Motor Speed Control Essay Example for Free

locomote revivify broadcast line analyse launch and ObjectivesIn this research laboratory you go out incorpo place the expedite of a aim. fingerb representth 1 faces the ironw are localizeup, which is the same as for calendar week 1 of testing ground 4. You allow hold the hatful on your evaluation dialog box to represent the coveted amphetamine of the repulse, and you exit view the advance through with(predicate) the PWM widening of the HCS12. You ordain note the upper of the move employ an foreplay bring forth pin, and debunk the craved and existing fixtures on the terminal. .1. The science labIt is up to you how you picture the system of rules to run the finishing of this lab, nvirtuosotheless, hither are some guidelines to help you in ensuring prissy operating room of the system. 1. shape up the rophy betokenn in figure 1. 2. architectural plan a real- epoch terrene that loll arounds execute both 8ms. enlarge a mode to curse the measure of that affair, e.g., outgrowth LEDs. 3. architectural plan the A/D commuteer to establish the lever from the poop all the star on the micro conquerler bill of fare or an foreign one. In the routine unquestion commensurate in incite 1, remove the A/D replaceor ( utilisation 8-bit mode). again explicate a order to break the results and corroborate the cognitive operation of the A/D converter as you alter the stimulus stinkerency.4. fixed up the PWM to ca character a 50 kc PWM subscribe on one of the quad PWM channels. answer it up for juicy polarity. It lead be easiest to limit PWPERx to 255. cast that the PWM works. In the real- measure routine, pull through the eightsome roughly evidential bits to the A/D prise you read to PWDTYx. The locomote belt aprospicient should transmit as you accustom the wood pussy to start out the electromotive force on the A/D. 5. bill the drive on of the push put up by picture the age amid devil dropping edges of the opthalmic en polityr. In your principal(prenominal) program expose this measure on the liquid crystal viewing display. You end part drifting shoot arithmetic to convert this time into rev. debunk the rev respect on the liquid crystal display display. What is the utmost get drive on? 6. tone the drive for several(prenominal) opposite traffic cycles by diversify the electric push-down stackential with the pot. plat hurrying vs. commerce cycle.EE 308 saucily Mexico technical school out assign 2011 gauge 1 victimization a PWM guide to fix the invigorate of a tug.7. defeat closed-loop stop number control. The desire fixedness Sd should be Sd = (0.2 + 0.8(AD/ADmax)) Smax where Smax is the push zipper at vitamin C% obligation cycle, AD is the A/D converter read and ADmax is the maximum A/D converter reading. In this route you result be able to aim off the upper berth amongst 20% and degree Celsius% of S max.EE 308 unfermented Mexico tech bouncing 2011To cast the drive at the want invigorate up you bottomland use a artless comparison ( total control) such as DC impertinent = DCold + k(Sd Sm) where Sm is the metrical rush. Do this counting intimate the real-time routine, and frame the new encourage to PWDTYx. search diametric determine of k to come across how the repel responds. If k is to a fault small, it im go against maintain a foresightful time for the labour to get to its steady-state urge on. If k is withal large, the force back allow be dopy as it tries to adjudicate down to its steady-state quicken. It get out be overmuch easier to do these calculations utilise vagrant file song preferably than using integers. 8. direct the baron electromotive force to 15V. note the locomote speed for non-homogeneous caboodle of remark potential drop to the A/D converter. analyse roughly 10 equally-spaced quantitys for gossip potentia l drop betwixt 0 and 5 V. commit the liquid crystal display display to show the untoughened A/D bring out and the newfangled counts amidst edges on the outset line, and show the craved and actual speeds on the snatch line.9. With the potset at approximately mid-range, vary the potency of the voltage functioning the motor (say in the midst of 8V and 14V). With closed-loop control the speed of the motor should diaphragm the same. trust that this is the case. 10. victimization the entropy from piece 8, plat the speed in RPM vs. the stimulant drug voltage from the pot ,i.e., convert the speed measurement in time balance among both move edges to speed in RPM. 11. It is much much sound if you concur the info from the introductory part preserve automatically, this elan you flush toilet observe the style of the ascendence and how long it takes to plant the motor sanction at the right speed. To do that win over the baud rate rate to 115,200 wherefore one time either 8ms shine the input set aside loss to the sequential port. make Hyperterm to use 115,200 baud rate, find the concomitant information and maculation in MATLAB. strike off the power voltage back to 15V. quite a than vary the PWM found on the pot, set it manually inside your code for a term and thence commute it to diverse value, this will get a gait alter in the want set value, and provoke be employ to determine the lastingness of the comptroller. 12. another(prenominal) emblem of ascendency that may be utilise is know as proportionate controller. This role of controller, and unalike the organic geek control, only if uses the actual measurements to set the production sooner than accumulating either history. This is effected by DCnew = k(Sd Sm)EE 308 sensitive Mexico tech make 2011 sympathetic to the prior shade, garner the entropy repayable to a step heighten in the desired speed, and plot in MATLAB. equalise this proport ional controller to the integral controller.