Perhaps we should use this thread to discuss how to design a control system step-by-step. I’ll leave blank steps, so others can comment. I know I left some holes.
10. Determine a need for your idea. Students and other academic types may skip this step.
Have hot dogs already been invented?
Is there a better hot dog?
20. Learn about your process.
How are hot dogs made?
30. Learn about the equipment for producing your product.
Microwave, oven, or grill?
40. Find a target audience your product or process.
Can you sell the hot dogs to anyone?
Does someone need a better hot dog?
50. Develop specifications and system requirements.
Foot long? Bun length?
60. Select a basic set of hardware that will meet your specifications.
DCS, PLC, Batch controller, Migrant worker?
70. Decide on a budget. This may change your hardware choices.
80. Generate a basic IO list and process description (50-80% design). This may also change your hardware choices.
90. Find a buyer.
Who wants a hot dog?
100. Begin the engineering that you budgeted for earlier. Refine your IO list, create project drawings, finalize specifications (90-99% design).
110. Purchase equipment.
120. While waiting for delivery, begin writing program code (50-80%).
130. Build panels and/or machines.
140. Download the programs and do a shop test of IO and program. (90-99%)
150. Ship and install the equipment.
160. Perform on-site test of IO and program.
170. Do a final start-up and training.
180. Save copies of all your final results! (100%)
190. Get customer to sign off on the project.
200. Deliver as-built drawings and documents (100% design).
210. Hold true to your warranty!
AK
