Low voltage actuators are co-fired multilayer actuators. There are low voltage actuators, usually operating at up to 200 volts, and high voltage actuators operating at up to 1000 volts. Multilayer actuators are essentially many stacked layers of piezo material acting in concert. This is the basis for multilayer actuators. A stack of 2 piezo elements will have twice the movement at the same applied voltage as a single piezo element, and a stack of 3 piezo elements will exhibit 3 times the movement as a single element with the same applied voltage, etc. However, the amount of voltage that can be applied will depend on the material and the thickness of each element. Therefore, when one stacks piezo elements together, there is a multiplying effect on the amount of movement that is achieved. Please note that this movement does not depend on the dimensions of the piezo element. This piezoelectric coefficient, d33, is a figure of merit for the piezo material relating to the efficiency of the material in transferring the electrical energy to mechanical energy. The amount of movement that a piezo device can yield is equal to the amount of voltage applied times the d33 or the piezo electric coefficient. The amount of force that can be applied depends on the cross sectional area of the actuator. A piezo actuator will generate a linear displacement when an electric field is applied, and this displacement is also capable of applying a force, and therefore the actuator is capable of doing work. The latter is the inverse piezoelectric response and the response responsible for actuation.Īn actuator is essentially a motor, or a generator of motion, usually linear and limited in range. Piezo materials are materials that will generate an electric charge when they are deformed, or conversely, they will deform when electrically charged. amplifiers, electronic switches, other auxiliary apparatus available.custom design and engineering services available.Basic (planar face) and spherical endpieces available.discrete stack (150 V / 500 V / 1000 V maximum).bare piezo stacks / encased piezo stacks.large displacements - up to 0.15-0.20% of piezo stack height.In print, online and mobile device formats. Game-changing research and novel textile patents.Īll this from MCL News & Media – the fastest growing international textile publisher – which offers a unique insight into how today’s industry will look tomorrow.Expert advice on raw material selection and product stewardship.The inside track direct from journalists on the exhibition floor.Examples of industry best practice in action.Advice from experts on knitted fabric manufacturing.Social compliance in knitwear sourcing destinations.How new trade agreements will impact the knitting industry.Details on the most innovative fibre and yarn developments.Unique insight into thinking of knitting industry leaders.All about the latest knitting technology as it is launched.Exclusive discounts on all MCL publications.Weekly e-news round-up of key developments.
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