PID Controllers with DC Gear Motors.pdf

Search T: +44 (0) 1932 252 482 E: Home Haptic Feedback Vibration Motors Gear Motors Product Catalogue App. Notes Tech Blog About PMD Help Home Gear Motors DC Gear Motor Product Guides PID Controllers PID Controllers with DC Gearmotors A graph showing the overshoot and correction for positioning applications As a designer, you always have a challenge to ensure that your chosen DC gearmotor delivers optimum performance according to its technical specifications
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  Search  T: +44 (0) 1932 252 482E: enquiries@precisionmicrodrives.comHomeHaptic Feedback Vibration MotorsGear MotorsProduct CatalogueApp. NotesTech BlogAbout PMDHelpHomeGear MotorsDC Gear Motor Product GuidesPID Controllers PID Controllers with DC Gearmotors A graph showing the overshoot and correction for positioning applicationsAs a designer, you always have a challenge to ensure that your chosen DC gearmotor  delivers optimum performance according toits technical specifications. For a DC geared motor , the deviation from its optimum performance can happen for many reasons, suchis backlash. A PID (proportional integral derivative) controller, when working in conjunction with a DC gear motor, implements aclosed loop system and due to its ability to increase accuracy it has found wide acceptance in industrial,  positioning and consumer applications.Using a PID controller to improve the positioning performance of a DC gearmotor is a smart designer choice. A PID controller  provides a feedback mechanism for gear motor’s parameter, for example: the positioning accuracy. A designer, working on ageared motor application, finds lack of positioning accuracy due to backlash. Without any control system, the application getsreduced stability or becomes sluggish. How does a PID controller provide positioning accuracy? A PID controller implements a closed-loop control system. Output measurement is calibrated in order to control the input. In aclosed-loop control system, the following is defined:Close Or   der Cart View CartCancel  For your design requirements:Use the PID controller to regulate the gainConsider other factors in feedback to adjust the PID algorithmsThe PID controller opens up the possibility for changing the dynamics with a larger number of options. This helps the designer in practical applications. PID controllers are viewed as three terms: a proportional term, and integral term and a derivative term. Theseare added together. As a designer, use a PID controller that has well-tuned parameters for your application. Note : High acceleration or shock on the output gear shreds gear teeth. To prevent this, the designer can also use pre-gearhead(rear shaft) encoding feedback to improve positioning control. This control can be about 1 (one) revolution on the rear shift per degree of gearhead output. This ensures slow start and slow stop, avoiding high stress on one of the teeth.PID controllers improve positioning accuracy Subscribe to our Monthly Technical Support Bulletin, via Email Email Address * First Name * Last Name * Subscribe Keep Me UpdatedContact Us
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