improve_piezo_reliability
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improve_piezo_reliability [2016/09/07 18:12] – ↷ Page moved from documentation:improve_piezo_reliability to improve_piezo_reliability asiadmin | improve_piezo_reliability [2019/04/18 19:34] – external edit 127.0.0.1 | ||
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+ | ====== Improving Piezo based Stages/ | ||
+ | The Following Tech Note is a collection of tips and best practices when working with ASI's Piezos to maximize their lifetime and reliability. | ||
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+ | ===== Piezo ON Time and Life ===== | ||
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+ | Most Piezo manufactures spec there Piezo Life in Hours at Maximum Rated Voltage. In usage ASI Piezo rarely go up to the maximum rated voltage, however hours spent at any voltage will decrease the Piezo life. | ||
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+ | Applying extreme and/or static voltages to the piezo actuators for long periods can pre-maturely degrade performance and ultimately can lead to actuator failure, particularly in humid environments.((The piezo actuator is a stack of thin dielectric layers of piezoceramic material with alternating electrodes across which a voltage is applied (generally -20V to 120V). The main failure mechanism is electromigration of the electrode material through the piezoceramic leading to shorts. Electromigration is proportional to at least the square of the applied voltage and worsens with humidity. It is believed that fixed voltages are worse because self-heating during movement prevents the build-up of moisture. | ||
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+ | To maximize piezo lifetime they should to be turned off when not in use, or else apply only a small voltage across them. | ||
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+ | ===== Auto Sleep Timer ===== | ||
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+ | In MS2000/ | ||
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+ | In more detail: Every time the piezo is moved (via joystick/ | ||
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+ | By Default this timer is disabled except for SPIM-specific firmware. Users can set the time in minutes thru the [[commands: | ||
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+ | The auto-sleep function only works in internal input mode. In external input mode, 2 volts is a good input voltage to use when the piezos are resting for long periods. | ||
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+ | {{tag> |
Address: 29391 W Enid Rd. Eugene, OR 97402, USA | Phone: +1 (541) 461-8181
improve_piezo_reliability.txt · Last modified: 2021/09/23 17:15 by 127.0.0.1