<ul>
	<li style="list-style-type:disc; text-align:justify"><span style="font-size:14px"><span style="color:#000000">In robotics, reliability is defined in terms of the probability of the robot working correctly under defined working conditions. In industrial applications, reliability is linked to the term- MTTF (Mean Time To Failure) which means the average time of normal working of a robot before it faces a failure and is defined as <img alt="&lt;math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;mi&gt;F&lt;/mi&gt;&lt;mo&gt;&amp;#xA0;&lt;/mo&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mo&gt;&amp;#xA0;&lt;/mo&gt;&lt;mfenced&gt;&lt;mrow&gt;&lt;mi&gt;P&lt;/mi&gt;&lt;mi&gt;H&lt;/mi&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mo&gt;&amp;#xA0;&lt;/mo&gt;&lt;mo&gt;-&lt;/mo&gt;&lt;mo&gt;&amp;#xA0;&lt;/mo&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mi&gt;F&lt;/mi&gt;&lt;/mrow&gt;&lt;/mfenced&gt;&lt;mo&gt;&amp;#xA0;&lt;/mo&gt;&lt;mo&gt;&amp;#xF7;&lt;/mo&gt;&lt;mo&gt;&amp;#xA0;&lt;/mo&gt;&lt;mi&gt;N&lt;/mi&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mi&gt;F&lt;/mi&gt;&lt;/math&gt;" src="https://lh3.googleusercontent.com/_9yO_Qc6oLahLYvgLmvBM55ww_RQJoY2fMpurLfOpdv9IwvT_7PB2nSjhGUCy9f-6OwhA8WhHNOT4_-CBEr6mnQcvcJz7obfnC-0nrQewAYpS3or_idBLilIy0wVRvnJbsYrF2kv=s0" style="height:12px; width:253px" title="M T T F space equals space open parentheses P H R space minus space D T D T R F close parentheses space divided by space N R F" /></span></span></li>
</ul>

<p style="text-align:justify"><span style="font-size:14px"><span style="color:#000000">Where,</span></span></p>

<p style="text-align:justify"><span style="font-size:14px"><span style="color:#000000">PHR- Production Hours of a Robot</span></span></p>

<p style="text-align:justify"><span style="font-size:14px"><span style="color:#000000">DTDTRF- Downtime Due To Robot Failure in hours</span></span></p>

<p style="text-align:justify"><span style="font-size:14px"><span style="color:#000000">NRF- Number of Robot Failures&nbsp;</span></span></p>

<p style="text-align:justify"><span style="font-size:14px"><span style="color:#000000">The reliability of a robotic system is dependent on its ancillary units as well; the following are included when one wants to take into account the RELIABILITY of a cell:</span></span></p>

<ul>
	<li style="list-style-type:disc; text-align:justify"><span style="font-size:14px"><span style="color:#000000">Robotic Arm</span></span></li>
	<li style="list-style-type:disc; text-align:justify"><span style="font-size:14px"><span style="color:#000000">Controller</span></span></li>
	<li style="list-style-type:disc; text-align:justify"><span style="font-size:14px"><span style="color:#000000">Gripper and Tools</span></span></li>
	<li style="list-style-type:disc; text-align:justify"><span style="font-size:14px"><span style="color:#000000">Workstation with the workpieces in the robot working area</span></span></li>
	<li style="list-style-type:disc; text-align:justify"><span style="font-size:14px"><span style="color:#000000">Safety interlocks of the cell</span></span></li>
	<li style="list-style-type:disc; text-align:justify"><span style="font-size:14px"><span style="color:#000000">Human operator working on the cell</span></span></li>
</ul>

<p style="text-align:justify"><span style="font-size:14px"><strong><span style="color:#000000"><a href="https://edupmquestionhelp.s3.ap-south-1.amazonaws.com/hint/uploads/images/16300517781630051778.mp4">Click here to visualize the topic better</a></span></strong></span></p>