Research On Design And Simulation Of EMD-based Electrical-mechanical Converter

Electrical-mechanical converter (EMC) device is one of the key driving components in electro-hydraulic proportional control. It converts the outside electrical signals into the external mechanical signal, based on the traditional industrial proportional solenoid. The device converts electrical energy into mechanical energy continuously, according to the input electric signal instructions. Compared with traditional linear motion device, the device has not only good dynamic and static working characteristics, but also a high precision control, without any conversion mechanism, displaying wide range of application prospects in high precision control and high frequency short stroke reciprocating linear motion field.In order to improve the moving coil linear motor (MCLM) in terms of output force, response time and response speed, in this paper, the converter device is studied using extension modular design (EMD) method. Firstly, extensible reasoning is performed on the design object. Mechanical products are transcribed using matter-elements, relation-elements and affair-elements, forming extension model of the problem; Secondly, coils group was split evenly and combined extension configuration model, using extensible analysis method; Finally, mathematical models of the coils and the EMC are established. Appropriate parameters are chosen to check them. EMC product family design is implemented by performing parametric modeling on the device model using the SolidWorks software. Then, reliability of the product model is verified. Main innovations of this paper are described as follows:1. In order to pursue the formalized description of function, structure and parts in the EMC product design, extensible analysis is adopted to establish the relation-element composition. Dominant and recessive basic-element formalized marks and transcribed converter model is proposed. This is beneficial to the decomposition, transformation and combinations of gene extension modules.2. Extracting the key characteristic elements from the basic-elements of the design object is proposed, and then extension transformations are performed on the dominant gene elements of the gene Extension modular model. Characteristic-element dependent function for EMC is established to fulfill comprehensive evaluation and achieve product family. Then it implements qualitative analysis-quantitative computing based dialectical extension configuration, completing personalized product family design.3. For the shortcoming of EMC in terms of output electromagnetic force, response time or response speed, the coils set of the proposed EMC is evenly split, transformed and then recombined. By this way, the response speed and output electromagnetic force are significantly improved.Finally, results of the output terminal simulation of the models and coils impedance test verify the feasibility of the proposed method.