Tactile' is touch based (so what we feel by means of the light sensors that we have in our hands and bodies which enable us to feel the texture of things) unlike the bigger force felt by the arm (see Haptic); whereas 'Haptic' is force based (so the greater force that we can feel with our arm muscles when holding heavy objects).

As a typical example, let's say at two different instances, we hold in our hands 2 different heavy objects of the same weight, but which are composed of different materials, especially at the exterior (so let's say e.g. a 2 Kg iron ball in the first instance, and a 2 Kg iron ball coated with leather or rubber, say). Thus in those two cases, even though our arm would feel the same "haptic" force for both the (all-iron & leather-coated) balls; but yet because of their unique different textures, each of them would possess a unique different "tactile" (touch) sensation associated with it.

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